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Date:      Wed, 11 Oct 2006 09:06:34 +0200
From:      "Philippe Lang" <philippe.lang@attiksystem.ch>
To:        <freebsd-questions@freebsd.org>
Subject:   fsck problems under 6.0
Message-ID:  <6C0CF58A187DA5479245E0830AF84F421D1362@poweredge.attiksystem.ch>

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Hi,

I'm running a RAID 5, 6.0-RELEASE-p6 server, with multiple jails on it, more precisely 17 at the moment. It runs great, no problems at all until now, and even at that moment the server is fine.


I have just done an fsck, and the results frighten me: 



** Phase 2 - Check Pathnames

I have 3 "UNEXPECTED SOFT UPDATE INCONSISTENCY" errors, like:
---------------------------
UNALLOCATED  I=23364960  OWNER=www MODE=100644
SIZE=1084 MTIME=Oct 10 22:35 2006
FILE=/jails/j27/usr/home/www/data/tools/smarty/cache/%%08^081^081AA588%%mail.tpl
UNEXPECTED SOFT UPDATE INCONSISTENCY
REMOVE? no
---------------------------



** Phase 4 - Check Reference Counts

I have around 100 "UNREF FILE" errors, like:
---------------------------
UNREF FILE I=21409205  OWNER=88 MODE=100600 SIZE=0 MTIME=Jun  5 08:55 2006 CLEAR? no
UNREF FILE I=21409206  OWNER=88 MODE=100600 SIZE=0 MTIME=Jun  5 08:55 2006 CLEAR? no
UNREF FILE I=21481298  OWNER=88 MODE=100600 SIZE=0 MTIME=Jun  7 12:16 2006 CLEAR? no
---------------------------



** Phase 5 - Check Cyl groups
---------------------------
SUMMARY INFORMATION BAD
SALVAGE? no

BLK(S) MISSING IN BIT MAPS
SALVAGE? no

ALLOCATED FILE 23365029 MARKED FREE
ALLOCATED FILE 23365042 MARKED FREE
ALLOCATED FRAG 93343103 MARKED FREE
ALLOCATED FRAGS 93360560-93360564 MARKED FREE
---------------------------



As I said, I never had any problem with the server, no power interruption or whatever. I never "played" with tunefs. It uses the 6.0-RELEASE configuration.



Now the questions:


1) Is that a serious problem?

2) What can be the cause of that? Faulty hardware, or software? I'm running an INTEL SRCU24L raid card, and I think I read posts mentioning problems with some iir driver version, under medium to high load.

3) How do I correct that? Booting single-mode, fsck -f? Is there a danger my whole filesystem gets broken?

4) Should I upgrade to 6.1 maybe?


Thanks for reading!


---------------
Philippe Lang
Attik System


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