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Re: Attempt to Access Beyond End of Device

To: willis@xxxxxxxxxxxxxxxx
Subject: Re: Attempt to Access Beyond End of Device
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Mon, 26 Apr 2010 15:54:10 -0500
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <26132521.11272313223159.JavaMail.root@wombat>
References: <26132521.11272313223159.JavaMail.root@wombat>
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On 04/26/2010 03:20 PM, willis@xxxxxxxxxxxxxxxx wrote:
> Federico Sevilla III wrote: "It wasn't an XFS-centric problem, after
> all"
> 
> Adding Federico's comment... Some Adadptec Controller firmware
> versions will pass incorrect device parameters to the linux kernel.
> The kernel log output misled me to believe is was a corrupt
> filesystem or partition map, however it was just an adaptec bug.
> 
> Adaptac has a fix procedure for this at:
> http://ask.adaptec.com/scripts/adaptec_tic.cfg/php.exe/enduser/std_adp.php?p_faqid=16914

Thanks for the followup; we've seen this a couple times, and it
has always stumped me.

-Eric

>  Below is the my kernel's dmesg output. After following Adaptec's
> procedure, the errors went away and I was able to mount the
> filesystem and see all of my existing data. ----- mount: /dev/sda:
> can't read superblock Mount Error at /dev/sdj. Is filesystem
> realtime? Need a File System? attempt to access beyond end of device 
> sda: rw=0, want=YYYY, limit=XXXX I/O error in filesystem ("sda")
> meta-data dev sdj block 0xZZZZ ("xfs_read_buf") error 5 buf count
> 512 XFS: size check 2 failed -----
> 
> Regards,
> 
> Michael Willis
> 
> 
> 
> 
> 
> -- Eric Sandeen wrote : Federico Sevilla III wrote:
>> Hi,
>> 
>> We've set up Debian GNU/Linux 4.0 "Etch" on an IBM x3400 machine
>> with two 73.4GB SAS hard drives in hardware RAID 1 with a
>> battery-backed cache. We are using the stock Debian 2.6.18-4-686
>> kernel.
> 
> can you send along the results of:
> 
> # xfs_db -r -c "sb 0" -c "print" /dev/sda8?
> 
> and # cat /proc/partitions
> 
> ... and does the hardware raid have a funky sector size?
> 
> -Eric
> 
> 
> 
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