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block: enable in_use flag

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Set block device in use during block migration, disallow drive_del and
bdrv_truncate for in use devices.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Marcelo Tosatti 2011-01-26 12:12:35 -02:00 • committed by Kevin Wolf
parent db593f2565
commit 8591675f44
3 changed files with 8 additions and 0 deletions
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4
blockdev.c
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@ -726,6 +726,10 @@ int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
qerror_report(QERR_DEVICE_NOT_FOUND, id);
return -1;
}
if (bdrv_in_use(bs)) {
qerror_report(QERR_DEVICE_IN_USE, id);
return -1;
}
/* quiesce block driver; prevent further io */
qemu_aio_flush();