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тАО07-06-2010 07:40 AM
тАО07-06-2010 07:40 AM
I am getting follwoing error in /var/adm/dmessage
SCSI: Read error -- dev: b 31 0x050000, errno: 126, resid: 2048,
blkno: 8, sectno: 16, offset: 8192, bcount: 2048.
How to identify that which disk is giving the above error ?
How to solve the issue?
Solved! Go to Solution.
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тАО07-06-2010 08:23 AM
тАО07-06-2010 08:23 AM
SolutionFew good things to do here.
if the disk is offline:
ioscan
Look for NO_HW messages.
Better though is this thread, which tells you how to identify the disk.
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=956715
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тАО07-06-2010 08:29 AM
тАО07-06-2010 08:29 AM
Re: Getting SCSI Read error
check for 0x050000 in this output
$ ll /dev/dsk | grep 0x050000
you will find the disk
then do "ioscan", "diskinfo" and "dd" for disk is ok or not
Suraj
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тАО07-06-2010 08:34 AM
тАО07-06-2010 08:34 AM
Re: Getting SCSI Read error
One more things find the pdf for When Good Disks Go Bad and how to check.
Suraj
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тАО07-07-2010 06:42 AM
тАО07-07-2010 06:42 AM
Re: Getting SCSI Read error
I have executed following commands.
1)#ll /dev/dsk | grep 0x050000
brw-r----- 1 bin sys 31 0x050000 Apr 15 2008 c5t0d0
2)#ioscan -funC disk
Class I H/W Path Driver S/W State H/W Type Description
==================================================================================
disk 1 10/0/15/1.5.0 sdisk CLAIMED DEVICE COMPAQ BD036635C5
/dev/dsk/c3t5d0 /dev/rdsk/c3t5d0
disk 0 10/0/15/1.6.0 sdisk CLAIMED DEVICE FUJITSU MAJ3364MC
/dev/dsk/c3t6d0 /dev/rdsk/c3t6d0
disk 2 10/6/3/0.1.25.0.0.0.0 sdisk NO_HW DEVICE DGC C4700WDR5
/dev/dsk/c5t0d0 /dev/rdsk/c5t0d0
3)#diskinfo /dev/rdsk/c5t0d0
diskinfo: can't SIOC_INQUIRY /dev/rdsk/c5t0d0: No such device or address
My Questions:
1)Could you please tell me the cause for the issue?
2)How to solve?
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тАО07-07-2010 10:37 AM
тАО07-07-2010 10:37 AM
Re: Getting SCSI Read error
ioscan -fnC disk output
>>disk 2 10/6/3/0.1.25.0.0.0.0 sdisk NO_HW DEVICE DGC C4700WDR5
/dev/dsk/c5t0d0 /dev/rdsk/c5t0d
My Questions:
1)Could you please tell me the cause for the issue?
ioscan is showing NO_HW that means your disk is bad,
2)How to solve?
you need to replace the disk
Suraj
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тАО07-08-2010 03:20 AM
тАО07-08-2010 03:20 AM
Re: Getting SCSI Read error
I think NO_HW means "No disk / Not found".
So I believe the disk may be detached from this.
My Questions:
1)Is disk attached or not?
2)How to find whether it is local or LUN?
3)How to find the behind this, that why it is showing NO_HW?