| commit | 06c3916b35a1cf6db548450a0cfb96983c33c82f | |
| author | Wen Congyang <wency@cn.fujitsu.com> | |
| Tue, 8 Sep 2015 03:28:33 +0000 (8 11:28 +0800) | ||
| committer | Jeff Cody <jcody@redhat.com> | |
| Fri, 25 Sep 2015 12:37:07 +0000 (25 08:37 -0400) | ||
| tree | 25f33565d45bed4614ba63dbfc361f74ff153a13 | treesnapshot (tar.gz zip) |
| parent | 9568b511c9f91c3d21ea3e83426d4ee7168c98bb | commitdiff |
Backup: don't do copy-on-read in before_write_notifier
We will copy data in before_write_notifier to do backup.
It is a nested I/O request, so we cannot do copy-on-read.
The steps to reproduce it:
1. -drive copy-on-read=on,... // qemu option
2. drive_backup -f disk0 /path_to_backup.img // monitor command
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Tested-by: Jeff Cody <jcody@redhat.com>
Message-id: 1441682913-14320-3-git-send-email-wency@cn.fujitsu.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
We will copy data in before_write_notifier to do backup.
It is a nested I/O request, so we cannot do copy-on-read.
The steps to reproduce it:
1. -drive copy-on-read=on,... // qemu option
2. drive_backup -f disk0 /path_to_backup.img // monitor command
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Tested-by: Jeff Cody <jcody@redhat.com>
Message-id: 1441682913-14320-3-git-send-email-wency@cn.fujitsu.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
| block/backup.c | diffblobblamehistory |