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Two quorum patches for the block queue, v2. 

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Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2016-03-17-v2' into queue-block

Two quorum patches for the block queue, v2.

# gpg: Signature made Thu Mar 17 16:44:11 2016 CET using RSA key ID E838ACAD
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"

* mreitz/tags/pull-block-for-kevin-2016-03-17-v2:
  iotests: Test QUORUM_REPORT_BAD in fifo mode
  quorum: Emit QUORUM_REPORT_BAD for reads in fifo mode

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2016-03-17 16:48:49 +01:00
parent 8896e08814 509565f36f
commit 361dca7a5a
3 changed files with 26 additions and 12 deletions
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17
block/quorum.c
View File

@ -284,9 +284,17 @@ static void quorum_aio_cb(void *opaque, int ret)
QuorumChildRequest *sacb = opaque;
QuorumAIOCB *acb = sacb->parent;
BDRVQuorumState *s = acb->common.bs->opaque;
QuorumOpType type;
bool rewrite = false;
if (ret == 0) {
acb->success_count++;
} else {
QuorumOpType type;
type = acb->is_read ? QUORUM_OP_TYPE_READ : QUORUM_OP_TYPE_WRITE;
quorum_report_bad(type, acb->sector_num, acb->nb_sectors,
sacb->aiocb->bs->node_name, ret);
}
if (acb->is_read && s->read_pattern == QUORUM_READ_PATTERN_FIFO) {
/* We try to read next child in FIFO order if we fail to read */
if (ret < 0 && (acb->child_iter + 1) < s->num_children) {
@ -303,15 +311,8 @@ static void quorum_aio_cb(void *opaque, int ret)
return;
}
type = acb->is_read ? QUORUM_OP_TYPE_READ : QUORUM_OP_TYPE_WRITE;
sacb->ret = ret;
acb->count++;
if (ret == 0) {
acb->success_count++;
} else {
quorum_report_bad(type, acb->sector_num, acb->nb_sectors,
sacb->aiocb->bs->node_name, ret);
}
assert(acb->count <= s->num_children);
assert(acb->success_count <= s->num_children);
if (acb->count < s->num_children) {

17
tests/qemu-iotests/148
View File

@ -35,6 +35,7 @@ sector_size = 512
offset = 10
class TestQuorumEvents(iotests.QMPTestCase):
read_pattern = 'quorum'
def create_blkdebug_file(self, blkdebug_file, bad_sector):
file = open(blkdebug_file, 'w')
@ -48,6 +49,7 @@ sector = "%d"
def setUp(self):
driveopts = ['driver=quorum', 'vote-threshold=2']
driveopts.append('read-pattern=%s' % self.read_pattern)
for i in range(len(imgs)):
iotests.qemu_img('create', '-f', iotests.imgfmt, imgs[i], '1M')
self.create_blkdebug_file(img_conf[i], i + offset)
@ -112,7 +114,11 @@ sector = "%d"
self.vm.hmp_qemu_io("drive0", "aio_read %d %d" %
((offset + i) * sector_size, sector_size))
self.vm.qtest("clock_step %d" % delay)
self.do_check_event('img%d' % i, offset + i)
# In fifo mode only errors in the first child are detected
if i > 0 and self.read_pattern == 'fifo':
self.do_check_event(None)
else:
self.do_check_event('img%d' % i, offset + i)
# I/O errors in different children: all events are emitted
delay = 2 * event_rate
@ -120,10 +126,17 @@ sector = "%d"
self.vm.hmp_qemu_io("drive0", "aio_read %d %d" %
((offset + i) * sector_size, sector_size))
self.vm.qtest("clock_step %d" % delay)
self.do_check_event('img%d' % i, offset + i)
# In fifo mode only errors in the first child are detected
if i > 0 and self.read_pattern == 'fifo':
self.do_check_event(None)
else:
self.do_check_event('img%d' % i, offset + i)
# No more pending events
self.do_check_event(None)
class TestFifoQuorumEvents(TestQuorumEvents):
read_pattern = 'fifo'
if __name__ == '__main__':
iotests.main(supported_fmts=["raw"])

4
tests/qemu-iotests/148.out
View File

@ -1,5 +1,5 @@
.
..
----------------------------------------------------------------------
Ran 1 tests
Ran 2 tests
OK