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[Qemu-devel] [PATCH] block migration: Activate image on destination befo
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH] block migration: Activate image on destination before writing to it |
Date: |
Mon, 22 Feb 2016 10:25:13 +0100 |
When using 'migrate -b', we must make sure to take ownership of the
image before writing to it. Otherwise metadata would be thrown away on
migration completion; this was caught by the assertions introduced in
commit 09e0c771.
Reported-by: Paolo Bonzini <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
migration/block.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/migration/block.c b/migration/block.c
index a444058..3a8330a 100644
--- a/migration/block.c
+++ b/migration/block.c
@@ -786,6 +786,7 @@ static int block_load(QEMUFile *f, void *opaque, int
version_id)
int64_t addr;
BlockDriverState *bs, *bs_prev = NULL;
BlockBackend *blk;
+ Error *local_err = NULL;
uint8_t *buf;
int64_t total_sectors = 0;
int nr_sectors;
@@ -824,6 +825,12 @@ static int block_load(QEMUFile *f, void *opaque, int
version_id)
device_name);
return -EINVAL;
}
+
+ bdrv_invalidate_cache(bs, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ return -EINVAL;
+ }
}
if (total_sectors - addr < BDRV_SECTORS_PER_DIRTY_CHUNK) {
--
1.8.3.1
- [Qemu-devel] [PATCH] block migration: Activate image on destination before writing to it,
Kevin Wolf <=