From: Peter Lieven <pl@dlhnet.de>
To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Cc: Kevin Wolf <kwolf@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>, Jeff Cody <jcody@redhat.com>,
Anthony Liguori <anthony@codemonkey.ws>
Subject: [Qemu-devel] [PATCH 2/3] block: complete all IOs before resizing a device
Date: Mon, 11 Mar 2013 11:04:24 +0100 [thread overview]
Message-ID: <513DAC28.8090303@dlhnet.de> (raw)
this patch ensures that all pending IOs are completed
before a device is resized. this is especially important
if a device is shrinked as it the bdrv_check_request()
result is invalidated.
Signed-off-by: Peter Lieven <pl@kamp.de>
---
blockdev.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/blockdev.c b/blockdev.c
index 0e67d06..be36ed7 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1062,6 +1062,9 @@ void qmp_block_resize(const char *device, int64_t size, Error **errp)
return;
}
+ /* complete all in-flight operations before resizing the device */
+ bdrv_drain_all();
+
switch (bdrv_truncate(bs, size)) {
case 0:
break;
--
1.7.9.5
next reply other threads:[~2013-03-11 10:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-11 10:04 Peter Lieven [this message]
2013-03-19 13:11 ` [Qemu-devel] [PATCH 2/3] block: complete all IOs before resizing a device Kevin Wolf
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