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From 7ac8b98c5873a6c69a73a2a1c03518137024efb8 Mon Sep 17 00:00:00 2001
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From: Jeffrey Cody <jcody@redhat.com>
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Date: Wed, 6 Nov 2013 19:01:09 +0100
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Subject: [PATCH 79/81] block: vhdx - add migration blocker
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RH-Author: Jeffrey Cody <jcody@redhat.com>
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Message-id: <92e2ff0b02d3cfe596589be909331fd83e66667b.1383763969.git.jcody@redhat.com>
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Patchwork-id: 55578
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O-Subject: [RHEL7 qemu-kvm PATCH 1/3] block: vhdx - add migration blocker
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Bugzilla: 1007176
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Alex Williamson <alex.williamson@redhat.com>
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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This blocks migration for VHDX image files, until the
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functionality can be supported.
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Signed-off-by: Jeff Cody <jcody@redhat.com>
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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(cherry picked from commit 5641bf405608cc89578fafed8ec689a19046285a)
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---
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block/vhdx.c | 10 ++++++++++
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1 file changed, 10 insertions(+)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/vhdx.c | 10 ++++++++++
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1 files changed, 10 insertions(+), 0 deletions(-)
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diff --git a/block/vhdx.c b/block/vhdx.c
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index e9704b1..11d923f 100644
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--- a/block/vhdx.c
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+++ b/block/vhdx.c
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@@ -20,6 +20,7 @@
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#include "qemu/module.h"
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#include "qemu/crc32c.h"
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#include "block/vhdx.h"
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+#include "migration/migration.h"
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/* Several metadata and region table data entries are identified by
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@@ -159,6 +160,7 @@ typedef struct BDRVVHDXState {
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VHDXParentLocatorHeader parent_header;
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VHDXParentLocatorEntry *parent_entries;
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+ Error *migration_blocker;
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} BDRVVHDXState;
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uint32_t vhdx_checksum_calc(uint32_t crc, uint8_t *buf, size_t size,
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@@ -805,6 +807,12 @@ static int vhdx_open(BlockDriverState *bs, QDict *options, int flags)
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/* TODO: differencing files, write */
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+ /* Disable migration when VHDX images are used */
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+ error_set(&s->migration_blocker,
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+ QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED,
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+ "vhdx", bs->device_name, "live migration");
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+ migrate_add_blocker(s->migration_blocker);
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+
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return 0;
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fail:
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qemu_vfree(s->headers[0]);
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@@ -951,6 +959,8 @@ static void vhdx_close(BlockDriverState *bs)
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qemu_vfree(s->headers[1]);
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qemu_vfree(s->bat);
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qemu_vfree(s->parent_entries);
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+ migrate_del_blocker(s->migration_blocker);
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+ error_free(s->migration_blocker);
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}
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static BlockDriver bdrv_vhdx = {
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--
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1.7.1
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