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blockdev: add Abort transaction 

The Abort action can be used to test QMP 'transaction' failure.  Add it
as the last action to exercise the .abort() and .cleanup() code paths
for all previous actions.

Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2013-06-24 17:13:18 +02:00 committed by Kevin Wolf
parent 3037f36446
commit 78b18b78aa
2 changed files with 27 additions and 1 deletions
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15
blockdev.c
View File

@ -963,6 +963,16 @@ static void drive_backup_abort(BlkTransactionState *common)
}
}
static void abort_prepare(BlkTransactionState *common, Error **errp)
{
error_setg(errp, "Transaction aborted using Abort action");
}
static void abort_commit(BlkTransactionState *common)
{
assert(false); /* this action never succeeds */
}
static const BdrvActionOps actions[] = {
[TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = {
.instance_size = sizeof(ExternalSnapshotState),
@ -975,6 +985,11 @@ static const BdrvActionOps actions[] = {
.prepare = drive_backup_prepare,
.abort = drive_backup_abort,
},
[TRANSACTION_ACTION_KIND_ABORT] = {
.instance_size = sizeof(BlkTransactionState),
.prepare = abort_prepare,
.commit = abort_commit,
},
};
/*

13
qapi-schema.json
View File

@ -1659,6 +1659,16 @@
'*on-source-error': 'BlockdevOnError',
'*on-target-error': 'BlockdevOnError' } }
##
# @Abort
#
# This action can be used to test transaction failure.
#
# Since: 1.6
###
{ 'type': 'Abort',
'data': { } }
##
# @TransactionAction
#
@ -1668,7 +1678,8 @@
{ 'union': 'TransactionAction',
'data': {
'blockdev-snapshot-sync': 'BlockdevSnapshot',
'drive-backup': 'DriveBackup'
'drive-backup': 'DriveBackup',
'abort': 'Abort'
} }
##