Date: Wed, 07 Sep 2005 13:08:12 -0500 From: Eric Anderson <anderson@centtech.com> To: Kris Kennaway <kris@obsecurity.org> Cc: questions@freebsd.org, Robert Watson <rwatson@freebsd.org>, Mikhail Teterin <mi+kde@aldan.algebra.com>, fs@freebsd.org Subject: Re: Strange case of filesystem corruption? Message-ID: <431F2C8C.3010203@centtech.com> In-Reply-To: <20050907174513.GA32771@xor.obsecurity.org> References: <200509051953.22337@aldan> <20050906114055.R51625@fledge.watson.org> <200509060931.33977@aldan> <20050906144512.T75104@fledge.watson.org> <431DB382.7000904@centtech.com> <20050907174513.GA32771@xor.obsecurity.org>
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Kris Kennaway wrote: > On Tue, Sep 06, 2005 at 10:19:30AM -0500, Eric Anderson wrote: > >>Robert Watson wrote: >> >>>On Tue, 6 Sep 2005, Mikhail Teterin wrote: >>> >>> >>>>On Tuesday 06 September 2005 06:51 am, Robert Watson wrote: >>>>= Have you recently experienced a system crash or hard reboot without >>>>proper >>>>= shutdown? >>>> >>>>According to dmesg.boot, this filesystem was flagged as "not properly >>>>dismounted" back then. The machine's uptime is currently 47 days and >>>>no background fskcs are running, of course. >>>> >>>>Yours analysis is, likely, correct then... I guess, the fix should be >>>>MFCed. (What about 6.0-release?) Thanks! >>> >>> >>>The change was made in HEAD before the 6.x branch, so it's currently in >>>RELENG_6. I fired off an e-mail to Kirk to ask about MFC'ing it to >>>RELENG_5, and will do so once I hear back, assuming he thinks there is >>>no reason not to. >>> >>>Do you have back logs to when bgfsck was running, btw? Normally it >>>should correct this sort of thing, suggestion that bgfsck exited without >>>correcting them, which is a little worrying. You may want to boot to >>>single user and fsck manually... >> >>I thought that having background_fsck="NO" in your rc.conf would make >>the partition get mounted even though it is unclean, and no fsck's would >>happen (I use this 'feature' right now, since doing bgfsck on a 2TB >>partition takes about 2 hours just to make the snapshot, which means >>filesystem activity is suspended for that time). > > > AFAIK, no, this just does a regular old fg fsck. You are absolutely right! My mistake - I had forgotten I did some other hacks to ignore those filesystems (so I can fsck manually)! Too bad the mksnap_ffs is so slow on large (>20GB) partitions.. :( Thanks for the correction! Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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