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block/parallels: Do not update header or truncate image when INMIGRATE 

If we write or modify the image file while the QEMU run state is
INMIGRATE, then the BDRV_O_INACTIVE BDS flag is set.  This will cause
an assert, since the image is marked inactive.  Make sure we obey this
flag.

Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Message-id: 3996c930fa8cde8570b7a63032720d76a28fd78b.1510059970.git.jcody@redhat.com
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Jeff Cody 2017-11-07 08:10:34 -05:00 committed by Max Reitz
parent 7479bf07c4
commit 6c7d390b99
1 changed files with 2 additions and 5 deletions
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7
block/parallels.c
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@ -708,7 +708,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
s->prealloc_mode = PRL_PREALLOC_MODE_FALLOCATE;
}
if (flags & BDRV_O_RDWR) {
if ((flags & BDRV_O_RDWR) && !(flags & BDRV_O_INACTIVE)) {
s->header->inuse = cpu_to_le32(HEADER_INUSE_MAGIC);
ret = parallels_update_header(bs);
if (ret < 0) {
@ -741,12 +741,9 @@ static void parallels_close(BlockDriverState *bs)
{
BDRVParallelsState *s = bs->opaque;
if (bs->open_flags & BDRV_O_RDWR) {
if ((bs->open_flags & BDRV_O_RDWR) && !(bs->open_flags & BDRV_O_INACTIVE)) {
s->header->inuse = 0;
parallels_update_header(bs);
}
if (bs->open_flags & BDRV_O_RDWR) {
bdrv_truncate(bs->file, s->data_end << BDRV_SECTOR_BITS,
PREALLOC_MODE_OFF, NULL);
}