| commit | 8a6cf8627aa8b805f55bf0c5197f7a3f2bfdf0f1 | |
| author | Eric Blake <eblake@redhat.com> | |
| Wed, 9 Jan 2019 03:57:31 +0000 (8 21:57 -0600) | ||
| committer | Eric Blake <eblake@redhat.com> | |
| Wed, 9 Jan 2019 04:07:13 +0000 (8 22:07 -0600) | ||
| tree | 844a43020266c6b64acfebda1041787336ebb6e1 | treesnapshot (tar.gz zip) |
| parent | 2c4ea687f76e71ba663e5abc77ad4bbd60f3a9aa | commitdiff |
qemu-nbd: Add --bitmap=NAME option
Having to fire up qemu, then use QMP commands for nbd-server-start
and nbd-server-add, just to expose a persistent dirty bitmap, is
rather tedious. Make it possible to expose a dirty bitmap using
just qemu-nbd (of course, for now this only works when qemu-nbd is
visiting a BDS formatted as qcow2).
For now, I play it safe and only allow a bitmap to be exposed on
a read-only image. We may relax it in the future.
Signed-off-by: Eric Blake <eblake@redhat.com>
Having to fire up qemu, then use QMP commands for nbd-server-start
and nbd-server-add, just to expose a persistent dirty bitmap, is
rather tedious. Make it possible to expose a dirty bitmap using
just qemu-nbd (of course, for now this only works when qemu-nbd is
visiting a BDS formatted as qcow2).
For now, I play it safe and only allow a bitmap to be exposed on
a read-only image. We may relax it in the future.
Signed-off-by: Eric Blake <eblake@redhat.com>
| qemu-nbd.c | diffblobblamehistory | |
| qemu-nbd.texi | diffblobblamehistory |