fssnap: ioctl: error 16: Device busy

From: Chris Hoogendyk (hoogendyk_at_bio.umass.edu)
Date: 05/31/05

  • Next message: jason kappy: "BSM auditing error." 
    Date: Tue, 31 May 2005 14:25:35 -0400
To: Sun Managers List <sunmanagers@sunmanagers.org>

    during debugging of a script, I interrupted it with a control c. that
    was last Friday. since then, I have not been able to remove the snap
    shots that were created. I get:

    # fssnap -F ufs -d /
    fssnap: ioctl: error 16: Device busy

    I have done a variety of things trying to figure this out, including
    googling, man pages, and sunsolve. First, the information:

    # /usr/lib/fs/ufs/fssnap -i
    Snapshot number : 0
    Block Device : /dev/fssnap/0
    Raw Device : /dev/rfssnap/0
    Mount point : /
    Device state : active
    Backing store path : /export/home/scratch <UNLINKED>
    Backing store size : 3328 KB
    Maximum backing store size : Unlimited
    Snapshot create time : Fri May 27 16:13:35 2005
    Copy-on-write granularity : 32 KB
    Snapshot number : 1
    Block Device : /dev/fssnap/1
    Raw Device : /dev/rfssnap/1
    Mount point : /export/home
    Device state : active
    Backing store path : /var/scratch <UNLINKED>
    Backing store size : 2144 KB
    Maximum backing store size : Unlimited
    Snapshot create time : Fri May 27 16:13:50 2005
    Copy-on-write granularity : 32 KB

    # df -k
    Filesystem kbytes used avail cap Mounted on
       <snip>
    /dev/fssnap/0 8404388 1672809 6647536 21% /tmp/.rlg.YZaGmz/.rlg.YZaGmz
    /dev/fssnap/1 984861 1693 924077 1% /tmp/.rlg.BkaOpz/.rlg.BkaOpz

    I've tried several variations with lsof checking for processes that
    might have an open file on the snapshot or have the snapshot device or
    mount point open. All come up blank.

    I've also looked for zombie processes that might be connected with the
    ufsdump commands that were running. As I recall, I had to kill the
    ufsdump last Friday. There is nothing running now related to that and
    there are no processes that began on Friday except devfsadmd. I'm not
    sure I get that. On my other system the date on that process matches the
    system boot date. This system was booted several weeks ago, but the
    devfsadmd process date is Friday.

    I don't really want to reboot, because several critical network
    processes are running on this server. However, if no one can come up
    with a better idea, then I will reboot. Need backups.

    TIA

    ---------------

    Chris Hoogendyk

    -
        O__ ---- Systems Administrator
       c/ /'_ --- Biology Department
      (*) \(*) -- 140 Morrill Science Center
    ~~~~~~~~~~ - University of Massachusetts, Amherst

    <hoogendyk@bio.umass.edu>

    ---------------
    _______________________________________________
    sunmanagers mailing list
    sunmanagers@sunmanagers.org
    http://www.sunmanagers.org/mailman/listinfo/sunmanagers

  • Next message: jason kappy: "BSM auditing error."