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authorshishir gowda <shishirng@gluster.com>2011-11-03 14:47:01 +0530
committerVijay Bellur <vijay@gluster.com>2011-11-08 22:12:09 -0800
commitfc9fbbc35efaa84e68e108895ad64b062feed280 (patch)
tree8020b68edb20d4df12920ca5f08e9298e296626f /xlators/cluster/stripe
parent3200a2be434c462b43bf3ffe0343ddc8900c5d88 (diff)
stripe readv_cbk: Fix stat return values
Workaround - If the read request, does not fall to the subvolume with the largest file size set, then we never return the correct size. This leads to clients seeing a truncated file error. The work around is to wipe stat being returned as part of read call. Problem - We were passing the stbuf returned by the first child/index, which can be different to the size/blocks returned by stat. This led to applications viewing the file as being truncated. The stbuf size needs to be the largest of all results, and blocks the aggregation from all subvolumes. (similar to stat) BUG: 3774 Change-Id: I46c53c18b2b42b1f5b86b05555bbab73bf993476 Reviewed-on: http://review.gluster.com/666 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amar@gluster.com>
Diffstat (limited to 'xlators/cluster/stripe')
-rw-r--r--xlators/cluster/stripe/src/stripe.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/xlators/cluster/stripe/src/stripe.c b/xlators/cluster/stripe/src/stripe.c
index bef1eb7495d..1bea7a73382 100644
--- a/xlators/cluster/stripe/src/stripe.c
+++ b/xlators/cluster/stripe/src/stripe.c
@@ -3556,6 +3556,9 @@ stripe_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
mlocal->replies[index].stbuf = *stbuf;
mlocal->replies[index].count = count;
mlocal->replies[index].vector = iov_dup (vector, count);
+ if (local->stbuf_size < stbuf->ia_size)
+ local->stbuf_size = stbuf->ia_size;
+ local->stbuf_blocks += stbuf->ia_blocks;
if (!mlocal->iobref)
mlocal->iobref = iobref_new ();
@@ -3613,11 +3616,15 @@ stripe_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
* cause any bugs at higher levels */
memcpy (&tmp_stbuf, &mlocal->replies[0].stbuf,
sizeof (struct iatt));
+ tmp_stbuf.ia_size = local->stbuf_size;
+ tmp_stbuf.ia_blocks = local->stbuf_blocks;
done:
/* */
GF_FREE (mlocal->replies);
tmp_iobref = mlocal->iobref;
+ /* work around for nfs truncated read. Bug 3774 */
+ WIPE (&tmp_stbuf);
STRIPE_STACK_UNWIND (readv, mframe, op_ret, op_errno, final_vec,
final_count, &tmp_stbuf, tmp_iobref);