Hello every ZFS gurus
I've been using a ZFS server for about one year now (for rsync-based disk backup purpose). The process is quite simple : I backup each fs using rsync. After each filesystem backup, I take a zfs snapshot to freeze read-only the saved data. So I end up with a zfs snapshot for each backup set (one per day). When I do a zfs list -r, I can see all the snapshots with the size occupied by each snapshot. Something proportional to the number of disks blocks that changed since the previous snapshot. I'm surprised to see that the last snapshot is never empty when the snapshot is taken automatically by the backup script. But if I take a snapshot several hours after the backup script has run, the snapshot size is 0. Is there some data missing in the snapshot if I take it right after writing to the filesystem ? Should I wait for some time, so that the zfs buffer cache is written to disk ??? If so, how long ? Has anyone experienced this kind of symptoms ? Thank you for your help. This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
