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block: vhdx - add migration blocker 

This blocks migration for VHDX image files, until the
functionality can be supported.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Jeff Cody 2013-10-01 11:59:20 -04:00 committed by Stefan Hajnoczi
parent 2fa9aa59cf
commit 5641bf4056
1 changed files with 10 additions and 0 deletions
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10
block/vhdx.c
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@ -20,6 +20,7 @@
#include "qemu/module.h"
#include "qemu/crc32c.h"
#include "block/vhdx.h"
#include "migration/migration.h"
/* Several metadata and region table data entries are identified by
@ -159,6 +160,7 @@ typedef struct BDRVVHDXState {
VHDXParentLocatorHeader parent_header;
VHDXParentLocatorEntry *parent_entries;
Error *migration_blocker;
} BDRVVHDXState;
uint32_t vhdx_checksum_calc(uint32_t crc, uint8_t *buf, size_t size,
@ -806,6 +808,12 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags,
/* TODO: differencing files, write */
/* Disable migration when VHDX images are used */
error_set(&s->migration_blocker,
QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED,
"vhdx", bs->device_name, "live migration");
migrate_add_blocker(s->migration_blocker);
return 0;
fail:
qemu_vfree(s->headers[0]);
@ -952,6 +960,8 @@ static void vhdx_close(BlockDriverState *bs)
qemu_vfree(s->headers[1]);
qemu_vfree(s->bat);
qemu_vfree(s->parent_entries);
migrate_del_blocker(s->migration_blocker);
error_free(s->migration_blocker);
}
static BlockDriver bdrv_vhdx = {