diff options
Diffstat (limited to 'xlators/cluster/afr-v1/src/afr-self-heal-common.c')
| -rw-r--r-- | xlators/cluster/afr-v1/src/afr-self-heal-common.c | 2812 |
1 files changed, 2812 insertions, 0 deletions
diff --git a/xlators/cluster/afr-v1/src/afr-self-heal-common.c b/xlators/cluster/afr-v1/src/afr-self-heal-common.c new file mode 100644 index 000000000..ef92b4205 --- /dev/null +++ b/xlators/cluster/afr-v1/src/afr-self-heal-common.c @@ -0,0 +1,2812 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + +#include "glusterfs.h" +#include "xlator.h" +#include "byte-order.h" + +#include "afr.h" +#include "afr-transaction.h" +#include "afr-self-heal-common.h" +#include "afr-self-heal.h" +#include "pump.h" + +#define ADD_FMT_STRING(msg, off, sh_str, status, print_log) \ + do { \ + if (AFR_SELF_HEAL_NOT_ATTEMPTED != status) { \ + off += snprintf (msg + off, sizeof (msg) - off, \ + " "sh_str" self heal %s,", \ + get_sh_completion_status (status));\ + print_log = 1; \ + } \ + } while (0) + +#define ADD_FMT_STRING_SYNC(msg, off, sh_str, status, print_log) \ + do { \ + if (AFR_SELF_HEAL_SYNC_BEGIN == status || \ + AFR_SELF_HEAL_FAILED == status) { \ + off += snprintf (msg + off, sizeof (msg) - off, \ + " "sh_str" self heal %s,", \ + get_sh_completion_status (status));\ + print_log = 1; \ + } \ + } while (0) + + +void +afr_sh_reset (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + memset (sh->child_errno, 0, + sizeof (*sh->child_errno) * priv->child_count); + memset (sh->buf, 0, sizeof (*sh->buf) * priv->child_count); + memset (sh->parentbufs, 0, + sizeof (*sh->parentbufs) * priv->child_count); + memset (sh->success, 0, sizeof (*sh->success) * priv->child_count); + memset (sh->locked_nodes, 0, + sizeof (*sh->locked_nodes) * priv->child_count); + sh->active_sinks = 0; + + afr_reset_xattr (sh->xattr, priv->child_count); +} + +//Intersection[child]=1 if child is part of intersection +void +afr_children_intersection_get (int32_t *set1, int32_t *set2, + int *intersection, unsigned int child_count) +{ + int i = 0; + + memset (intersection, 0, sizeof (*intersection) * child_count); + for (i = 0; i < child_count; i++) { + intersection[i] = afr_is_child_present (set1, child_count, i) + && afr_is_child_present (set2, child_count, + i); + } +} + +/** + * select_source - select a source and return it + */ + +int +afr_sh_select_source (int sources[], int child_count) +{ + int i = 0; + for (i = 0; i < child_count; i++) + if (sources[i]) + return i; + + return -1; +} + +void +afr_sh_mark_source_sinks (call_frame_t *frame, xlator_t *this) +{ + int i = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int active_sinks = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + for (i = 0; i < priv->child_count; i++) { + if (sh->sources[i] == 0 && local->child_up[i] == 1) { + active_sinks++; + sh->success[i] = 1; + } else if (sh->sources[i] == 1 && local->child_up[i] == 1) { + sh->success[i] = 1; + } + } + sh->active_sinks = active_sinks; +} + +int +afr_sh_source_count (int sources[], int child_count) +{ + int i = 0; + int nsource = 0; + + for (i = 0; i < child_count; i++) + if (sources[i]) + nsource++; + return nsource; +} + +void +afr_sh_set_error (afr_self_heal_t *sh, int32_t op_errno) +{ + sh->op_ret = -1; + sh->op_errno = afr_most_important_error(sh->op_errno, op_errno, + _gf_false); +} + +void +afr_sh_print_pending_matrix (int32_t *pending_matrix[], xlator_t *this) +{ + afr_private_t * priv = this->private; + char *buf = NULL; + char *ptr = NULL; + int i = 0; + int j = 0; + + /* 10 digits per entry + 1 space + '[' and ']' */ + buf = GF_MALLOC (priv->child_count * 11 + 8, gf_afr_mt_char); + + for (i = 0; i < priv->child_count; i++) { + ptr = buf; + ptr += sprintf (ptr, "[ "); + for (j = 0; j < priv->child_count; j++) { + ptr += sprintf (ptr, "%d ", pending_matrix[i][j]); + } + sprintf (ptr, "]"); + gf_log (this->name, GF_LOG_DEBUG, "pending_matrix: %s", buf); + } + + GF_FREE (buf); +} + +char* +afr_get_pending_matrix_str (int32_t *pending_matrix[], xlator_t *this) +{ + afr_private_t * priv = this->private; + char *buf = NULL; + char *ptr = NULL; + int i = 0; + int j = 0; + int child_count = priv->child_count; + char *matrix_begin = "[ [ "; + char *matrix_end = "] ]"; + char *seperator = "] [ "; + int pending_entry_strlen = 12; //Including space after entry + int matrix_begin_strlen = 0; + int matrix_end_strlen = 0; + int seperator_strlen = 0; + int string_length = 0; + char *msg = "- Pending matrix: "; + + /* + * for a list of lists of [ [ a b ] [ c d ] ] + * */ + + matrix_begin_strlen = strlen (matrix_begin); + matrix_end_strlen = strlen (matrix_end); + seperator_strlen = strlen (seperator); + string_length = matrix_begin_strlen + matrix_end_strlen + + (child_count -1) * seperator_strlen + + (child_count * child_count * pending_entry_strlen); + + buf = GF_CALLOC (1, 1 + strlen (msg) + string_length , gf_afr_mt_char); + if (!buf) + goto out; + + ptr = buf; + ptr += sprintf (ptr, "%s", msg); + ptr += sprintf (ptr, "%s", matrix_begin); + for (i = 0; i < priv->child_count; i++) { + for (j = 0; j < priv->child_count; j++) { + ptr += sprintf (ptr, "%d ", pending_matrix[i][j]); + } + if (i < priv->child_count -1) + ptr += sprintf (ptr, "%s", seperator); + } + + ptr += sprintf (ptr, "%s", matrix_end); + +out: + return buf; +} + +void +afr_sh_print_split_brain_log (int32_t *pending_matrix[], xlator_t *this, + const char *loc) +{ + char *buf = NULL; + char *free_ptr = NULL; + + buf = afr_get_pending_matrix_str (pending_matrix, this); + if (buf) + free_ptr = buf; + else + buf = ""; + + + gf_log (this->name, GF_LOG_ERROR, "Unable to self-heal contents of '%s'" + " (possible split-brain). Please delete the file from all but " + "the preferred subvolume.%s", loc, buf); + GF_FREE (free_ptr); + return; +} + + +void +afr_init_pending_matrix (int32_t **pending_matrix, size_t child_count) +{ + int i = 0; + int j = 0; + + GF_ASSERT (pending_matrix); + + for (i = 0; i < child_count; i++) { + for (j = 0; j < child_count; j++) { + pending_matrix[i][j] = 0; + } + } +} + +void +afr_mark_ignorant_subvols_as_pending (int32_t **pending_matrix, + unsigned char *ignorant_subvols, + size_t child_count) +{ + int i = 0; + int j = 0; + + GF_ASSERT (pending_matrix); + GF_ASSERT (ignorant_subvols); + + for (i = 0; i < child_count; i++) { + if (ignorant_subvols[i]) { + for (j = 0; j < child_count; j++) { + if (!ignorant_subvols[j]) + pending_matrix[j][i] += 1; + } + } + } +} + +int +afr_build_pending_matrix (char **pending_key, int32_t **pending_matrix, + unsigned char *ignorant_subvols, + dict_t *xattr[], afr_transaction_type type, + size_t child_count) +{ + /* Indexable by result of afr_index_for_transaction_type(): 0 -- 2. */ + int32_t pending[3] = {0,}; + void *pending_raw = NULL; + int ret = -1; + int i = 0; + int j = 0; + int k = 0; + + afr_init_pending_matrix (pending_matrix, child_count); + + for (i = 0; i < child_count; i++) { + pending_raw = NULL; + + for (j = 0; j < child_count; j++) { + ret = dict_get_ptr (xattr[i], pending_key[j], + &pending_raw); + + if (ret != 0) { + /* + * There is no xattr present. This means this + * subvolume should be considered an 'ignorant' + * subvolume. + */ + + if (ignorant_subvols) + ignorant_subvols[i] = 1; + continue; + } + + memcpy (pending, pending_raw, sizeof(pending)); + k = afr_index_for_transaction_type (type); + + pending_matrix[i][j] = ntoh32 (pending[k]); + } + } + + return ret; +} + +typedef enum { + AFR_NODE_INVALID, + AFR_NODE_INNOCENT, + AFR_NODE_FOOL, + AFR_NODE_WISE, +} afr_node_type; + +typedef struct { + afr_node_type type; + int wisdom; +} afr_node_character; + + +static int +afr_sh_is_innocent (int32_t *array, int child_count) +{ + int i = 0; + int ret = 1; /* innocent until proven guilty */ + + for (i = 0; i < child_count; i++) { + if (array[i]) { + ret = 0; + break; + } + } + + return ret; +} + + +static int +afr_sh_is_fool (int32_t *array, int i, int child_count) +{ + return array[i]; /* fool if accuses itself */ +} + + +static int +afr_sh_is_wise (int32_t *array, int i, int child_count) +{ + return !array[i]; /* wise if does not accuse itself */ +} + + +static int +afr_sh_all_nodes_innocent (afr_node_character *characters, + int child_count) +{ + int i = 0; + int ret = 1; + + for (i = 0; i < child_count; i++) { + if (characters[i].type != AFR_NODE_INNOCENT) { + ret = 0; + break; + } + } + + return ret; +} + + +static int +afr_sh_wise_nodes_exist (afr_node_character *characters, int child_count) +{ + int i = 0; + int ret = 0; + + for (i = 0; i < child_count; i++) { + if (characters[i].type == AFR_NODE_WISE) { + ret = 1; + break; + } + } + + return ret; +} + + +/* + * The 'wisdom' of a wise node is 0 if any other wise node accuses it. + * It is 1 if no other wise node accuses it. + * Only wise nodes with wisdom 1 are sources. + * + * If no nodes with wisdom 1 exist, a split-brain has occurred. + */ + +static void +afr_sh_compute_wisdom (int32_t *pending_matrix[], + afr_node_character characters[], int child_count) +{ + int i = 0; + int j = 0; + + for (i = 0; i < child_count; i++) { + if (characters[i].type == AFR_NODE_WISE) { + characters[i].wisdom = 1; + + for (j = 0; j < child_count; j++) { + if ((characters[j].type == AFR_NODE_WISE) + && pending_matrix[j][i]) { + + characters[i].wisdom = 0; + } + } + } + } +} + + +static int +afr_sh_wise_nodes_conflict (afr_node_character *characters, + int child_count) +{ + int i = 0; + int ret = 1; + + for (i = 0; i < child_count; i++) { + if ((characters[i].type == AFR_NODE_WISE) + && characters[i].wisdom == 1) { + + /* There is atleast one bona-fide wise node */ + ret = 0; + break; + } + } + + return ret; +} + + +static int +afr_sh_mark_wisest_as_sources (int sources[], + afr_node_character *characters, + int child_count) +{ + int nsources = 0; + int i = 0; + + for (i = 0; i < child_count; i++) { + if (characters[i].wisdom == 1) { + sources[i] = 1; + nsources++; + } + } + + return nsources; +} + +static void +afr_compute_witness_of_fools (int32_t *witnesses, int32_t **pending_matrix, + afr_node_character *characters, + int32_t child_count) +{ + int i = 0; + int j = 0; + int witness = 0; + + GF_ASSERT (witnesses); + GF_ASSERT (pending_matrix); + GF_ASSERT (characters); + GF_ASSERT (child_count > 0); + + for (i = 0; i < child_count; i++) { + if (characters[i].type != AFR_NODE_FOOL) + continue; + + witness = 0; + for (j = 0; j < child_count; j++) { + if (i == j) + continue; + witness += pending_matrix[i][j]; + } + witnesses[i] = witness; + } +} + +static int32_t +afr_find_biggest_witness_among_fools (int32_t *witnesses, + afr_node_character *characters, + int32_t child_count) +{ + int i = 0; + int biggest_witness = -1; + int biggest_witness_idx = -1; + int biggest_witness_cnt = -1; + + GF_ASSERT (witnesses); + GF_ASSERT (characters); + GF_ASSERT (child_count > 0); + + for (i = 0; i < child_count; i++) { + if (characters[i].type != AFR_NODE_FOOL) + continue; + + if (biggest_witness < witnesses[i]) { + biggest_witness = witnesses[i]; + biggest_witness_idx = i; + biggest_witness_cnt = 1; + continue; + } + + if (biggest_witness == witnesses[i]) + biggest_witness_cnt++; + } + + if (biggest_witness_cnt != 1) + return -1; + + return biggest_witness_idx; +} + +int +afr_mark_fool_as_source_by_witness (int32_t *sources, int32_t *witnesses, + afr_node_character *characters, + int32_t child_count, int32_t witness) +{ + int i = 0; + int nsources = 0; + + GF_ASSERT (sources); + GF_ASSERT (witnesses); + GF_ASSERT (characters); + GF_ASSERT (child_count > 0); + + for (i = 0; i < child_count; i++) { + if (characters[i].type != AFR_NODE_FOOL) + continue; + + if (witness == witnesses[i]) { + sources[i] = 1; + nsources++; + } + } + return nsources; +} + + +int +afr_mark_fool_as_source_by_idx (int32_t *sources, int child_count, int idx) +{ + if (idx >= 0 && idx < child_count) { + sources[idx] = 1; + return 1; + } + return 0; +} + + +static int +afr_find_largest_file_size (struct iatt *bufs, int32_t *success_children, + int child_count) +{ + int idx = -1; + int i = -1; + int child = -1; + uint64_t max_size = 0; + uint64_t min_size = 0; + int num_children = 0; + + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + + child = success_children[i]; + if (bufs[child].ia_size > max_size) { + max_size = bufs[child].ia_size; + idx = child; + } + + if ((num_children == 0) || (bufs[child].ia_size < min_size)) { + min_size = bufs[child].ia_size; + } + + num_children++; + } + + /* If sizes are same for all of them, finding sources will have to + * happen with pending changelog. So return -1 + */ + if ((num_children > 1) && (min_size == max_size)) + return -1; + return idx; +} + + +static int +afr_find_newest_file (struct iatt *bufs, int32_t *success_children, + int child_count) +{ + int idx = -1; + int i = -1; + int child = -1; + uint64_t max_ctime = 0; + + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + + child = success_children[i]; + if (bufs[child].ia_ctime > max_ctime) { + max_ctime = bufs[child].ia_ctime; + idx = child; + } + } + + return idx; +} + + +static int +afr_mark_biggest_of_fools_as_source (int32_t *sources, int32_t **pending_matrix, + afr_node_character *characters, + int32_t *success_children, + int child_count, struct iatt *bufs) +{ + int32_t biggest_witness = 0; + int nsources = 0; + int32_t *witnesses = NULL; + + GF_ASSERT (child_count > 0); + + biggest_witness = afr_find_largest_file_size (bufs, success_children, + child_count); + if (biggest_witness != -1) + goto found; + + witnesses = GF_CALLOC (child_count, sizeof (*witnesses), + gf_afr_mt_int32_t); + if (NULL == witnesses) { + nsources = -1; + goto out; + } + + afr_compute_witness_of_fools (witnesses, pending_matrix, characters, + child_count); + biggest_witness = afr_find_biggest_witness_among_fools (witnesses, + characters, + child_count); + if (biggest_witness != -1) + goto found; + + biggest_witness = afr_find_newest_file (bufs, success_children, + child_count); + +found: + nsources = afr_mark_fool_as_source_by_idx (sources, child_count, + biggest_witness); +out: + GF_FREE (witnesses); + return nsources; +} + +int +afr_mark_child_as_source_by_uid (int32_t *sources, struct iatt *bufs, + int32_t *success_children, + unsigned int child_count, uint32_t uid) +{ + int i = 0; + int nsources = 0; + int child = 0; + + for (i = 0; i < child_count; i++) { + if (-1 == success_children[i]) + break; + + child = success_children[i]; + if (uid == bufs[child].ia_uid) { + sources[child] = 1; + nsources++; + } + } + return nsources; +} + +int +afr_get_child_with_lowest_uid (struct iatt *bufs, int32_t *success_children, + unsigned int child_count) +{ + int i = 0; + int smallest = -1; + int child = 0; + + for (i = 0; i < child_count; i++) { + if (-1 == success_children[i]) + break; + child = success_children[i]; + if ((smallest == -1) || + (bufs[child].ia_uid < bufs[smallest].ia_uid)) { + smallest = child; + } + } + return smallest; +} + +static int +afr_sh_mark_lowest_uid_as_source (struct iatt *bufs, int32_t *success_children, + int child_count, int32_t *sources) +{ + int nsources = 0; + int smallest = 0; + + smallest = afr_get_child_with_lowest_uid (bufs, success_children, + child_count); + if (smallest < 0) { + nsources = -1; + goto out; + } + nsources = afr_mark_child_as_source_by_uid (sources, bufs, + success_children, child_count, + bufs[smallest].ia_uid); +out: + return nsources; +} + +int +afr_get_no_xattr_dir_read_child (xlator_t *this, int32_t *success_children, + struct iatt *bufs) +{ + afr_private_t *priv = NULL; + int i = 0; + int child = -1; + int read_child = -1; + + priv = this->private; + for (i = 0; i < priv->child_count; i++) { + child = success_children[i]; + if (child < 0) + break; + if (read_child < 0) + read_child = child; + else if (bufs[read_child].ia_size < bufs[child].ia_size) + read_child = child; + } + return read_child; +} + +int +afr_sh_mark_zero_size_file_as_sink (struct iatt *bufs, int32_t *success_children, + int child_count, int32_t *sources) +{ + int nsources = 0; + int i = 0; + int child = 0; + gf_boolean_t sink_exists = _gf_false; + gf_boolean_t source_exists = _gf_false; + int source = -1; + + for (i = 0; i < child_count; i++) { + child = success_children[i]; + if (child < 0) + break; + if (!bufs[child].ia_size) { + sink_exists = _gf_true; + continue; + } + if (!source_exists) { + source_exists = _gf_true; + source = child; + continue; + } + if (bufs[source].ia_size != bufs[child].ia_size) { + nsources = -1; + goto out; + } + } + if (!source_exists && !sink_exists) { + nsources = -1; + goto out; + } + + if (!source_exists || !sink_exists) + goto out; + + for (i = 0; i < child_count; i++) { + child = success_children[i]; + if (child < 0) + break; + if (bufs[child].ia_size) { + sources[child] = 1; + nsources++; + } + } +out: + return nsources; +} + +char * +afr_get_character_str (afr_node_type type) +{ + char *character = NULL; + + switch (type) { + case AFR_NODE_INNOCENT: + character = "innocent"; + break; + case AFR_NODE_FOOL: + character = "fool"; + break; + case AFR_NODE_WISE: + character = "wise"; + break; + default: + character = "invalid"; + break; + } + return character; +} + +afr_node_type +afr_find_child_character_type (int32_t *pending_row, int32_t child, + unsigned int child_count) +{ + afr_node_type type = AFR_NODE_INVALID; + + GF_ASSERT ((child >= 0) && (child < child_count)); + + if (afr_sh_is_innocent (pending_row, child_count)) + type = AFR_NODE_INNOCENT; + else if (afr_sh_is_fool (pending_row, child, child_count)) + type = AFR_NODE_FOOL; + else if (afr_sh_is_wise (pending_row, child, child_count)) + type = AFR_NODE_WISE; + return type; +} + +int +afr_build_sources (xlator_t *this, dict_t **xattr, struct iatt *bufs, + int32_t **pending_matrix, int32_t *sources, + int32_t *success_children, afr_transaction_type type, + int32_t *subvol_status, gf_boolean_t ignore_ignorant) +{ + afr_private_t *priv = NULL; + afr_self_heal_type sh_type = AFR_SELF_HEAL_INVALID; + int nsources = -1; + unsigned char *ignorant_subvols = NULL; + unsigned int child_count = 0; + + priv = this->private; + child_count = priv->child_count; + + if (afr_get_children_count (success_children, priv->child_count) == 0) + goto out; + + if (!ignore_ignorant) { + ignorant_subvols = GF_CALLOC (sizeof (*ignorant_subvols), + child_count, gf_afr_mt_char); + if (NULL == ignorant_subvols) + goto out; + } + + afr_build_pending_matrix (priv->pending_key, pending_matrix, + ignorant_subvols, xattr, type, + priv->child_count); + + if (!ignore_ignorant) + afr_mark_ignorant_subvols_as_pending (pending_matrix, + ignorant_subvols, + priv->child_count); + sh_type = afr_self_heal_type_for_transaction (type); + if (AFR_SELF_HEAL_INVALID == sh_type) + goto out; + + afr_sh_print_pending_matrix (pending_matrix, this); + + nsources = afr_mark_sources (this, sources, pending_matrix, bufs, + sh_type, success_children, subvol_status); +out: + GF_FREE (ignorant_subvols); + return nsources; +} + +void +afr_find_character_types (afr_node_character *characters, + int32_t **pending_matrix, int32_t *success_children, + unsigned int child_count) +{ + afr_node_type type = AFR_NODE_INVALID; + int child = 0; + int i = 0; + + for (i = 0; i < child_count; i++) { + child = success_children[i]; + if (child == -1) + break; + type = afr_find_child_character_type (pending_matrix[child], + child, child_count); + characters[child].type = type; + } +} + +void +afr_mark_success_children_sources (int32_t *sources, int32_t *success_children, + unsigned int child_count) +{ + int i = 0; + for (i = 0; i < child_count; i++) { + if (success_children[i] == -1) + break; + sources[success_children[i]] = 1; + } +} +/** + * mark_sources: Mark all 'source' nodes and return number of source + * nodes found + * + * A node (a row in the pending matrix) belongs to one of + * three categories: + * + * M is the pending matrix. + * + * 'innocent' - M[i] is all zeroes + * 'fool' - M[i] has i'th element = 1 (self-reference) + * 'wise' - M[i] has i'th element = 0, others are 1 or 0. + * + * All 'innocent' nodes are sinks. If all nodes are innocent, no self-heal is + * needed. + * + * A 'wise' node can be a source. If two 'wise' nodes conflict, it is + * a split-brain. If one wise node refers to the other but the other doesn't + * refer back, the referrer is a source. + * + * All fools are sinks, unless there are no 'wise' nodes. In that case, + * one of the fools is made a source. + */ + +int +afr_mark_sources (xlator_t *this, int32_t *sources, int32_t **pending_matrix, + struct iatt *bufs, afr_self_heal_type type, + int32_t *success_children, int32_t *subvol_status) +{ + /* stores the 'characters' (innocent, fool, wise) of the nodes */ + afr_node_character *characters = NULL; + int nsources = -1; + unsigned int child_count = 0; + afr_private_t *priv = NULL; + + priv = this->private; + child_count = priv->child_count; + characters = GF_CALLOC (sizeof (afr_node_character), + child_count, gf_afr_mt_afr_node_character); + if (!characters) + goto out; + + this = THIS; + + /* start clean */ + memset (sources, 0, sizeof (*sources) * child_count); + nsources = 0; + afr_find_character_types (characters, pending_matrix, success_children, + child_count); + if (afr_sh_all_nodes_innocent (characters, child_count)) { + switch (type) { + case AFR_SELF_HEAL_METADATA: + nsources = afr_sh_mark_lowest_uid_as_source (bufs, + success_children, + child_count, + sources); + break; + case AFR_SELF_HEAL_DATA: + nsources = afr_sh_mark_zero_size_file_as_sink (bufs, + success_children, + child_count, + sources); + if ((nsources < 0) && subvol_status) + *subvol_status |= SPLIT_BRAIN; + break; + default: + break; + } + goto out; + } + + if (afr_sh_wise_nodes_exist (characters, child_count)) { + afr_sh_compute_wisdom (pending_matrix, characters, child_count); + + if (afr_sh_wise_nodes_conflict (characters, child_count)) { + if (subvol_status) + *subvol_status |= SPLIT_BRAIN; + nsources = -1; + } else { + nsources = afr_sh_mark_wisest_as_sources (sources, + characters, + child_count); + } + } else { + if (subvol_status) + *subvol_status |= ALL_FOOLS; + nsources = afr_mark_biggest_of_fools_as_source (sources, + pending_matrix, + characters, + success_children, + child_count, bufs); + } + +out: + if (nsources == 0) + afr_mark_success_children_sources (sources, success_children, + child_count); + GF_FREE (characters); + + gf_log (this->name, GF_LOG_DEBUG, "Number of sources: %d", nsources); + return nsources; +} + +void +afr_sh_pending_to_delta (afr_private_t *priv, dict_t **xattr, + int32_t *delta_matrix[], unsigned char success[], + int child_count, afr_transaction_type type) +{ + int tgt = 0; + int src = 0; + int value = 0; + + afr_build_pending_matrix (priv->pending_key, delta_matrix, NULL, + xattr, type, priv->child_count); + + /* + * The algorithm here has two parts. First, for each subvol indexed + * as tgt, we try to figure out what count everyone should have for it. + * If the self-heal succeeded, that's easy; the value is zero. + * Otherwise, the value is the maximum of the succeeding nodes' counts. + * Once we know the value, we loop through (possibly for a second time) + * setting each count to the difference so that when we're done all + * succeeding nodes will have the same count for tgt. + */ + for (tgt = 0; tgt < priv->child_count; ++tgt) { + value = 0; + if (!success[tgt]) { + /* Find the maximum. */ + for (src = 0; src < priv->child_count; ++src) { + if (!success[src]) { + continue; + } + if (delta_matrix[src][tgt] > value) { + value = delta_matrix[src][tgt]; + } + } + } + /* Force everyone who succeeded to the chosen value. */ + for (src = 0; src < priv->child_count; ++src) { + if (success[src]) { + delta_matrix[src][tgt] = value + - delta_matrix[src][tgt]; + } + else { + delta_matrix[src][tgt] = 0; + } + } + } +} + + +int +afr_sh_delta_to_xattr (xlator_t *this, + int32_t *delta_matrix[], dict_t *xattr[], + int child_count, afr_transaction_type type) +{ + int i = 0; + int j = 0; + int k = 0; + int ret = 0; + int32_t *pending = NULL; + int32_t *local_pending = NULL; + afr_private_t *priv = NULL; + + priv = this->private; + for (i = 0; i < child_count; i++) { + if (!xattr[i]) + continue; + + local_pending = NULL; + for (j = 0; j < child_count; j++) { + pending = GF_CALLOC (sizeof (int32_t), 3, + gf_afr_mt_int32_t); + + if (!pending) { + gf_log (this->name, GF_LOG_ERROR, + "failed to allocate pending entry " + "for %s[%d] on %s", + priv->pending_key[j], type, + priv->children[i]->name); + continue; + } + /* 3 = data+metadata+entry */ + + k = afr_index_for_transaction_type (type); + + pending[k] = hton32 (delta_matrix[i][j]); + + if (j == i) { + local_pending = pending; + continue; + } + ret = dict_set_bin (xattr[i], priv->pending_key[j], + pending, + AFR_NUM_CHANGE_LOGS * sizeof (int32_t)); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "Unable to set dict value."); + GF_FREE (pending); + } + } + if (local_pending) { + ret = dict_set_bin (xattr[i], priv->pending_key[i], + local_pending, + AFR_NUM_CHANGE_LOGS * sizeof (int32_t)); + if (ret < 0) { + gf_log (this->name, GF_LOG_WARNING, + "Unable to set dict value."); + GF_FREE (local_pending); + } + } + } + return 0; +} + + +int +afr_sh_missing_entries_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + + afr_sh_reset (frame, this); + + if (local->unhealable) { + gf_log (this->name, GF_LOG_DEBUG, + "split brain found, aborting selfheal of %s", + local->loc.path); + } + + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + sh->completion_cbk (frame, this); + } else { + gf_log (this->name, GF_LOG_TRACE, + "proceeding to metadata check on %s", + local->loc.path); + afr_self_heal_metadata (frame, this); + } + + return 0; +} + + +static int +afr_sh_missing_entries_finish (call_frame_t *frame, xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + + int_lock->lock_cbk = afr_sh_missing_entries_done; + afr_unlock (frame, this); + + return 0; +} + +int +afr_sh_common_create (afr_self_heal_t *sh, unsigned int child_count) +{ + int ret = -ENOMEM; + sh->buf = GF_CALLOC (child_count, sizeof (*sh->buf), + gf_afr_mt_iatt); + if (!sh->buf) + goto out; + sh->parentbufs = GF_CALLOC (child_count, sizeof (*sh->parentbufs), + gf_afr_mt_iatt); + if (!sh->parentbufs) + goto out; + sh->child_errno = GF_CALLOC (child_count, sizeof (*sh->child_errno), + gf_afr_mt_int); + if (!sh->child_errno) + goto out; + sh->success_children = afr_children_create (child_count); + if (!sh->success_children) + goto out; + sh->fresh_children = afr_children_create (child_count); + if (!sh->fresh_children) + goto out; + sh->xattr = GF_CALLOC (child_count, sizeof (*sh->xattr), + gf_afr_mt_dict_t); + if (!sh->xattr) + goto out; + ret = 0; +out: + return ret; +} + +void +afr_sh_common_lookup_resp_handler (call_frame_t *frame, void *cookie, + xlator_t *this, + int32_t op_ret, int32_t op_errno, + inode_t *inode, struct iatt *buf, + dict_t *xattr, struct iatt *postparent, + loc_t *loc) +{ + int child_index = 0; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + priv = this->private; + sh = &local->self_heal; + child_index = (long) cookie; + + LOCK (&frame->lock); + { + if (op_ret == 0) { + sh->buf[child_index] = *buf; + sh->parentbufs[child_index] = *postparent; + sh->success_children[sh->success_count] = child_index; + sh->success_count++; + sh->xattr[child_index] = dict_ref (xattr); + } else { + gf_log (this->name, GF_LOG_DEBUG, "path %s on subvolume" + " %s => -1 (%s)", loc->path, + priv->children[child_index]->name, + strerror (op_errno)); + local->self_heal.child_errno[child_index] = op_errno; + } + } + UNLOCK (&frame->lock); + return; +} + +gf_boolean_t +afr_valid_ia_type (ia_type_t ia_type) +{ + switch (ia_type) { + case IA_IFSOCK: + case IA_IFREG: + case IA_IFBLK: + case IA_IFCHR: + case IA_IFIFO: + case IA_IFLNK: + case IA_IFDIR: + return _gf_true; + default: + return _gf_false; + } + return _gf_false; +} + +int +afr_impunge_frame_create (call_frame_t *frame, xlator_t *this, + int active_source, call_frame_t **impunge_frame) +{ + afr_local_t *local = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *impunge_sh = NULL; + int32_t op_errno = 0; + afr_private_t *priv = NULL; + int ret = 0; + call_frame_t *new_frame = NULL; + + op_errno = ENOMEM; + priv = this->private; + new_frame = copy_frame (frame); + if (!new_frame) { + goto out; + } + + AFR_LOCAL_ALLOC_OR_GOTO (impunge_local, out); + + local = frame->local; + new_frame->local = impunge_local; + impunge_sh = &impunge_local->self_heal; + impunge_sh->sh_frame = frame; + impunge_sh->active_source = active_source; + impunge_local->child_up = memdup (local->child_up, + sizeof (*local->child_up) * + priv->child_count); + if (!impunge_local->child_up) + goto out; + + impunge_local->pending = afr_matrix_create (priv->child_count, + AFR_NUM_CHANGE_LOGS); + if (!impunge_local->pending) + goto out; + + ret = afr_sh_common_create (impunge_sh, priv->child_count); + if (ret) { + op_errno = -ret; + goto out; + } + op_errno = 0; + *impunge_frame = new_frame; +out: + if (op_errno && new_frame) + AFR_STACK_DESTROY (new_frame); + return -op_errno; +} + +void +afr_sh_missing_entry_call_impunge_recreate (call_frame_t *frame, xlator_t *this, + struct iatt *buf, + struct iatt *postparent, + afr_impunge_done_cbk_t impunge_done) +{ + call_frame_t *impunge_frame = NULL; + afr_local_t *local = NULL; + afr_local_t *impunge_local = NULL; + afr_self_heal_t *sh = NULL; + afr_self_heal_t *impunge_sh = NULL; + int ret = 0; + unsigned int enoent_count = 0; + afr_private_t *priv = NULL; + int i = 0; + int32_t op_errno = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + enoent_count = afr_errno_count (NULL, sh->child_errno, + priv->child_count, ENOENT); + if (!enoent_count) { + gf_log (this->name, GF_LOG_INFO, + "no missing files - %s. proceeding to metadata check", + local->loc.path); + goto out; + } + sh->impunge_done = impunge_done; + ret = afr_impunge_frame_create (frame, this, sh->source, &impunge_frame); + if (ret) + goto out; + impunge_local = impunge_frame->local; + impunge_sh = &impunge_local->self_heal; + loc_copy (&impunge_local->loc, &local->loc); + ret = afr_build_parent_loc (&impunge_sh->parent_loc, + &impunge_local->loc, &op_errno); + if (ret) { + ret = -op_errno; + goto out; + } + impunge_local->call_count = enoent_count; + impunge_sh->entrybuf = sh->buf[sh->source]; + impunge_sh->parentbuf = sh->parentbufs[sh->source]; + for (i = 0; i < priv->child_count; i++) { + if (!impunge_local->child_up[i]) { + impunge_sh->child_errno[i] = ENOTCONN; + continue; + } + if (sh->child_errno[i] != ENOENT) { + impunge_sh->child_errno[i] = EEXIST; + continue; + } + } + for (i = 0; i < priv->child_count; i++) { + if (sh->child_errno[i] != ENOENT) + continue; + afr_sh_entry_impunge_create (impunge_frame, this, i); + enoent_count--; + } + GF_ASSERT (!enoent_count); + return; +out: + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "impunge of %s failed, " + "reason: %s", local->loc.path, strerror (-ret)); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } + afr_sh_missing_entries_finish (frame, this); +} + +int +afr_sh_create_entry_cbk (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + if (op_ret < 0) + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_missing_entries_finish (frame, this); + return 0; +} + +static int +sh_missing_entries_create (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + int type = 0; + struct iatt *buf = NULL; + struct iatt *postparent = NULL; + + local = frame->local; + sh = &local->self_heal; + + buf = &sh->buf[sh->source]; + postparent = &sh->parentbufs[sh->source]; + + type = buf->ia_type; + if (!afr_valid_ia_type (type)) { + gf_log (this->name, GF_LOG_ERROR, + "%s: unknown file type: 0%o", local->loc.path, type); + afr_set_local_for_unhealable (local); + afr_sh_missing_entries_finish (frame, this); + goto out; + } + + afr_sh_missing_entry_call_impunge_recreate (frame, this, + buf, postparent, + afr_sh_create_entry_cbk); +out: + return 0; +} + +void +afr_sh_missing_entries_lookup_done (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + ia_type_t ia_type = IA_INVAL; + int32_t nsources = 0; + loc_t *loc = NULL; + int32_t subvol_status = 0; + afr_transaction_type txn_type = AFR_DATA_TRANSACTION; + gf_boolean_t split_brain = _gf_false; + int read_child = -1; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + loc = &local->loc; + + if (op_ret < 0) { + if (op_errno == EIO) { + afr_set_local_for_unhealable (local); + } + // EIO can happen if finding the fresh parent dir failed + goto out; + } + + //now No chance for the ia_type to conflict + ia_type = sh->buf[sh->success_children[0]].ia_type; + txn_type = afr_transaction_type_get (ia_type); + nsources = afr_build_sources (this, sh->xattr, sh->buf, + sh->pending_matrix, sh->sources, + sh->success_children, txn_type, + &subvol_status, _gf_false); + if (nsources < 0) { + gf_log (this->name, GF_LOG_INFO, "No sources for dir of %s," + " in missing entry self-heal, continuing with the rest" + " of the self-heals", local->loc.path); + if (subvol_status & SPLIT_BRAIN) { + split_brain = _gf_true; + switch (txn_type) { + case AFR_DATA_TRANSACTION: + nsources = 1; + sh->sources[sh->success_children[0]] = 1; + break; + case AFR_ENTRY_TRANSACTION: + read_child = afr_get_no_xattr_dir_read_child + (this, + sh->success_children, + sh->buf); + sh->sources[read_child] = 1; + nsources = 1; + break; + default: + op_errno = EIO; + goto out; + } + } else { + op_errno = EIO; + goto out; + } + } + + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_children, priv->child_count); + sh->source = sh->fresh_children[0]; + if (sh->source == -1) { + gf_log (this->name, GF_LOG_DEBUG, "No active sources found."); + op_errno = EIO; + goto out; + } + + if (sh->gfid_sh_success_cbk) + sh->gfid_sh_success_cbk (frame, this); + sh->type = sh->buf[sh->source].ia_type; + if (uuid_is_null (loc->inode->gfid)) + uuid_copy (loc->gfid, sh->buf[sh->source].ia_gfid); + if (split_brain) { + afr_sh_missing_entries_finish (frame, this); + } else { + sh_missing_entries_create (frame, this); + } + return; +out: + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_set_error (sh, op_errno); + afr_sh_missing_entries_finish (frame, this); + return; +} + +static int +afr_sh_common_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, dict_t *xattr, + struct iatt *postparent) +{ + int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + afr_sh_common_lookup_resp_handler (frame, cookie, this, op_ret, + op_errno, inode, buf, xattr, + postparent, &sh->lookup_loc); + call_count = afr_frame_return (frame); + + if (call_count) + goto out; + op_ret = -1; + if (!sh->success_count) { + op_errno = afr_resultant_errno_get (NULL, sh->child_errno, + priv->child_count); + gf_log (this->name, GF_LOG_ERROR, "Failed to lookup %s, " + "reason %s", sh->lookup_loc.path, + strerror (op_errno)); + goto done; + } + + if ((sh->lookup_flags & AFR_LOOKUP_FAIL_CONFLICTS) && + (afr_conflicting_iattrs (sh->buf, sh->success_children, + priv->child_count, + sh->lookup_loc.path, this->name))) { + op_errno = EIO; + gf_log (this->name, GF_LOG_ERROR, "Conflicting entries " + "for %s", sh->lookup_loc.path); + goto done; + } + + if ((sh->lookup_flags & AFR_LOOKUP_FAIL_MISSING_GFIDS) && + (afr_gfid_missing_count (this->name, sh->success_children, + sh->buf, priv->child_count, + sh->lookup_loc.path))) { + op_errno = ENODATA; + gf_log (this->name, GF_LOG_ERROR, "Missing Gfids " + "for %s", sh->lookup_loc.path); + goto done; + } + op_ret = 0; + +done: + sh->lookup_done (frame, this, op_ret, op_errno); +out: + return 0; +} + +int +afr_sh_remove_entry_cbk (call_frame_t *frame, xlator_t *this, int child, + int32_t op_ret, int32_t op_errno) +{ + int call_count = 0; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + + GF_ASSERT (sh->post_remove_call); + if ((op_ret == -1) && (op_errno != ENOENT)) { + gf_log (this->name, GF_LOG_ERROR, + "purge entry %s failed, on child %d reason, %s", + local->loc.path, child, strerror (op_errno)); + LOCK (&frame->lock); + { + afr_sh_set_error (sh, EIO); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + } + UNLOCK (&frame->lock); + } + call_count = afr_frame_return (frame); + if (call_count == 0) + sh->post_remove_call (frame, this); + return 0; +} + +void +afr_sh_call_entry_expunge_remove (call_frame_t *frame, xlator_t *this, + int child_index, struct iatt *buf, + struct iatt *parentbuf, + afr_expunge_done_cbk_t expunge_done) +{ + call_frame_t *expunge_frame = NULL; + afr_local_t *local = NULL; + afr_local_t *expunge_local = NULL; + afr_self_heal_t *sh = NULL; + afr_self_heal_t *expunge_sh = NULL; + int32_t op_errno = 0; + int ret = 0; + + expunge_frame = copy_frame (frame); + if (!expunge_frame) { + goto out; + } + + AFR_LOCAL_ALLOC_OR_GOTO (expunge_local, out); + + local = frame->local; + sh = &local->self_heal; + expunge_frame->local = expunge_local; + expunge_sh = &expunge_local->self_heal; + expunge_sh->sh_frame = frame; + loc_copy (&expunge_local->loc, &local->loc); + ret = afr_build_parent_loc (&expunge_sh->parent_loc, + &expunge_local->loc, &op_errno); + if (ret) { + ret = -op_errno; + goto out; + } + sh->expunge_done = expunge_done; + afr_sh_entry_expunge_remove (expunge_frame, this, child_index, buf, + parentbuf); + return; +out: + gf_log (this->name, GF_LOG_ERROR, "Expunge of %s failed, reason: %s", + local->loc.path, strerror (op_errno)); + expunge_done (frame, this, child_index, -1, op_errno); +} + +void +afr_sh_remove_stale_lookup_info (afr_self_heal_t *sh, int32_t *success_children, + int32_t *fresh_children, + unsigned int child_count) +{ + int i = 0; + + for (i = 0; i < child_count; i++) { + if (afr_is_child_present (success_children, child_count, i) && + !afr_is_child_present (fresh_children, child_count, i)) { + sh->child_errno[i] = ENOENT; + GF_ASSERT (sh->xattr[i]); + dict_unref (sh->xattr[i]); + sh->xattr[i] = NULL; + } + } +} + +int +afr_sh_purge_stale_entries_done (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (is_self_heal_failed (sh, AFR_CHECK_SPECIFIC)) { + afr_sh_missing_entries_finish (frame, this); + } else { + if (afr_gfid_missing_count (this->name, sh->fresh_children, + sh->buf, priv->child_count, + local->loc.path)) { + afr_sh_common_lookup (frame, this, &local->loc, + afr_sh_missing_entries_lookup_done, + sh->sh_gfid_req, + AFR_LOOKUP_FAIL_CONFLICTS| + AFR_LOOKUP_FAIL_MISSING_GFIDS, + NULL); + } else { + //No need to set gfid so goto missing entries lookup done + //Behave as if you have done the lookup + afr_sh_remove_stale_lookup_info (sh, + sh->success_children, + sh->fresh_children, + priv->child_count); + afr_children_copy (sh->success_children, + sh->fresh_children, + priv->child_count); + afr_sh_missing_entries_lookup_done (frame, this, 0, 0); + } + } + return 0; +} + +gf_boolean_t +afr_sh_purge_entry_condition (afr_local_t *local, afr_private_t *priv, + int child) +{ + afr_self_heal_t *sh = NULL; + + sh = &local->self_heal; + + if (local->child_up[child] && + (!afr_is_child_present (sh->fresh_parent_dirs, priv->child_count, + child)) + && (sh->child_errno[child] != ENOENT)) + return _gf_true; + + return _gf_false; +} + +gf_boolean_t +afr_sh_purge_stale_entry_condition (afr_local_t *local, afr_private_t *priv, + int child) +{ + afr_self_heal_t *sh = NULL; + + sh = &local->self_heal; + + if (local->child_up[child] && + (!afr_is_child_present (sh->fresh_children, priv->child_count, + child)) + && (sh->child_errno[child] != ENOENT)) + return _gf_true; + + return _gf_false; +} + +void +afr_sh_purge_entry_common (call_frame_t *frame, xlator_t *this, + gf_boolean_t purge_condition (afr_local_t *local, + afr_private_t *priv, + int child)) +{ + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + afr_self_heal_t *sh = NULL; + int i = 0; + int call_count = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + for (i = 0; i < priv->child_count; i++) { + if (purge_condition (local, priv, i)) + call_count++; + } + + if (call_count == 0) { + sh->post_remove_call (frame, this); + goto out; + } + + local->call_count = call_count; + for (i = 0; i < priv->child_count; i++) { + if (!purge_condition (local, priv, i)) + continue; + gf_log (this->name, GF_LOG_INFO, "purging the stale entry %s " + "on %s", local->loc.path, priv->children[i]->name); + afr_sh_call_entry_expunge_remove (frame, this, + (long) i, &sh->buf[i], + &sh->parentbufs[i], + afr_sh_remove_entry_cbk); + } +out: + return; +} + +void +afr_sh_purge_entry (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + sh->post_remove_call = afr_sh_missing_entries_finish; + + afr_sh_purge_entry_common (frame, this, afr_sh_purge_entry_condition); +} + +void +afr_sh_purge_stale_entry (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int i = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + sh->post_remove_call = afr_sh_purge_stale_entries_done; + + for (i = 0; i < priv->child_count; i++) { + if (afr_is_child_present (sh->fresh_children, + priv->child_count, i)) + continue; + + if ((!local->child_up[i]) || sh->child_errno[i] != 0) + continue; + + GF_ASSERT (!uuid_is_null (sh->entrybuf.ia_gfid) || + uuid_is_null (sh->buf[i].ia_gfid)); + + if ((sh->entrybuf.ia_type != sh->buf[i].ia_type) || + (uuid_compare (sh->buf[i].ia_gfid, + sh->entrybuf.ia_gfid))) + continue; + + afr_children_add_child (sh->fresh_children, i, + priv->child_count); + + } + afr_sh_purge_entry_common (frame, this, + afr_sh_purge_stale_entry_condition); +} + +void +afr_sh_save_child_iatts_from_policy (int32_t *children, struct iatt *bufs, + struct iatt *save, + unsigned int child_count) +{ + int i = 0; + int child = 0; + gf_boolean_t saved = _gf_false; + + GF_ASSERT (save); + //if iatt buf with gfid exists sets it + for (i = 0; i < child_count; i++) { + child = children[i]; + if (child == -1) + break; + *save = bufs[child]; + saved = _gf_true; + if (!uuid_is_null (save->ia_gfid)) + break; + } + GF_ASSERT (saved); +} + +void +afr_get_children_of_fresh_parent_dirs (afr_self_heal_t *sh, + unsigned int child_count) +{ + afr_children_intersection_get (sh->success_children, + sh->fresh_parent_dirs, + sh->sources, child_count); + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_children, child_count); + memset (sh->sources, 0, sizeof (*sh->sources) * child_count); +} + +void +afr_sh_children_lookup_done (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int32_t fresh_child_enoents = 0; + int32_t fresh_parent_count = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (op_ret < 0) + goto fail; + afr_get_children_of_fresh_parent_dirs (sh, priv->child_count); + fresh_parent_count = afr_get_children_count (sh->fresh_parent_dirs, + priv->child_count); + //we need the enoent count of the subvols present in fresh_parent_dirs + fresh_child_enoents = afr_errno_count (sh->fresh_parent_dirs, + sh->child_errno, + priv->child_count, ENOENT); + if (fresh_child_enoents == fresh_parent_count) { + afr_sh_set_error (sh, ENOENT); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_purge_entry (frame, this); + } else if (!afr_conflicting_iattrs (sh->buf, sh->fresh_children, + priv->child_count, local->loc.path, + this->name)) { + afr_sh_save_child_iatts_from_policy (sh->fresh_children, + sh->buf, &sh->entrybuf, + priv->child_count); + afr_update_gfid_from_iatts (sh->sh_gfid_req, sh->buf, + sh->fresh_children, + priv->child_count); + afr_sh_purge_stale_entry (frame, this); + } else { + op_errno = EIO; + afr_set_local_for_unhealable (local); + goto fail; + } + + return; + +fail: + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_set_error (sh, op_errno); + afr_sh_missing_entries_finish (frame, this); + return; +} + +static void +afr_sh_find_fresh_parents (call_frame_t *frame, xlator_t *this, + int32_t op_ret, int32_t op_errno) +{ + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + afr_local_t *local = NULL; + int enoent_count = 0; + int nsources = 0; + int source = -1; + int32_t subvol_status = 0; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + if (op_ret < 0) + goto out; + enoent_count = afr_errno_count (NULL, sh->child_errno, + priv->child_count, ENOENT); + if (enoent_count > 0) { + gf_log (this->name, GF_LOG_INFO, "Parent dir missing for %s," + " in missing entry self-heal, aborting missing-entry " + "self-heal", + local->loc.path); + afr_sh_missing_entries_finish (frame, this); + return; + } + + nsources = afr_build_sources (this, sh->xattr, sh->buf, + sh->pending_matrix, sh->sources, + sh->success_children, + AFR_ENTRY_TRANSACTION, &subvol_status, + _gf_true); + if ((subvol_status & ALL_FOOLS) || + (subvol_status & SPLIT_BRAIN)) { + gf_log (this->name, GF_LOG_INFO, "%s: Performing conservative " + "merge", sh->parent_loc.path); + afr_mark_success_children_sources (sh->sources, + sh->success_children, + priv->child_count); + } else if (nsources < 0) { + gf_log (this->name, GF_LOG_ERROR, "No sources for dir " + "of %s, in missing entry self-heal, aborting " + "self-heal", local->loc.path); + op_errno = EIO; + goto out; + } + + source = afr_sh_select_source (sh->sources, priv->child_count); + if (source == -1) { + GF_ASSERT (0); + gf_log (this->name, GF_LOG_DEBUG, "No active sources found."); + op_errno = EIO; + goto out; + } + afr_get_fresh_children (sh->success_children, sh->sources, + sh->fresh_parent_dirs, priv->child_count); + afr_sh_common_lookup (frame, this, &local->loc, + afr_sh_children_lookup_done, NULL, 0, + NULL); + return; + +out: + afr_sh_set_error (sh, op_errno); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_missing_entries_finish (frame, this); + return; +} + +void +afr_sh_common_reset (afr_self_heal_t *sh, unsigned int child_count) +{ + int i = 0; + + for (i = 0; i < child_count; i++) { + memset (&sh->buf[i], 0, sizeof (sh->buf[i])); + memset (&sh->parentbufs[i], 0, sizeof (sh->parentbufs[i])); + sh->child_errno[i] = 0; + } + memset (&sh->parentbuf, 0, sizeof (sh->parentbuf)); + sh->success_count = 0; + afr_reset_children (sh->success_children, child_count); + afr_reset_children (sh->fresh_children, child_count); + afr_reset_xattr (sh->xattr, child_count); + loc_wipe (&sh->lookup_loc); +} + +/* afr self-heal state will be lost if this call is made + * please check the afr_sh_common_reset that is called in this function + */ +int +afr_sh_common_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, + afr_lookup_done_cbk_t lookup_done , uuid_t gfid, + int32_t flags, dict_t *xdata) +{ + afr_local_t *local = NULL; + int i = 0; + int call_count = 0; + afr_private_t *priv = NULL; + dict_t *xattr_req = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + priv = this->private; + sh = &local->self_heal; + + call_count = afr_up_children_count (local->child_up, priv->child_count); + + local->call_count = call_count; + + xattr_req = dict_new(); + + if (xattr_req) { + afr_xattr_req_prepare (this, xattr_req, loc->path); + if (gfid) { + gf_log (this->name, GF_LOG_DEBUG, + "looking up %s with gfid: %s", + loc->path, uuid_utoa (gfid)); + GF_ASSERT (!uuid_is_null (gfid)); + afr_set_dict_gfid (xattr_req, gfid); + } + } + + afr_sh_common_reset (sh, priv->child_count); + sh->lookup_done = lookup_done; + loc_copy (&sh->lookup_loc, loc); + sh->lookup_flags = flags; + for (i = 0; i < priv->child_count; i++) { + if (local->child_up[i]) { + gf_log (this->name, GF_LOG_DEBUG, + "looking up %s on subvolume %s", + loc->path, priv->children[i]->name); + + STACK_WIND_COOKIE (frame, + afr_sh_common_lookup_cbk, + (void *) (long) i, + priv->children[i], + priv->children[i]->fops->lookup, + loc, xattr_req); + + if (!--call_count) + break; + } + } + + if (xattr_req) + dict_unref (xattr_req); + + return 0; +} + + + +int +afr_sh_post_nb_entrylk_missing_entry_sh_cbk (call_frame_t *frame, + xlator_t *this) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + int_lock = &local->internal_lock; + sh = &local->self_heal; + + if (int_lock->lock_op_ret < 0) { + gf_log (this->name, GF_LOG_INFO, + "Non blocking entrylks failed."); + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + afr_sh_missing_entries_done (frame, this); + } else { + + gf_log (this->name, GF_LOG_DEBUG, + "Non blocking entrylks done. Proceeding to FOP"); + afr_sh_common_lookup (frame, this, &sh->parent_loc, + afr_sh_find_fresh_parents, + NULL, AFR_LOOKUP_FAIL_CONFLICTS, + NULL); + } + + return 0; +} + +int +afr_sh_entrylk (call_frame_t *frame, xlator_t *this, loc_t *loc, + char *base_name, afr_lock_cbk_t lock_cbk) +{ + afr_internal_lock_t *int_lock = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + + priv = this->private; + local = frame->local; + int_lock = &local->internal_lock; + + int_lock->transaction_lk_type = AFR_SELFHEAL_LK; + int_lock->selfheal_lk_type = AFR_ENTRY_SELF_HEAL_LK; + + afr_set_lock_number (frame, this); + + int_lock->lk_basename = base_name; + int_lock->lk_loc = loc; + int_lock->lock_cbk = lock_cbk; + int_lock->domain = this->name; + + int_lock->lockee_count = 0; + afr_init_entry_lockee (&int_lock->lockee[0], local, loc, + base_name, priv->child_count); + int_lock->lockee_count++; + afr_nonblocking_entrylk (frame, this); + + return 0; +} + +static int +afr_self_heal_parent_entrylk (call_frame_t *frame, xlator_t *this, + afr_lock_cbk_t lock_cbk) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_internal_lock_t *int_lock = NULL; + int ret = -1; + int32_t op_errno = 0; + + local = frame->local; + sh = &local->self_heal; + + gf_log (this->name, GF_LOG_TRACE, + "attempting to recreate missing entries for path=%s", + local->loc.path); + + ret = afr_build_parent_loc (&sh->parent_loc, &local->loc, &op_errno); + if (ret) + goto out; + + afr_sh_entrylk (frame, this, &sh->parent_loc, NULL, + lock_cbk); + return 0; +out: + int_lock = &local->internal_lock; + int_lock->lock_op_ret = -1; + lock_cbk (frame, this); + return 0; +} + +static int +afr_self_heal_missing_entries (call_frame_t *frame, xlator_t *this) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + + local = frame->local; + sh = &local->self_heal; + + sh->sh_type_in_action = AFR_SELF_HEAL_GFID_OR_MISSING_ENTRY; + + afr_set_self_heal_status (sh, AFR_SELF_HEAL_STARTED); + + afr_self_heal_parent_entrylk (frame, this, + afr_sh_post_nb_entrylk_missing_entry_sh_cbk); + return 0; +} + +afr_local_t* +afr_self_heal_local_init (afr_local_t *l, xlator_t *this) +{ + afr_private_t *priv = NULL; + afr_local_t *lc = NULL; + afr_self_heal_t *sh = NULL; + afr_self_heal_t *shc = NULL; + int ret = 0; + + priv = this->private; + + sh = &l->self_heal; + + lc = mem_get0 (this->local_pool); + if (!lc) + goto out; + + shc = &lc->self_heal; + + shc->unwind = sh->unwind; + shc->gfid_sh_success_cbk = sh->gfid_sh_success_cbk; + shc->do_missing_entry_self_heal = sh->do_missing_entry_self_heal; + shc->do_gfid_self_heal = sh->do_gfid_self_heal; + shc->do_data_self_heal = sh->do_data_self_heal; + shc->do_metadata_self_heal = sh->do_metadata_self_heal; + shc->do_entry_self_heal = sh->do_entry_self_heal; + shc->force_confirm_spb = sh->force_confirm_spb; + shc->forced_merge = sh->forced_merge; + shc->background = sh->background; + shc->type = sh->type; + shc->data_sh_info = ""; + shc->metadata_sh_info = ""; + + uuid_copy (shc->sh_gfid_req, sh->sh_gfid_req); + if (l->loc.path) { + ret = loc_copy (&lc->loc, &l->loc); + if (ret < 0) + goto out; + } + + lc->child_up = memdup (l->child_up, + sizeof (*lc->child_up) * priv->child_count); + if (!lc->child_up) { + ret = -1; + goto out; + } + + if (l->xattr_req) + lc->xattr_req = dict_ref (l->xattr_req); + + if (l->cont.lookup.inode) + lc->cont.lookup.inode = inode_ref (l->cont.lookup.inode); + if (l->cont.lookup.xattr) + lc->cont.lookup.xattr = dict_ref (l->cont.lookup.xattr); + + lc->internal_lock.locked_nodes = + GF_CALLOC (sizeof (*l->internal_lock.locked_nodes), + priv->child_count, gf_afr_mt_char); + if (!lc->internal_lock.locked_nodes) { + ret = -1; + goto out; + } + + ret = afr_inodelk_init (&lc->internal_lock.inodelk[0], + this->name, priv->child_count); + if (ret) + goto out; + +out: + if (ret) { + afr_local_cleanup (lc, this); + lc = NULL; + } + return lc; +} + +int +afr_self_heal_completion_cbk (call_frame_t *bgsh_frame, xlator_t *this) +{ + afr_private_t * priv = NULL; + afr_local_t * local = NULL; + afr_self_heal_t * sh = NULL; + afr_local_t * orig_frame_local = NULL; + afr_self_heal_t * orig_frame_sh = NULL; + char sh_type_str[256] = {0,}; + gf_loglevel_t loglevel = 0; + + priv = this->private; + local = bgsh_frame->local; + sh = &local->self_heal; + + if (local->unhealable) { + afr_set_split_brain (this, sh->inode, SPB, SPB); + } + + afr_self_heal_type_str_get (sh, sh_type_str, + sizeof(sh_type_str)); + if (is_self_heal_failed (sh, AFR_CHECK_ALL) && !priv->shd.iamshd) { + loglevel = GF_LOG_ERROR; + } else if (!is_self_heal_failed (sh, AFR_CHECK_ALL)) { + loglevel = GF_LOG_INFO; + } else { + loglevel = GF_LOG_DEBUG; + } + + afr_log_self_heal_completion_status (local, loglevel); + + FRAME_SU_UNDO (bgsh_frame, afr_local_t); + + if (!sh->unwound && sh->unwind) { + orig_frame_local = sh->orig_frame->local; + orig_frame_sh = &orig_frame_local->self_heal; + orig_frame_sh->actual_sh_started = _gf_true; + sh->unwind (sh->orig_frame, this, sh->op_ret, sh->op_errno, + is_self_heal_failed (sh, AFR_CHECK_ALL)); + } + + if (sh->background) { + LOCK (&priv->lock); + { + priv->background_self_heals_started--; + } + UNLOCK (&priv->lock); + } + + AFR_STACK_DESTROY (bgsh_frame); + + return 0; +} + +int +afr_self_heal (call_frame_t *frame, xlator_t *this, inode_t *inode) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int32_t op_errno = 0; + int ret = 0; + afr_self_heal_t *orig_sh = NULL; + call_frame_t *sh_frame = NULL; + afr_local_t *sh_local = NULL; + loc_t *loc = NULL; + + local = frame->local; + orig_sh = &local->self_heal; + priv = this->private; + + GF_ASSERT (local->loc.path); + + gf_log (this->name, GF_LOG_TRACE, + "performing self heal on %s (metadata=%d data=%d entry=%d)", + local->loc.path, + local->self_heal.do_metadata_self_heal, + local->self_heal.do_data_self_heal, + local->self_heal.do_entry_self_heal); + + op_errno = ENOMEM; + sh_frame = copy_frame (frame); + if (!sh_frame) + goto out; + afr_set_lk_owner (sh_frame, this, sh_frame->root); + afr_set_low_priority (sh_frame); + + sh_local = afr_self_heal_local_init (local, this); + if (!sh_local) + goto out; + sh_frame->local = sh_local; + sh = &sh_local->self_heal; + + sh->inode = inode_ref (inode); + sh->orig_frame = frame; + + sh->completion_cbk = afr_self_heal_completion_cbk; + + sh->success = GF_CALLOC (priv->child_count, sizeof (*sh->success), + gf_afr_mt_char); + if (!sh->success) + goto out; + sh->sources = GF_CALLOC (sizeof (*sh->sources), priv->child_count, + gf_afr_mt_int); + if (!sh->sources) + goto out; + sh->locked_nodes = GF_CALLOC (sizeof (*sh->locked_nodes), + priv->child_count, + gf_afr_mt_int); + if (!sh->locked_nodes) + goto out; + + sh->pending_matrix = afr_matrix_create (priv->child_count, + priv->child_count); + if (!sh->pending_matrix) + goto out; + + sh->delta_matrix = afr_matrix_create (priv->child_count, + priv->child_count); + if (!sh->delta_matrix) + goto out; + + sh->fresh_parent_dirs = afr_children_create (priv->child_count); + if (!sh->fresh_parent_dirs) + goto out; + ret = afr_sh_common_create (sh, priv->child_count); + if (ret) { + op_errno = -ret; + goto out; + } + + if (local->self_heal.background) { + LOCK (&priv->lock); + { + if (priv->background_self_heals_started + < priv->background_self_heal_count) { + priv->background_self_heals_started++; + + + } else { + local->self_heal.background = _gf_false; + sh->background = _gf_false; + } + } + UNLOCK (&priv->lock); + } + + if (!local->loc.parent) { + sh->do_missing_entry_self_heal = _gf_false; + sh->do_gfid_self_heal = _gf_false; + } + + sh->sh_type_in_action = AFR_SELF_HEAL_INVALID; + + FRAME_SU_DO (sh_frame, afr_local_t); + if (sh->do_missing_entry_self_heal || sh->do_gfid_self_heal) { + afr_self_heal_missing_entries (sh_frame, this); + } else { + loc = &sh_local->loc; + if (uuid_is_null (loc->inode->gfid) && uuid_is_null (loc->gfid)) { + if (!uuid_is_null (inode->gfid)) + GF_ASSERT (!uuid_compare (inode->gfid, + sh->sh_gfid_req)); + uuid_copy (loc->gfid, sh->sh_gfid_req); + } + gf_log (this->name, GF_LOG_TRACE, + "proceeding to metadata check on %s", + local->loc.path); + + afr_sh_missing_entries_done (sh_frame, this); + } + op_errno = 0; + +out: + if (op_errno) { + orig_sh->unwind (frame, this, -1, op_errno, 1); + if (sh_frame) + AFR_STACK_DESTROY (sh_frame); + } + return 0; +} + +void +afr_self_heal_type_str_get (afr_self_heal_t *self_heal_p, char *str, + size_t size) +{ + GF_ASSERT (str && (size > strlen (" missing-entry gfid " + "meta-data data entry"))); + + if (self_heal_p->do_metadata_self_heal) { + snprintf (str, size, " meta-data"); + } + + if (self_heal_p->do_data_self_heal) { + snprintf (str + strlen(str), size - strlen(str), " data"); + } + + if (self_heal_p->do_entry_self_heal) { + snprintf (str + strlen(str), size - strlen(str), " entry"); + } + + if (self_heal_p->do_missing_entry_self_heal) { + snprintf (str + strlen(str), size - strlen(str), + " missing-entry"); + } + + if (self_heal_p->do_gfid_self_heal) { + snprintf (str + strlen(str), size - strlen(str), " gfid"); + } +} + +afr_self_heal_type +afr_self_heal_type_for_transaction (afr_transaction_type type) +{ + afr_self_heal_type sh_type = AFR_SELF_HEAL_INVALID; + + switch (type) { + case AFR_DATA_TRANSACTION: + sh_type = AFR_SELF_HEAL_DATA; + break; + case AFR_METADATA_TRANSACTION: + sh_type = AFR_SELF_HEAL_METADATA; + break; + case AFR_ENTRY_TRANSACTION: + sh_type = AFR_SELF_HEAL_ENTRY; + break; + case AFR_ENTRY_RENAME_TRANSACTION: + GF_ASSERT (0); + break; + } + return sh_type; +} + +int +afr_build_child_loc (xlator_t *this, loc_t *child, loc_t *parent, char *name) +{ + int ret = -1; + uuid_t pargfid = {0}; + + if (!child) + goto out; + + if (!uuid_is_null (parent->inode->gfid)) + uuid_copy (pargfid, parent->inode->gfid); + else if (!uuid_is_null (parent->gfid)) + uuid_copy (pargfid, parent->gfid); + + if (uuid_is_null (pargfid)) + goto out; + + if (strcmp (parent->path, "/") == 0) + ret = gf_asprintf ((char **)&child->path, "/%s", name); + else + ret = gf_asprintf ((char **)&child->path, "%s/%s", parent->path, + name); + + if (-1 == ret) { + gf_log (this->name, GF_LOG_ERROR, + "asprintf failed while setting child path"); + } + + child->name = strrchr (child->path, '/'); + if (child->name) + child->name++; + + child->parent = inode_ref (parent->inode); + child->inode = inode_new (parent->inode->table); + uuid_copy (child->pargfid, pargfid); + + if (!child->inode) { + ret = -1; + goto out; + } + + ret = 0; +out: + if ((ret == -1) && child) + loc_wipe (child); + + return ret; +} + +int +afr_sh_erase_pending (call_frame_t *frame, xlator_t *this, + afr_transaction_type type, afr_fxattrop_cbk_t cbk, + int (*finish)(call_frame_t *frame, xlator_t *this)) +{ + afr_local_t *local = NULL; + afr_self_heal_t *sh = NULL; + afr_private_t *priv = NULL; + int call_count = 0; + int i = 0; + dict_t **erase_xattr = NULL; + int ret = -1; + + local = frame->local; + sh = &local->self_heal; + priv = this->private; + + afr_sh_pending_to_delta (priv, sh->xattr, sh->delta_matrix, + sh->success, priv->child_count, type); + + erase_xattr = GF_CALLOC (sizeof (*erase_xattr), priv->child_count, + gf_afr_mt_dict_t); + if (!erase_xattr) + goto out; + + for (i = 0; i < priv->child_count; i++) { + if (sh->xattr[i]) { + call_count++; + erase_xattr[i] = dict_new (); + if (!erase_xattr[i]) + goto out; + } + } + + afr_sh_delta_to_xattr (this, sh->delta_matrix, erase_xattr, + priv->child_count, type); + + gf_log (this->name, GF_LOG_DEBUG, "Delta matrix for: %s", + lkowner_utoa (&frame->root->lk_owner)); + afr_sh_print_pending_matrix (sh->delta_matrix, this); + local->call_count = call_count; + if (call_count == 0) { + ret = 0; + finish (frame, this); + goto out; + } + + for (i = 0; i < priv->child_count; i++) { + if (!erase_xattr[i]) + continue; + + if (sh->healing_fd) {//true for ENTRY, reg file DATA transaction + STACK_WIND_COOKIE (frame, cbk, (void *) (long) i, + priv->children[i], + priv->children[i]->fops->fxattrop, + sh->healing_fd, + GF_XATTROP_ADD_ARRAY, erase_xattr[i], + NULL); + } else { + STACK_WIND_COOKIE (frame, cbk, (void *) (long) i, + priv->children[i], + priv->children[i]->fops->xattrop, + &local->loc, + GF_XATTROP_ADD_ARRAY, erase_xattr[i], + NULL); + } + } + + ret = 0; +out: + if (erase_xattr) { + for (i = 0; i < priv->child_count; i++) { + if (erase_xattr[i]) { + dict_unref (erase_xattr[i]); + } + } + } + + GF_FREE (erase_xattr); + + if (ret < 0) { + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); + finish (frame, this); + } + + return 0; +} + +void +afr_set_self_heal_status(afr_self_heal_t *sh, afr_self_heal_status status) +{ + xlator_t *this = NULL; + afr_sh_status_for_all_type *sh_status = &(sh->afr_all_sh_status); + afr_self_heal_type sh_type_in_action = sh->sh_type_in_action; + this = THIS; + + if (!sh) { + gf_log_callingfn (this->name, GF_LOG_ERROR, "Null self heal" + "Structure"); + goto out; + } + + switch (sh_type_in_action) { + case AFR_SELF_HEAL_GFID_OR_MISSING_ENTRY: + sh_status->gfid_or_missing_entry_self_heal = status; + break; + case AFR_SELF_HEAL_METADATA: + sh_status->metadata_self_heal = status; + break; + case AFR_SELF_HEAL_DATA: + sh_status->data_self_heal = status; + break; + case AFR_SELF_HEAL_ENTRY: + sh_status->entry_self_heal = status; + break; + case AFR_SELF_HEAL_INVALID: + gf_log_callingfn (this->name, GF_LOG_ERROR, "Invalid" + "self heal type in action"); + break; + } +out: + return; +} + +void +afr_set_local_for_unhealable (afr_local_t *local) +{ + afr_self_heal_t *sh = NULL; + + sh = &local->self_heal; + + local->unhealable = 1; + afr_set_self_heal_status (sh, AFR_SELF_HEAL_FAILED); +} + +int +is_self_heal_failed (afr_self_heal_t *sh, afr_sh_fail_check_type type) +{ + afr_sh_status_for_all_type sh_status = sh->afr_all_sh_status; + afr_self_heal_type sh_type_in_action = AFR_SELF_HEAL_INVALID; + afr_self_heal_status status = AFR_SELF_HEAL_FAILED; + xlator_t *this = NULL; + int sh_failed = 0; + + this = THIS; + + if (!sh) { + gf_log_callingfn (this->name, GF_LOG_ERROR, "Null self heal " + "structure"); + sh_failed = 1; + goto out; + } + + if (type == AFR_CHECK_ALL) { + if ((sh_status.gfid_or_missing_entry_self_heal == AFR_SELF_HEAL_FAILED) + || (sh_status.metadata_self_heal == AFR_SELF_HEAL_FAILED) + || (sh_status.data_self_heal == AFR_SELF_HEAL_FAILED) + || (sh_status.entry_self_heal == AFR_SELF_HEAL_FAILED)) + sh_failed = 1; + } else if (type == AFR_CHECK_SPECIFIC) { + sh_type_in_action = sh->sh_type_in_action; + switch (sh_type_in_action) { + case AFR_SELF_HEAL_GFID_OR_MISSING_ENTRY: + status = sh_status.gfid_or_missing_entry_self_heal; + break; + case AFR_SELF_HEAL_METADATA: + status = sh_status.metadata_self_heal; + break; + case AFR_SELF_HEAL_ENTRY: + status = sh_status.entry_self_heal; + break; + case AFR_SELF_HEAL_DATA: + status = sh_status.data_self_heal; + break; + case AFR_SELF_HEAL_INVALID: + status = AFR_SELF_HEAL_NOT_ATTEMPTED; + break; + } + if (status == AFR_SELF_HEAL_FAILED) + sh_failed = 1; + + } + +out: + return sh_failed; +} + +char * +get_sh_completion_status (afr_self_heal_status status) +{ + + char *not_attempted = " is not attempted"; + char *failed = " failed"; + char *started = " is started"; + char *sync_begin = " is successfully completed"; + char *result = " has unknown status"; + + switch (status) + { + case AFR_SELF_HEAL_NOT_ATTEMPTED: + result = not_attempted; + break; + case AFR_SELF_HEAL_FAILED: + result = failed; + break; + case AFR_SELF_HEAL_STARTED: + result = started; + break; + case AFR_SELF_HEAL_SYNC_BEGIN: + result = sync_begin; + break; + } + + return result; + +} + +void +afr_log_self_heal_completion_status (afr_local_t *local, gf_loglevel_t loglvl) +{ + + char sh_log[4096] = {0}; + afr_self_heal_t *sh = &local->self_heal; + afr_sh_status_for_all_type all_status = sh->afr_all_sh_status; + xlator_t *this = NULL; + size_t off = 0; + int data_sh = 0; + int metadata_sh = 0; + int print_log = 0; + + this = THIS; + + ADD_FMT_STRING (sh_log, off, "gfid or missing entry", + all_status.gfid_or_missing_entry_self_heal, print_log); + ADD_FMT_STRING_SYNC (sh_log, off, "metadata", + all_status.metadata_self_heal, print_log); + if (sh->background) { + ADD_FMT_STRING_SYNC (sh_log, off, "backgroung data", + all_status.data_self_heal, print_log); + } else { + ADD_FMT_STRING_SYNC (sh_log, off, "foreground data", + all_status.data_self_heal, print_log); + } + ADD_FMT_STRING_SYNC (sh_log, off, "entry", all_status.entry_self_heal, + print_log); + + if (AFR_SELF_HEAL_SYNC_BEGIN == all_status.data_self_heal && + strcmp (sh->data_sh_info, "") && sh->data_sh_info ) + data_sh = 1; + if (AFR_SELF_HEAL_SYNC_BEGIN == all_status.metadata_self_heal && + strcmp (sh->metadata_sh_info, "") && sh->metadata_sh_info) + metadata_sh = 1; + + if (!print_log) + return; + + gf_log (this->name, loglvl, "%s %s %s on %s", sh_log, + ((data_sh == 1) ? sh->data_sh_info : ""), + ((metadata_sh == 1) ? sh->metadata_sh_info : ""), + local->loc.path); +} |