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authorRaghavendra G <raghavendra@gluster.com>2009-11-19 17:28:00 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-11-20 05:02:43 -0800
commit96ac4559414035288fa18e72a21628ea3cdf6a4c (patch)
treebb8afbd6eadb447a1ff4898a53ce4db7711f0639 /xlators/performance/io-cache
parent83598e6015d76e2bebd0a3ad5141801a2864af1c (diff)
performance/io-cache: don't use stat got in read_cbk if it is zero-filled.
- translators like io-cache, read-ahead return a zero-filled stbuf in readv_cbk and usage of zero filled stat for cache validation is not correct. Signed-off-by: Raghavendra G <raghavendra@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 376 (server-side io-cache is preventing client-side io-cache from working) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=376
Diffstat (limited to 'xlators/performance/io-cache')
-rw-r--r--xlators/performance/io-cache/src/io-cache.c21
-rw-r--r--xlators/performance/io-cache/src/page.c24
2 files changed, 29 insertions, 16 deletions
diff --git a/xlators/performance/io-cache/src/io-cache.c b/xlators/performance/io-cache/src/io-cache.c
index 84b184993..59eaf4c03 100644
--- a/xlators/performance/io-cache/src/io-cache.c
+++ b/xlators/performance/io-cache/src/io-cache.c
@@ -179,18 +179,20 @@ ioc_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
inode_ctx_get (inode, this, &tmp_ioc_inode);
ioc_inode = (ioc_inode_t *)(long)tmp_ioc_inode;
if (ioc_inode) {
+ ioc_inode_lock (ioc_inode);
+ {
+ if (ioc_inode->cache.mtime == 0) {
+ ioc_inode->cache.mtime = stbuf->st_mtime;
+ }
+ }
+ ioc_inode_unlock (ioc_inode);
+
cache_still_valid = ioc_cache_still_valid (ioc_inode,
stbuf);
if (!cache_still_valid) {
ioc_inode_flush (ioc_inode);
}
- /* update the time-stamp of revalidation */
- ioc_inode_lock (ioc_inode);
- {
- gettimeofday (&ioc_inode->cache.tv, NULL);
- }
- ioc_inode_unlock (ioc_inode);
ioc_table_lock (ioc_inode->table);
{
@@ -468,6 +470,7 @@ ioc_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,
ioc_inode = ioc_inode_update (table, inode,
weight);
+
__inode_ctx_put (fd->inode, this,
(uint64_t)(long)ioc_inode);
} else {
@@ -549,6 +552,12 @@ ioc_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
ioc_inode = ioc_inode_update (table, inode, weight);
+ ioc_inode_lock (ioc_inode);
+ {
+ ioc_inode->cache.mtime = buf->st_mtime;
+ }
+ ioc_inode_unlock (ioc_inode);
+
inode_ctx_put (fd->inode, this,
(uint64_t)(long)ioc_inode);
}
diff --git a/xlators/performance/io-cache/src/page.c b/xlators/performance/io-cache/src/page.c
index 4f9e76cb2..475a095e6 100644
--- a/xlators/performance/io-cache/src/page.c
+++ b/xlators/performance/io-cache/src/page.c
@@ -285,7 +285,7 @@ int8_t
ioc_cache_still_valid (ioc_inode_t *ioc_inode, struct stat *stbuf)
{
int8_t cache_still_valid = 1;
-
+
#if 0
if (!stbuf || (stbuf->st_mtime != ioc_inode->cache.mtime) ||
(stbuf->st_mtim.tv_nsec != ioc_inode->stbuf.st_mtim.tv_nsec))
@@ -342,31 +342,35 @@ ioc_fault_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
size_t page_size = 0;
ioc_waitq_t *waitq = NULL;
size_t iobref_page_size = 0;
+ char zero_filled = 0;
local = frame->local;
offset = local->pending_offset;
ioc_inode = local->inode;
table = ioc_inode->table;
- trav_offset = offset;
+ trav_offset = offset;
payload_size = op_ret;
+ zero_filled = ((op_ret >=0)
+ && (stbuf->st_mtime == 0));
+
ioc_inode_lock (ioc_inode);
{
- if (op_ret == -1 ||
- (op_ret >= 0 &&
- !ioc_cache_still_valid(ioc_inode, stbuf))) {
+ if (op_ret == -1 ||
+ !(zero_filled ||
+ ioc_cache_still_valid(ioc_inode, stbuf))) {
gf_log (ioc_inode->table->xl->name, GF_LOG_TRACE,
"cache for inode(%p) is invalid. flushing "
"all pages", ioc_inode);
destroy_size = __ioc_inode_flush (ioc_inode);
- }
-
- if (op_ret >= 0)
+ }
+
+ if ((op_ret >= 0) && !zero_filled)
ioc_inode->cache.mtime = stbuf->st_mtime;
-
+
gettimeofday (&ioc_inode->cache.tv, NULL);
-
+
if (op_ret < 0) {
/* error, readv returned -1 */
page = ioc_page_get (ioc_inode, offset);