Re: RAID and NFS exports (Possible Data Corruption)

From: David Malone (dwmalone_at_maths.tcd.ie)
Date: 07/15/03

  • Next message: Martin: "Re: USB device programming with ugen [Solved]" 
    Date: Tue, 15 Jul 2003 17:20:06 +0100
To: Sumit Shah <shah@ucla.edu>

    On Tue, Jul 15, 2003 at 06:26:24AM -0700, Sumit Shah wrote:
    > Here is a message I sent to freebsd-questions and I was hoping I could
    > get some help debugging this.

    It seems very unlikely that restarting mountd cound cause an error
    like:

    >ad4: hard error reading fsbn 242727552

    The error means that that the disk said that there was an error
    trying to read this block. You say that when you rebooted that the
    controler said a disk had gone bad, so this would sort of confirm
    this. (I could believe that restarting mountd might upset raid stuff
    if there were a kernel bug, but it seems very unlikely it could
    cause a disk to go bad.)

    My best guess would be that you have a bad batch of disks that
    happen to have failed in similar ways. It is possible that restarting
    mountd uncovered the errors, 'cos I think mountd internally does
    a remount of the filesystem in question and that might cause a chunk
    of stuff to be flushed out on to the disk, highlighting an error.

    (I had a bunch of the IBM "deathstar" disks fail on me within the
    space of a week or so, after they'd been in use for about six
    months.)

            David.
    _______________________________________________
    freebsd-hackers@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
    To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"

  • Next message: Martin: "Re: USB device programming with ugen [Solved]"

    Relevant Pages

    • RE: Boot Problems, Keeps Restarting
      ... try booting to windows recovery console and running "diskpart", ive found that sometimes the win 98 startup disk will not work correctly. ... > restarting, but never opened to a window, and restarted. ... > the partition, but could not create a new partition. ...
      (microsoft.public.windowsxp.general)
    • Re: SASSER?
      ... | tried restarting and I got the error: stop:c000021 Image ... Then it would get to the windows screen ... Could be a user profile problem or a DLL ... disk corruption since that FON font error is a sign of such. ...
      (microsoft.public.security.virus)
    • Re: The "Restart" Apple menu option
      ... logging out, shutting down or restarting. ... I am neither saying OSX is perfect, ... am I saying the various flavors of Windows are trash, ... This happens when a disk is not connected but the OS "thinks" it so it's ...
      (comp.sys.mac.advocacy)
    • Re: Clear Tomcat Classloader cache?
      ... classes, which has been requested once, in the ram. ... not read the file from disk, they are using the information in the ... without rebooting the server or restarting the webapp. ... Tomcat Manager and restart your context. ...
      (comp.lang.java.programmer)
    • Re: BSoD
      ... I burned the memtest.iso onto a disk and put it in my disk drive then ... screen detailing what looked like my usb ports and similar items. ... I havent seen anything that looks like the screenshots on the Memtest ... after restarting my computer without the disk it had become very ...
      (microsoft.public.windowsxp.help_and_support)