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DELL M910 with RedHat Linux 5.5 getting "Buffer I/O error on device sdd"

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Operating Systems Linux Red Hat DELL M910 with RedHat Linux 5.5 getting "Buffer I/O error on device sdd"
# 1  
Old 08-14-2011
DELL M910 with RedHat Linux 5.5 getting "Buffer I/O error on device sdd"
Dear Guru,

IHAC who is using Redhat Linux 5 on DELL M910.

When system bootup, it show "Buffer I/O error on device sdd" error message. Below is the "dmesg" output.

The scenario is:
If more external FC SAN disk LUN add, the device would change other name. So it will impact the raw device mapping which they set in "/etc/udev/rules.d/60-raw.rules".

Anybody met this issue before? Any tips for fixing this issue?

Thanks a lot for your help!

Best regards,
David Feng

===================================
#dmesg | grep sdd
SCSI device sdd: 2 512-byte hdwr sectors (0 MB)
sdd: Write Protect is off
sdd: Mode Sense: 97 00 00 08
SCSI device sdd: drive cache: write through
SCSI device sdd: 2 512-byte hdwr sectors (0 MB)
sdd: Write Protect is off
sdd: Mode Sense: 97 00 00 08
SCSI device sdd: drive cache: write through
sdd:[0x000053420001015e][INFO][UP][__mppLnx_scsi_done, 2682][4294689543] UP_done: A0C0P0L0,r=8000002,MPP_CHECK_CONDITION,sk=5,ASC/ASCQ=20/0,SN:13.
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
Dev sdd: unable to read RDB block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
sd 8:0:0:0: Attached scsi disk sdd
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
SCSI device sdd: 2 512-byte hdwr sectors (0 MB)
sdd: Write Protect is off
sdd: Mode Sense: 97 00 00 08
SCSI device sdd: drive cache: write through
sdd:[0x000053420001015e][INFO][UP][__mppLnx_scsi_done, 2682][4294757946] UP_done: A0C0P3L0,r=8000002,MPP_CHECK_CONDITION,sk=5,ASC/ASCQ=20/0,SN:1915.
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
Buffer I/O error on device sdd, logical block 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
Dev sdd: unable to read RDB block 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
end_request: I/O error, dev sdd, sector 0
[root@rac1 log]# 001015e][INFO][UP][__mppLnx_scsi_done, 2682][4294757946] UP_done: A0C0P3L0,r=8000002,MPP_CHECK_CONDITION,sk=5,ASC/ASCQ=20/0,SN:1915.
-bash: 001015e][INFO][UP][__mppLnx_scsi_done,: command not found
===================================
DELL M910 with RedHat Linux 5.5 getting "Buffer I/O error on device sdd"-error_virtual_cdromjpg
# 2  
Old 08-14-2011
Please post output from:

Code:
fdisk -l

and

Code:
df -h

and
Code:
cat /etc/fstab

# 3  
Old 08-14-2011
Thanks for quick response!

But I cannot get the output at the moment, would post the output tomorrow morning.

Do you have any work around for me to do some testing since tomorrow morning in my time is your midnight. Smilie

Regards,
David Feng
# 4  
Old 08-14-2011
I would hate to take a guess, without looking at the output of those commands. Also, what kind of SAN Storage array do you have and are you using any volume manager? Lvm is the native volume manager or you could use veritas.
Also these forums has always someone who can help in your timezone. Don'tworry about that Smilie. If I am not online,someone else will be able to help.
# 5  
Old 08-14-2011
Sure understood! Thanks!

The customer is using the Linux native LVM.
The SAN storage is HuaWei Symantec 5600T.

Will post more detail information tomorrow.

Regards,
David Feng
# 6  
Old 08-14-2011
Another useful output will be from sg3-utils, install these through yum if you are subscribed to RHN.
Once installed, paste output from :

Code:
sg_map -i

# 7  
Old 08-15-2011
Also, are you using multipathing drivers?
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