Can we do differential backup instead of incremental backup using ufsdump in Solaris ?

Posted on 2008-11-13
Last Modified: 2013-12-27
Can we do differential backup instead of incremental backup using ufsdump in Solaris ?
Not the new file created or old file deleted, can't we do backup of a file if the old file was modified and updated.
Same the way rsync do ? Can we have this functionality in ufsdump ?
Question by:beer9
    LVL 4

    Assisted Solution

    ufsdump is designed to do only incremental backup,
    i'm not sure if you can do any diffential backup, but I guess you can try modifiying the
    /etc/dumpdates entries, as ufsdump uses this file to do incremental backup
    for every successful backup an entries with time and date is created in this file,
    check it out and let me know
    LVL 48

    Expert Comment

    How often do you do a full backup?  If you alternate between a level 0 and level 1 ufsdump, then you effectivvely have a differential backup.
    LVL 22

    Accepted Solution

    If you only use a single incremental backup level and use level 0 as the full backup, then you have differential backup. However, one thing to note is that ufsrestore never deletes a file, it only creates them. So, any file that is on your full backup will show up after the restore, even though that file may have been deleted after the full backup.
    LVL 40

    Assisted Solution

    ufsdump incremental backup does backup files that were changed since last backup date / time (on the lower level). rsync takes the changed blocks not the whole files

    Author Closing Comment


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