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authorKevin Wolf <kwolf@redhat.com>2019-07-22 17:44:27 +0200
committerMichael Roth <mdroth@linux.vnet.ibm.com>2019-11-12 16:31:49 -0600
commite092a17d3825a8f2c93cb429aaa5d857b579b64c (patch)
treef5c1f9fb1191af3ac67e4edd55a45a155a16b203 /simpletrace.h
parent088f1e8fd9e790bc5766bd43af134230abcff6dd (diff)
mirror: Keep mirror_top_bs drained after dropping permissions
mirror_top_bs is currently implicitly drained through its connection to the source or the target node. However, the drain section for target_bs ends early after moving mirror_top_bs from src to target_bs, so that requests can already be restarted while mirror_top_bs is still present in the chain, but has dropped all permissions and therefore runs into an assertion failure like this: qemu-system-x86_64: block/io.c:1634: bdrv_co_write_req_prepare: Assertion `child->perm & BLK_PERM_WRITE' failed. Keep mirror_top_bs drained until all graph changes have completed. Cc: qemu-stable@nongnu.org Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> (cherry picked from commit d2da5e288a2e71e82866c8fdefd41b5727300124) Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Diffstat (limited to 'simpletrace.h')
0 files changed, 0 insertions, 0 deletions