Re: [Qemu-devel] ping Re: [PATCH v7 03/16] migration: split common postcopy out of ram postcopy

[Kevin Wolf <kwolf@redhat.com>]

Am 20.09.2017 um 13:45 hat Juan Quintela geschrieben:
> "Dr. David Alan Gilbert" <dgilbert@redhat.com> wrote:
> > * Vladimir Sementsov-Ogievskiy (vsementsov@virtuozzo.com) wrote:
> >> ping for 1-3
> >> Can we merge them?
> >
> > I see all of them have R-b's; so lets try and put them in the next
> > migration merge.
> >
> > Quintela: Sound good?
> 
> Yeap.

This patch broke qemu-iotests 181 ('Test postcopy live migration with
shared storage'):

--- /home/kwolf/source/qemu/tests/qemu-iotests/181.out  2017-06-16 19:19:53.000000000 +0200
+++ 181.out.bad 2017-09-25 15:20:40.787582000 +0200
@@ -21,18 +21,16 @@
 === Do some I/O on the destination ===
 
 QEMU X.Y.Z monitor - type 'help' for more information
-(qemu) qemu-io disk "read -P 0x55 0 64k"
+(qemu) QEMU_PROG: Expected vmdescription section, but got 0
+QEMU_PROG: Failed to get "write" lock
+Is another process using the image?
+qemu-io disk "read -P 0x55 0 64k"
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 (qemu) 
 (qemu) qemu-io disk "write -P 0x66 1M 64k"
-wrote 65536/65536 bytes at offset 1048576
-64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-
-=== Shut down and check image ===
-
-(qemu) quit
-(qemu) 
-(qemu) quit
-No errors were found on the image.
-*** done
+QEMU_PROG: block/io.c:1359: bdrv_aligned_pwritev: Assertion `child->perm & BLK_PERM_WRITE' failed.
+./common.config: Aborted                 (core dumped) ( if [ -n "${QEMU_NEED_PID}" ]; then
+echo $BASHPID > "${QEMU_TEST_DIR}/qemu-${_QEMU_HANDLE}.pid";
+fi; exec "$QEMU_PROG" $QEMU_OPTIONS "$@" )
+Timeout waiting for ops/sec on handle 1