diff options
Diffstat (limited to 'xlators/cluster/dht/src/dht-selfheal.c')
-rw-r--r-- | xlators/cluster/dht/src/dht-selfheal.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/xlators/cluster/dht/src/dht-selfheal.c b/xlators/cluster/dht/src/dht-selfheal.c index 04e58903147..1e2d7438350 100644 --- a/xlators/cluster/dht/src/dht-selfheal.c +++ b/xlators/cluster/dht/src/dht-selfheal.c @@ -332,6 +332,144 @@ out: return 0; } +gf_boolean_t +dht_is_subvol_part_of_layout (dht_layout_t *layout, xlator_t *xlator) +{ + int i = 0; + gf_boolean_t ret = _gf_false; + + for (i = 0; i < layout->cnt; i++) { + if (!strcmp (layout->list[i].xlator->name, xlator->name)) { + ret = _gf_true; + break; + + } + } + + return ret; +} + +int +dht_layout_index_from_conf (dht_layout_t *layout, xlator_t *xlator) +{ + int i = -1; + int j = 0; + + for (j = 0; j < layout->cnt; j++) { + if (!strcmp (layout->list[j].xlator->name, xlator->name)) { + i = j; + break; + } + } + + return i; +} + + +static int +dht_selfheal_dir_xattr_for_nameless_lookup (call_frame_t *frame, loc_t *loc, + dht_layout_t *layout) +{ + dht_local_t *local = NULL; + int missing_xattr = 0; + int i = 0; + xlator_t *this = NULL; + dht_conf_t *conf = NULL; + dht_layout_t *dummy = NULL; + int j = 0; + + local = frame->local; + this = frame->this; + conf = this->private; + + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].err != -1 || !layout->list[i].stop) { + /* err != -1 would mean xattr present on the directory + or the directory is non existent. + !layout->list[i].stop would mean layout absent + */ + + continue; + } + missing_xattr++; + } + + /* Also account for subvolumes with no-layout. Used for zero'ing out + the layouts and for setting quota key's if present */ + + /* Send where either the subvol is not part of layout, + * or it is part of the layout but error is non-zero but error + * is not equal to -1 or ENOENT. + */ + + for (i = 0; i < conf->subvolume_cnt; i++) { + if (dht_is_subvol_part_of_layout (layout, conf->subvolumes[i]) + == _gf_false) { + missing_xattr++; + continue; + } + + j = dht_layout_index_from_conf (layout, conf->subvolumes[i]); + + if ((j != -1) && (layout->list[j].err != -1) && + (layout->list[j].err != 0) && + (layout->list[j].err != ENOENT)) { + missing_xattr++; + } + + } + + + gf_log (this->name, GF_LOG_TRACE, + "%d subvolumes missing xattr for %s", + missing_xattr, loc->path); + + if (missing_xattr == 0) { + dht_selfheal_dir_finish (frame, this, 0); + return 0; + } + + local->call_cnt = missing_xattr; + for (i = 0; i < layout->cnt; i++) { + if (layout->list[i].err != -1 || !layout->list[i].stop) + continue; + + dht_selfheal_dir_xattr_persubvol (frame, loc, layout, i, NULL); + + if (--missing_xattr == 0) + break; + } + + dummy = dht_layout_new (this, 1); + if (!dummy) + goto out; + + for (i = 0; i < conf->subvolume_cnt && missing_xattr; i++) { + if (dht_is_subvol_part_of_layout (layout, conf->subvolumes[i]) + == _gf_false) { + dht_selfheal_dir_xattr_persubvol (frame, loc, dummy, 0, + conf->subvolumes[i]); + missing_xattr--; + continue; + } + + j = dht_layout_index_from_conf (layout, conf->subvolumes[i]); + + if ((j != -1) && (layout->list[j].err != -1) && + (layout->list[j].err != ENOENT) && + (layout->list[j].err != 0)) { + dht_selfheal_dir_xattr_persubvol (frame, loc, dummy, 0, + conf->subvolumes[i]); + missing_xattr--; + } + } + + dht_layout_unref (this, dummy); +out: + return 0; + +} + int dht_selfheal_dir_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, struct iatt *statpre, @@ -1030,6 +1168,65 @@ sorry_no_fix: return 0; } +int +dht_selfheal_directory_for_nameless_lookup (call_frame_t *frame, + dht_selfheal_dir_cbk_t dir_cbk, + loc_t *loc, dht_layout_t *layout) +{ + dht_local_t *local = NULL; + uint32_t down = 0; + uint32_t misc = 0; + int ret = 0; + xlator_t *this = NULL; + + local = frame->local; + this = frame->this; + dht_layout_anomalies (this, loc, layout, + &local->selfheal.hole_cnt, + &local->selfheal.overlaps_cnt, + NULL, &local->selfheal.down, + &local->selfheal.misc, NULL); + + down = local->selfheal.down; + misc = local->selfheal.misc; + + local->selfheal.dir_cbk = dir_cbk; + local->selfheal.layout = dht_layout_ref (this, layout); + + if (down) { + gf_log (this->name, GF_LOG_WARNING, + "%d subvolumes down -- not fixing", down); + ret = 0; + goto sorry_no_fix; + } + + if (misc) { + gf_log (this->name, GF_LOG_WARNING, + "%d subvolumes have unrecoverable errors", misc); + ret = 0; + goto sorry_no_fix; + } + + dht_layout_sort_volname (layout); + ret = dht_selfheal_dir_getafix (frame, loc, layout); + + if (ret == -1) { + gf_log (this->name, GF_LOG_WARNING, + "not able to form layout for the directory"); + goto sorry_no_fix; + } + + dht_selfheal_dir_xattr_for_nameless_lookup (frame, &local->loc, layout); + return 0; + +sorry_no_fix: + /* TODO: need to put appropriate local->op_errno */ + dht_selfheal_dir_finish (frame, this, ret); + + return 0; + + +} int dht_selfheal_restore (call_frame_t *frame, dht_selfheal_dir_cbk_t dir_cbk, |