From 0a86bd1aa3004a9f27e59eb08f8facf312234737 Mon Sep 17 00:00:00 2001 From: Shehjar Tikoo Date: Thu, 25 Feb 2010 15:38:03 +0000 Subject: distribute: Respect end-of-dir on readdir only for last subvol We need to ensure that only the last subvolume's end-of-directory notification is respected so that directory reading does not stop before all subvolumes have been read. That could happen because the posix for each subvolume sends a ENOENT on end-of-directory but in distribute we're not concerned only with a posix's view of the directory but the aggregated namespace' view of the directory, which is maintained by distribute. Signed-off-by: Shehjar Tikoo Signed-off-by: Anand V. Avati BUG: 597 (miscellaneous fixes for xlators to work well with NFS xlator) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=597 --- xlators/cluster/dht/src/dht-common.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'xlators/cluster/dht/src/dht-common.c') diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c index 523a62429f6..7dcc7205ad0 100644 --- a/xlators/cluster/dht/src/dht-common.c +++ b/xlators/cluster/dht/src/dht-common.c @@ -2168,6 +2168,15 @@ dht_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, count++; } op_ret = count; + /* We need to ensure that only the last subvolume's end-of-directory + * notification is respected so that directory reading does not stop + * before all subvolumes have been read. That could happen because the + * posix for each subvolume sends a ENOENT on end-of-directory but in + * distribute we're not concerned only with a posix's view of the + * directory but the aggregated namespace' view of the directory. + */ + if (prev->this != dht_last_up_subvol (this)) + op_errno = 0; done: if (count == 0) { @@ -2258,6 +2267,15 @@ dht_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, } } op_ret = count; + /* We need to ensure that only the last subvolume's end-of-directory + * notification is respected so that directory reading does not stop + * before all subvolumes have been read. That could happen because the + * posix for each subvolume sends a ENOENT on end-of-directory but in + * distribute we're not concerned only with a posix's view of the + * directory but the aggregated namespace' view of the directory. + */ + if (prev->this != dht_last_up_subvol (this)) + op_errno = 0; done: if (count == 0) { -- cgit