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authorPranith Kumar K <pkarampu@redhat.com>2020-05-29 14:24:53 +0530
committerPranith Kumar Karampuri <pkarampu@redhat.com>2020-06-08 13:49:12 +0000
commitaf89d9e623cd99d3cec55cd650304d7ff9fae7e5 (patch)
tree06e567ce03d0e095afbf2a001164d96856357f5d /xlators/cluster/dht/src
parenta113d936216298a4ea8812b8843cac4837b53cd1 (diff)
cluster/afr: Delay post-op for fsync
Problem: AFR doesn't delay post-op for fsync fop. For fsync heavy workloads this leads to un-necessary fxattrop/finodelk for every fsync leading to bad performance. Fix: Have delayed post-op for fsync. Add special flag in xdata to indicate that afr shouldn't delay post-op in cases where either the process will terminate or graph-switch would happen. Otherwise it leads to un-necessary heals when the graph-switch/process-termination happens before delayed-post-op completes. Fixes: #1253 Change-Id: I531940d13269a111c49e0510d49514dc169f4577 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Diffstat (limited to 'xlators/cluster/dht/src')
-rw-r--r--xlators/cluster/dht/src/dht-rebalance.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/xlators/cluster/dht/src/dht-rebalance.c b/xlators/cluster/dht/src/dht-rebalance.c
index c369950..af74d1a 100644
--- a/xlators/cluster/dht/src/dht-rebalance.c
+++ b/xlators/cluster/dht/src/dht-rebalance.c
@@ -1525,6 +1525,7 @@ dht_migrate_file(xlator_t *this, loc_t *loc, xlator_t *from, xlator_t *to,
xlator_t *old_target = NULL;
xlator_t *hashed_subvol = NULL;
fd_t *linkto_fd = NULL;
+ dict_t *xdata = NULL;
if (from == to) {
gf_msg_debug(this->name, 0,
@@ -1848,7 +1849,15 @@ dht_migrate_file(xlator_t *this, loc_t *loc, xlator_t *from, xlator_t *to,
/* TODO: Sync the locks */
- ret = syncop_fsync(to, dst_fd, 0, NULL, NULL, NULL, NULL);
+ xdata = dict_new();
+ if (!xdata || dict_set_int8(xdata, "last-fsync", 1)) {
+ gf_log(this->name, GF_LOG_ERROR,
+ "%s: failed to set last-fsync flag on "
+ "%s (%s)",
+ loc->path, to->name, strerror(ENOMEM));
+ }
+
+ ret = syncop_fsync(to, dst_fd, 0, NULL, NULL, xdata, NULL);
if (ret) {
gf_log(this->name, GF_LOG_WARNING, "%s: failed to fsync on %s (%s)",
loc->path, to->name, strerror(-ret));
@@ -2311,11 +2320,15 @@ out:
if (dst_fd)
syncop_close(dst_fd);
+
if (src_fd)
syncop_close(src_fd);
if (linkto_fd)
syncop_close(linkto_fd);
+ if (xdata)
+ dict_unref(xdata);
+
loc_wipe(&tmp_loc);
loc_wipe(&parent_loc);