469c71edc7
qcow2: add .bdrv_remove_persistent_dirty_bitmap
...
Realize .bdrv_remove_persistent_dirty_bitmap interface.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Reviewed-by: Max Reitz <mreitz@redhat.com >
Reviewed-by: John Snow <jsnow@redhat.com >
Message-id: 20170628120530.31251-29-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:59 +02:00
da0eb242ad
qcow2: add .bdrv_can_store_new_dirty_bitmap
...
Realize .bdrv_can_store_new_dirty_bitmap interface.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Reviewed-by: John Snow <jsnow@redhat.com >
Reviewed-by: Max Reitz <mreitz@redhat.com >
Message-id: 20170628120530.31251-23-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:59 +02:00
169b879359
qcow2: store bitmaps on reopening image as read-only
...
Store bitmaps and mark them read-only on reopening image as read-only.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Reviewed-by: Max Reitz <mreitz@redhat.com >
Message-id: 20170628120530.31251-21-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:58 +02:00
5f72826e7f
qcow2: add persistent dirty bitmaps support
...
Store persistent dirty bitmaps in qcow2 image.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Reviewed-by: Max Reitz <mreitz@redhat.com >
Message-id: 20170628120530.31251-20-vsementsov@virtuozzo.com
[mreitz: Always assign ret in store_bitmap() in case of an error]
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:58 +02:00
a88b179fdb
block: introduce persistent dirty bitmaps
...
New field BdrvDirtyBitmap.persistent means, that bitmap should be saved
by format driver in .bdrv_close and .bdrv_inactivate. No format driver
supports it for now.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Message-id: 20170628120530.31251-18-vsementsov@virtuozzo.com
[mreitz: Fixed indentation]
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:58 +02:00
a0319aacd4
block/dirty-bitmap: add autoload field to BdrvDirtyBitmap
...
Mirror AUTO flag from Qcow2 bitmap in BdrvDirtyBitmap. This will be
needed in future, to save this flag back to Qcow2 for persistent
bitmaps.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Message-id: 20170628120530.31251-16-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:58 +02:00
1b6b0562db
qcow2: support .bdrv_reopen_bitmaps_rw
...
Realize bdrv_reopen_bitmaps_rw interface.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Reviewed-by: John Snow <jsnow@redhat.com >
Reviewed-by: Max Reitz <mreitz@redhat.com >
Message-id: 20170628120530.31251-15-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:58 +02:00
d1258dd0c8
qcow2: autoloading dirty bitmaps
...
Auto loading bitmaps are bitmaps in Qcow2, with the AUTO flag set. They
are loaded when the image is opened and become BdrvDirtyBitmaps for the
corresponding drive.
Extra data in bitmaps is not supported for now.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Reviewed-by: Max Reitz <mreitz@redhat.com >
Reviewed-by: John Snow <jsnow@redhat.com >
Message-id: 20170628120530.31251-12-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:58 +02:00
88ddffae8f
qcow2: add bitmaps extension
...
Add bitmap extension as specified in docs/specs/qcow2.txt.
For now, just mirror extension header into Qcow2 state and check
constraints. Also, calculate refcounts for qcow2 bitmaps, to not break
qemu-img check.
For now, disable image resize if it has bitmaps. It will be fixed later.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com >
Reviewed-by: Max Reitz <mreitz@redhat.com >
Reviewed-by: John Snow <jsnow@redhat.com >
Message-id: 20170628120530.31251-9-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com >
2017-07-11 17:44:57 +02:00
Vladimir Sementsov-Ogievskiy