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From fef5fb73545bed5a4040db1f8e4e855286c1981d Mon Sep 17 00:00:00 2001
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From: Ravishankar N <ravishankar@redhat.com>
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Date: Wed, 18 Jul 2018 14:16:46 +0530
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Subject: [PATCH 327/333] afr: switch lk_owner only when pre-op succeeds
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Backport of https://review.gluster.org/#/c/20527/
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Problem:
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In a disk full scenario, we take a failure path in afr_transaction_perform_fop()
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and go to unlock phase. But we change the lk-owner before that, causing unlock
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to fail. When mount issues another fop that takes locks on that file, it hangs.
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Fix:
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Change lk-owner only when we are about to perform the fop phase.
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Also fix the same issue for arbiters when afr_txn_arbitrate_fop() fails the fop.
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Also removed the DISK_SPACE_CHECK_AND_GOTO in posix_xattrop. Otherwise truncate
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to zero will fail pre-op phase with ENOSPC when the user is actually trying to
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freee up space.
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Change-Id: I8663003fa7d472e93fe61cc1e39c78084d3de81f
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BUG: 1599998
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Signed-off-by: Ravishankar N <ravishankar@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/144275
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
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---
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xlators/cluster/afr/src/afr-transaction.c | 20 ++++++++++----------
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xlators/storage/posix/src/posix.c | 5 -----
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2 files changed, 10 insertions(+), 15 deletions(-)
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diff --git a/xlators/cluster/afr/src/afr-transaction.c b/xlators/cluster/afr/src/afr-transaction.c
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index 321b6f1..3f55070 100644
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--- a/xlators/cluster/afr/src/afr-transaction.c
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+++ b/xlators/cluster/afr/src/afr-transaction.c
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@@ -495,11 +495,10 @@ afr_txn_arbitrate_fop (call_frame_t *frame, xlator_t *this)
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local->op_errno = ENOTCONN;
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for (i = 0; i < priv->child_count; i++)
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local->transaction.failed_subvols[i] = 1;
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- afr_changelog_post_op (frame, this);/*uninherit should happen*/
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- } else {
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- afr_transaction_fop (frame, this);
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}
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+ afr_transaction_fop (frame, this);
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+
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return;
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}
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@@ -529,13 +528,6 @@ afr_transaction_perform_fop (call_frame_t *frame, xlator_t *this)
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local->transaction.failed_subvols[i] = 1;
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}
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}
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- /* Perform fops with the lk-owner from top xlator.
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- * Eg: lk-owner of posix-lk and flush should be same,
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- * flush cant clear the posix-lks without that lk-owner.
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- */
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- afr_save_lk_owner (frame);
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- frame->root->lk_owner =
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- local->transaction.main_frame->root->lk_owner;
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if (local->pre_op_compat)
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/* old mode, pre-op was done as afr_changelog_do()
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@@ -561,6 +553,14 @@ afr_transaction_perform_fop (call_frame_t *frame, xlator_t *this)
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}
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fop:
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+ /* Perform fops with the lk-owner from top xlator.
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+ * Eg: lk-owner of posix-lk and flush should be same,
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+ * flush cant clear the posix-lks without that lk-owner.
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+ */
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+ afr_save_lk_owner (frame);
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+ frame->root->lk_owner =
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+ local->transaction.main_frame->root->lk_owner;
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+
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if (priv->arbiter_count == 1) {
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afr_txn_arbitrate_fop (frame, this);
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} else {
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diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
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index 01f472b..ddb875c 100644
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--- a/xlators/storage/posix/src/posix.c
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+++ b/xlators/storage/posix/src/posix.c
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@@ -6147,16 +6147,11 @@ do_xattrop (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd,
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dict_t *xattr_rsp = NULL;
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dict_t *xdata_rsp = NULL;
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struct iatt stbuf = {0};
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- struct posix_private *priv = NULL;
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-
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VALIDATE_OR_GOTO (frame, out);
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VALIDATE_OR_GOTO (xattr, out);
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VALIDATE_OR_GOTO (this, out);
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- priv = this->private;
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- DISK_SPACE_CHECK_AND_GOTO (frame, priv, xdata, op_ret, op_errno, out);
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-
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if (fd) {
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op_ret = posix_fd_ctx_get (fd, this, &pfd, &op_errno);
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if (op_ret < 0) {
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--
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1.8.3.1
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