Re: background fsck can be dangerous!

From: Brian Fundakowski Feldman (green_at_freebsd.org)
Date: 06/30/05

  • Next message: Daniel O'Connor: "Re: 5.4 Installer + Promise FT100TX2 = Loader crash" 
    Date: Thu, 30 Jun 2005 02:06:12 -0400
To: Steven Hartland <killing@multiplay.co.uk>

    On Wed, Jun 29, 2005 at 03:12:37PM +0100, Steven Hartland wrote:
    > I've not had a single crash / power outage that background fsck has
    > been able to deal with. 90% of the time the machine will fail to even
    > boot to single user mode :(

    You should turn write caching off on your drives.

    > Steve
    > ----- Original Message -----
    > From: "Niki Denev" <ndenev@icdsoft.com>
    >
    > >I want just to share my last experience with the combination of
    > >power failure + background fsck. After the power returned and the
    > >machine booted, it sheduled background fsck after 60 seconds, but
    > >at this point most of the services were already started, and some of them
    > >seemed to rely on files that were probably in unclean state before the
    > >check.
    > >This unfortunately leaded to some lost email...after the fsck completed,
    > >everything runs ok, but i have now set background_fsck to NO in rc.conf.
    > >
    > >Here is a sad sample from my qmail log file :
    > >@4000000042c1badc24fc21cc delivery 1:
    > >success:
    > >/libexec/ld-elf.so.1:_Shared_object_"libpq.so.3"_not_found,_required_by_"dspam"/did_0+0+1/
    > >@4000000042c1badc24fff25c status: local 2/30 remote 0/20
    > >@4000000042c1badc250151ec delivery 4:
    > >success:
    > >/libexec/ld-elf.so.1:_Shared_object_"libpq.so.3"_not_found,_required_by_"dspam"/did_0+0+1/
    > >@4000000042c1badc2502bd34 status: local 1/30 remote 0/20
    > >@4000000042c1badc25050ef4 end msg 23982
    > >@4000000042c1badc2508b0a4 delivery 2:
    > >success:
    > >/libexec/ld-elf.so.1:_Shared_object_"libpq.so.3"_not_found,_required_by_"dspam"/did_0+0+1/
    > >@4000000042c1badc250a9cd4 status: local 0/30 remote 0/20
    > >@4000000042c1badc250c7d4c end msg 24087
    > >@4000000042c1badc2510942c end msg 24040

    The filesystem looks the same before, during, and after background
    fsck runs, other than the free space information. 

    -- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\
_______________________________________________
freebsd-stable@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
  • Next message: Daniel O'Connor: "Re: 5.4 Installer + Promise FT100TX2 = Loader crash"