On 09/10/2012 12:41 AM, MORITA Kazutaka wrote: > An incremental backup is useful to reduce backup data size. This > series adds support for vdi backup and restore commands. With theses > patches, we can create incremental backup files between snapshots as > follows. > > $ collie vdi create test 4G > $ echo snap1 | collie vdi write test 0 512 > $ collie vdi snapshot test -s snap1 > $ echo snap2 | collie vdi write test 0 512 > $ collie vdi snapshot test -s snap2 > > (create an incremental backup between snap1 and snap2) > $ collie vdi backup test -F snap1 -s snap2 /tmp/backup > $ collie vdi list > Name Id Size Used Shared Creation time VDI id Copies Tag > s test 1 4.0 GB 4.0 MB 0.0 MB 2012-09-10 01:27 7c2b25 1 snap1 > s test 2 4.0 GB 4.0 MB 0.0 MB 2012-09-10 01:28 7c2b26 1 snap2 > test 3 4.0 GB 0.0 MB 4.0 MB 2012-09-10 01:28 7c2b27 1 > > (restore vdi with the backup file) > $ collie vdi restore test -s snap1 /tmp/backup > restoring /tmp/backup... done > > (restored image is created as a new snapshot [id=3]) > $ collie vdi tree > test---[2012-09-10 01:27]-+-[2012-09-10 01:28]---(you are here) > `-[2012-09-10 01:29] > $ collie vdi list > Name Id Size Used Shared Creation time VDI id Copies Tag > s test 1 4.0 GB 4.0 MB 0.0 MB 2012-09-10 01:27 7c2b25 1 snap1 > s test 2 4.0 GB 4.0 MB 0.0 MB 2012-09-10 01:28 7c2b26 1 snap2 > s test 3 4.0 GB 4.0 MB 0.0 MB 2012-09-10 01:29 7c2b28 1 > test 4 4.0 GB 0.0 MB 4.0 MB 2012-09-10 01:29 7c2b29 1 > $ collie vdi read test 0 512 -s 3 > snap2 Applied, thanks. Yuan |