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authorXavier Hernandez <jahernan@redhat.com>2017-10-16 13:57:59 +0200
committerPranith Kumar Karampuri <pkarampu@redhat.com>2017-11-05 03:41:46 +0000
commit0dcd5b2feeeec7c29bd2454d6ad950d094d02b0f (patch)
tree7b0778f3d8bb3c9fbe9551d9c83fcee107af1d7b /xlators/cluster/ec
parent337b5580aa8872a69631f8af17e1add7bb2a901d (diff)
cluster/ec: create eager-lock option for non-regular files
A new option is added to allow independent configuration of eager locking for regular files and non-regular files. Change-Id: I8f80e46d36d8551011132b15c0fac549b7fb1c60 BUG: 1502610 Signed-off-by: Xavier Hernandez <jahernan@redhat.com>
Diffstat (limited to 'xlators/cluster/ec')
-rw-r--r--xlators/cluster/ec/src/ec-common.c22
-rw-r--r--xlators/cluster/ec/src/ec-types.h1
-rw-r--r--xlators/cluster/ec/src/ec.c37
3 files changed, 47 insertions, 13 deletions
diff --git a/xlators/cluster/ec/src/ec-common.c b/xlators/cluster/ec/src/ec-common.c
index f3463ba4489..6a15223e0cc 100644
--- a/xlators/cluster/ec/src/ec-common.c
+++ b/xlators/cluster/ec/src/ec-common.c
@@ -2445,6 +2445,26 @@ void ec_flush_size_version(ec_fop_data_t * fop)
ec_update_info(&fop->locks[0]);
}
+static gf_boolean_t
+ec_use_eager_lock(ec_t *ec, ec_fop_data_t *fop)
+{
+ /* Fops with no locks at this point mean that they are sent as sub-fops
+ * of other higher level fops. In this case we simply assume that the
+ * parent fop will take correct care of the eager lock. */
+ if (fop->lock_count == 0) {
+ return _gf_true;
+ }
+
+ /* We may have more than one lock, but this only happens in the rename
+ * fop, and both locks will reference an inode of the same type (a
+ * directory in this case), so we only need to check the first lock. */
+ if (fop->locks[0].lock->loc.inode->ia_type == IA_IFREG) {
+ return ec->eager_lock;
+ }
+
+ return ec->other_eager_lock;
+}
+
void ec_lock_reuse(ec_fop_data_t *fop)
{
ec_cbk_data_t *cbk;
@@ -2454,7 +2474,7 @@ void ec_lock_reuse(ec_fop_data_t *fop)
ec = fop->xl->private;
cbk = fop->answer;
- if (ec->eager_lock && cbk != NULL) {
+ if (ec_use_eager_lock(ec, fop) && cbk != NULL) {
if (cbk->xdata != NULL) {
if ((dict_get_int32(cbk->xdata, GLUSTERFS_INODELK_COUNT,
&count) == 0) && (count > 1)) {
diff --git a/xlators/cluster/ec/src/ec-types.h b/xlators/cluster/ec/src/ec-types.h
index 9aed7dc1d27..23b30548450 100644
--- a/xlators/cluster/ec/src/ec-types.h
+++ b/xlators/cluster/ec/src/ec-types.h
@@ -573,6 +573,7 @@ struct _ec {
gf_timer_t *timer;
gf_boolean_t shutdown;
gf_boolean_t eager_lock;
+ gf_boolean_t other_eager_lock;
gf_boolean_t optimistic_changelog;
gf_boolean_t parallel_writes;
uint32_t background_heals;
diff --git a/xlators/cluster/ec/src/ec.c b/xlators/cluster/ec/src/ec.c
index 09c5fa83eb9..9f361a54aa3 100644
--- a/xlators/cluster/ec/src/ec.c
+++ b/xlators/cluster/ec/src/ec.c
@@ -276,6 +276,8 @@ reconfigure (xlator_t *this, dict_t *options)
bool, failed);
GF_OPTION_RECONF ("eager-lock", ec->eager_lock, options,
bool, failed);
+ GF_OPTION_RECONF ("other-eager-lock", ec->other_eager_lock, options,
+ bool, failed);
GF_OPTION_RECONF ("background-heals", background_heals, options,
uint32, failed);
GF_OPTION_RECONF ("heal-wait-qlength", heal_wait_qlen, options,
@@ -654,6 +656,7 @@ init (xlator_t *this)
GF_OPTION_INIT ("self-heal-daemon", ec->shd.enabled, bool, failed);
GF_OPTION_INIT ("iam-self-heal-daemon", ec->shd.iamshd, bool, failed);
GF_OPTION_INIT ("eager-lock", ec->eager_lock, bool, failed);
+ GF_OPTION_INIT ("other-eager-lock", ec->other_eager_lock, bool, failed);
GF_OPTION_INIT ("background-heals", ec->background_heals, uint32, failed);
GF_OPTION_INIT ("heal-wait-qlength", ec->heal_wait_qlen, uint32, failed);
GF_OPTION_INIT ("self-heal-window-size", ec->self_heal_window_size, uint32,
@@ -1397,18 +1400,28 @@ struct volume_options options[] =
{ .key = {"eager-lock"},
.type = GF_OPTION_TYPE_BOOL,
.default_value = "on",
- .description = "Enable/Disable eager lock for disperse volume. "
- "If a fop takes a lock and completes its operation, "
- "it waits for next 1 second before releasing the lock, "
- "to see if the lock can be reused for next fop from "
- "the same client. If ec finds any lock contention within "
- "1 second it releases the lock immediately before time "
- "expires. This improves the performance of file operations."
- "However, as it takes lock on first brick, for few operations "
- "like read, discovery of lock contention might take long time "
- "and can actually degrade the performance. "
- "If eager lock is disabled, lock will be released as soon as fop "
- "completes. "
+ .description = "Enable/Disable eager lock for regular files on a "
+ "disperse volume. If a fop takes a lock and completes "
+ "its operation, it waits for next 1 second before "
+ "releasing the lock, to see if the lock can be reused "
+ "for next fop from the same client. If ec finds any lock "
+ "contention within 1 second it releases the lock "
+ "immediately before time expires. This improves the "
+ "performance of file operations. However, as it takes "
+ "lock on first brick, for few operations like read, "
+ "discovery of lock contention might take long time and "
+ "can actually degrade the performance. If eager lock is "
+ "disabled, lock will be released as soon as fop "
+ "completes."
+ },
+ { .key = {"other-eager-lock"},
+ .type = GF_OPTION_TYPE_BOOL,
+ .default_value = "on",
+ .op_version = { GD_OP_VERSION_3_12_3 },
+ .flags = OPT_FLAG_SETTABLE | OPT_FLAG_CLIENT_OPT | OPT_FLAG_DOC,
+ .tags = { "disperse" },
+ .description = "It's equivalent to the eager-lock option but for non "
+ "regular files."
},
{ .key = {"background-heals"},
.type = GF_OPTION_TYPE_INT,