From: John McMonagle <johnm@advocap.org>
To: Bill Davidsen <davidsen@tmr.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Raid corruption problems.
Date: Sun, 24 Dec 2006 08:00:42 -0600 [thread overview]
Message-ID: <458E880A.7030400@advocap.org> (raw)
In-Reply-To: <45885C2A.40602@tmr.com>
Bill Davidsen wrote:
> John McMonagle wrote:
>
>> Have a raid1 backup server that seems to get corrupted.
>> This is the 3rd time in about a year.
>> Have 2 other backup servers that were cloned from this one that have
>> no problems.
>>
>> Done a couple kernel upgrades recently.
>> Now has 2.6.18-2 kernel.
>> It's based on Debian sarge.
>>
>> It's a low end Intel server motherboard using ata_piix sata driver.
>> Have another mother board just like doing raid1 with sata drives that
>> has had no problems but it has a much lighter disk load.
>> smartctl has never shown any problems.
>> In /sys/block/md2 did
>> echo check > syncaction
>> No error messages but mismatch_cnt is 1152.
>> rc0/errors and rc1/errors are both 0.
>>
>> I'm guessing a hardware problem.
>> Any suggestions?
>
>
> Since memory is the easiest to test, I'd try memtest86+ for at least
> 12 hr. If this were PATA I'd suggest replugging the cables, but it's
> lower probability with SATA. Still, probably worth trying.
>
Ran Memtest86+ for over 18 hours with no errors.
Also have ecc ram.
I can look at the cables next time I'm there.
Doesn't sata do some sort of error checking over the cables?
Anything else to try?
Memtest86+ v1.65 | Pass 74% ############################
Pentium 4 (0.09) 2793 MHz | Test 61% #######################
L1 Cache: 16K 17135MB/s | Test #7 [Random number sequence]
L2 Cache: 1024K 15179MB/s | Testing: 112K - 1024M 1024M
Memory : 1024M 2059MB/s | Pattern: 189170f4
Chipset : Intel i875P (ECC : Detect / Correct) - PAT : Enabled
Settings: RAM : 199 MHz (DDR398) / CAS : 3-3-3-8 / Dual Channel (128 bits)
WallTime Cached RsvdMem MemMap Cache ECC Test Pass Errors
ECC Errs
--------- ------ ------- -------- ----- --- ---- ---- ------
--------
18:52:27 1024M 120K e820-Std on off Std 56 0
-----------------------------------------------------------------------------
--
John McMonagle
IT Manager
Advocap Inc.
next prev parent reply other threads:[~2006-12-24 14:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-15 19:52 Raid corruption problems John McMonagle
2006-12-19 21:39 ` Bill Davidsen
2006-12-24 14:00 ` John McMonagle [this message]
2006-12-25 19:06 ` Bill Davidsen
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