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From cda3f47a339a8836037c0c88cd3cb4ac7c299211 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Mon, 9 Sep 2013 14:27:54 +0200
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Subject: [PATCH 03/38] block: package committing code in qmp_transaction()
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <1378736903-18489-4-git-send-email-kwolf@redhat.com>
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Patchwork-id: 54190
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O-Subject: [RHEL-7.0 qemu-kvm PATCH 03/32] block: package committing code in qmp_transaction()
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Bugzilla: 1005818
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
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Bugzilla: 1005818
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The code is simply moved into a separate function.
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Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
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Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 3b0047e86a1c215d830b1ae1da0778db4636b83a)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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blockdev.c | 19 ++++++++++++-------
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1 file changed, 12 insertions(+), 7 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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blockdev.c | 19 ++++++++++++-------
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1 files changed, 12 insertions(+), 7 deletions(-)
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diff --git a/blockdev.c b/blockdev.c
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index 9eab803..eabb3f8 100644
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--- a/blockdev.c
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+++ b/blockdev.c
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@@ -871,6 +871,17 @@ static void external_snapshot_prepare(BlockdevAction *action,
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}
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}
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+static void external_snapshot_commit(BlkTransactionStates *states)
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+{
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+ /* This removes our old bs from the bdrv_states, and adds the new bs */
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+ bdrv_append(states->new_bs, states->old_bs);
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+ /* We don't need (or want) to use the transactional
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+ * bdrv_reopen_multiple() across all the entries at once, because we
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+ * don't want to abort all of them if one of them fails the reopen */
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+ bdrv_reopen(states->new_bs, states->new_bs->open_flags & ~BDRV_O_RDWR,
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+ NULL);
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+}
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+
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/*
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* 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail
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* then we do not pivot any of the devices in the group, and abandon the
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@@ -916,13 +927,7 @@ void qmp_transaction(BlockdevActionList *dev_list, Error **errp)
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/* Now we are going to do the actual pivot. Everything up to this point
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* is reversible, but we are committed at this point */
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QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) {
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- /* This removes our old bs from the bdrv_states, and adds the new bs */
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- bdrv_append(states->new_bs, states->old_bs);
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- /* We don't need (or want) to use the transactional
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- * bdrv_reopen_multiple() across all the entries at once, because we
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- * don't want to abort all of them if one of them fails the reopen */
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- bdrv_reopen(states->new_bs, states->new_bs->open_flags & ~BDRV_O_RDWR,
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- NULL);
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+ external_snapshot_commit(states);
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}
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/* success */
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--
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1.7.1
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