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authorN Balachandran <nbalacha@redhat.com>2019-08-09 14:34:22 +0530
committerAmar Tumballi <amarts@redhat.com>2019-08-14 03:21:03 +0000
commit089e53c7f1c32644ce2b37830b678b4c0c7071fc (patch)
tree04a020934ae845ad4d310e8410cbfa6bda46c27a /glusterfsd/src/glusterfsd.c
parent5707f2eb1c6933e70300227a6068b6b50befbb87 (diff)
fuse: Set limit on invalidate queue size
If the glusterfs fuse client process is unable to process the invalidate requests quickly enough, the number of such requests quickly grows large enough to use a significant amount of memory. We are now introducing another option to set an upper limit on these to prevent runaway memory usage. Change-Id: Iddfff1ee2de1466223e6717f7abd4b28ed947788 Fixes: bz#1732717 Signed-off-by: N Balachandran <nbalacha@redhat.com>
Diffstat (limited to 'glusterfsd/src/glusterfsd.c')
-rw-r--r--glusterfsd/src/glusterfsd.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/glusterfsd/src/glusterfsd.c b/glusterfsd/src/glusterfsd.c
index 968b97c2eac..b2fc944b92a 100644
--- a/glusterfsd/src/glusterfsd.c
+++ b/glusterfsd/src/glusterfsd.c
@@ -223,6 +223,9 @@ static struct argp_option gf_options[] = {
{"lru-limit", ARGP_FUSE_LRU_LIMIT_KEY, "N", 0,
"Set fuse module's limit for number of inodes kept in LRU list to N "
"[default: 131072]"},
+ {"invalidate-limit", ARGP_FUSE_INVALIDATE_LIMIT_KEY, "N", 0,
+ "Suspend inode invalidations implied by 'lru-limit' if the number of "
+ "outstanding invalidations reaches N"},
{"background-qlen", ARGP_FUSE_BACKGROUND_QLEN_KEY, "N", 0,
"Set fuse module's background queue length to N "
"[default: 64]"},
@@ -518,6 +521,16 @@ set_fuse_mount_options(glusterfs_ctx_t *ctx, dict_t *options)
}
}
+ if (cmd_args->invalidate_limit >= 0) {
+ ret = dict_set_int32(options, "invalidate-limit",
+ cmd_args->invalidate_limit);
+ if (ret < 0) {
+ gf_msg("glusterfsd", GF_LOG_ERROR, 0, glusterfsd_msg_4,
+ "invalidate-limit");
+ goto err;
+ }
+ }
+
if (cmd_args->background_qlen) {
ret = dict_set_int32(options, "background-qlen",
cmd_args->background_qlen);
@@ -1317,6 +1330,14 @@ parse_opts(int key, char *arg, struct argp_state *state)
argp_failure(state, -1, 0, "unknown LRU limit option %s", arg);
break;
+ case ARGP_FUSE_INVALIDATE_LIMIT_KEY:
+ if (!gf_string2int32(arg, &cmd_args->invalidate_limit))
+ break;
+
+ argp_failure(state, -1, 0, "unknown invalidate limit option %s",
+ arg);
+ break;
+
case ARGP_FUSE_BACKGROUND_QLEN_KEY:
if (!gf_string2int(arg, &cmd_args->background_qlen))
break;