topic Re: error in syslog file in Operating System - HP-UX

error in syslog file

nagarjuna reddy — Wed, 24 Nov 2010 06:23:51 GMT

Hi all,

I am new to this area, pls. clarify my doubts regarding the errors in syslog file.
the errors are like this

vmunix: SCSI: Write error -- dev: b 31 0x011002, errno: 126, resid: 8192

vmunix: LVM: Failed to automatically resync PV 1f011002 error: 5

vmunix: SCSI: Read error -- dev: b 31 0x011002, errno: 126, resid: 1024

pls. reply me, these errors are critical to my database??

Re: error in syslog file

ani007 — Wed, 24 Nov 2010 06:37:34 GMT

Hi,
Looks like a disk problem.To get what disk it is do ll /dev/dsk/* | grep 0x011002.

dd if=/dev/dsk/cxtxdx of=/dev/null bs=4k
Check if it returns any error.
If there is any error then you need to log a H/W case with the vendor.

If this is a SCSI disk the you need to check the following also.

SCSI termination may be loose.
may be SCSI data cable problem.

If this disk is a part of an external storage device , worst case it cud be a problem with the slot of the stoarage device too.

Please don't forget to assign points.
Regards,
Ani

Re: error in syslog file

nagarjuna reddy — Wed, 24 Nov 2010 07:16:34 GMT

hi thanks for your reply,

i am not familiar with the Sys. Admin commands and all, i am a oracle dba, so pls. let me tell the commands to see the errors etc.

thanks and regards.

Re: error in syslog file

ani007 — Wed, 24 Nov 2010 07:25:58 GMT

#ll /dev/dsk/* | grep 0x011002

send me the o/p

Re: error in syslog file

nagarjuna reddy — Wed, 24 Nov 2010 07:35:05 GMT

i didn't get anything.

i typed the command

ll /dev/dsk/* | grep 0x11002

is it correct?

Re: error in syslog file

ani007 — Wed, 24 Nov 2010 07:37:16 GMT

you did a mistake

#ll /dev/dsk/* | grep 0x11002 --incorrect
it should be 0x011002

so fire this just copy paste
#ll /dev/dsk/* | grep 0x011002

Re: error in syslog file

nagarjuna reddy — Wed, 24 Nov 2010 07:41:52 GMT

hi

i got this

brw-r----- 1 bin sys 31 0x011002 Jun 28 2007 /dev/dsk/c1t1d0s2

Re: error in syslog file

ani007 — Wed, 24 Nov 2010 07:44:28 GMT

#dd if=/dev/dsk/c1t1d0s2 of=/dev/null bs=4k

send me the o/p

Re: error in syslog file

nagarjuna reddy — Wed, 24 Nov 2010 07:45:55 GMT

/dev/dsk/c1t1d0s2: Permission denied
dd: cannot open /dev/dsk/c1t1d0s2

Re: error in syslog file

ani007 — Wed, 24 Nov 2010 07:46:04 GMT

it can take some time to gv u the o/p

Re: error in syslog file

nagarjuna reddy — Wed, 24 Nov 2010 07:48:04 GMT

i am not the root user here, i think that is why it didn't permit me.

Re: error in syslog file

ani007 — Wed, 24 Nov 2010 07:50:12 GMT

#ioscan -fnC disk|grep c1t1d0s2
#diskinfo /dev/rdsk/c1t1d0s2

Re: error in syslog file

nagarjuna reddy — Wed, 24 Nov 2010 08:01:34 GMT

1. sh: ioscan: not found.

2. sh: diskinfo: not found

Re: error in syslog file

ani007 — Wed, 24 Nov 2010 08:05:34 GMT

May be you dont have the priviledge as you are not root user.what you can do provide the ctd no (c1t1d0s2) to Unix System Administrater, tell then to check this.They will able to issue the command.
If the dd command shows error then contact vendor.

Please assign points remember, this forum is supported by people DONATING their time and energies into solutions for you.you can assign points from 0-10 what ever you want
Regards,
Ani

Re: error in syslog file

nagarjuna reddy — Wed, 24 Nov 2010 08:10:07 GMT

Thanks Very Much

I really thankful to you, you are right i do not have the root privileges to get the required info. i surely give you the points. and pls. let me know, what are the possible issues i find any thing wrong.

regards,
nagarjuna

Re: error in syslog file

ani007 — Wed, 24 Nov 2010 08:22:47 GMT

Itâ s a h/w error ..Anytime can be happen..so when you will fire ioscan it should be good if it shows CLAIMED, if it shows no_hardware then you need to check.
Next from dd command o/p if it says input o/p error that means you have problem with the disk... then you need to log a case with vendor ...may be they will replace the disk. ALL of these not your task. This should be done by unix admin.as a DBA max. you can give them the CTD no (which u hv now).Even if you donâ t give them the ctd no then also they will able to find it from syslog...So don't waste ur time give me ctd no to them they will take necessary actions.

Regards,
Ani

Re: error in syslog file

Matti_Kurkela — Wed, 24 Nov 2010 09:25:09 GMT

From the previous commands, we know that "dev: b 31 0x011002" refers to /dev/dsk/c1t1d0s2.

Now, the only reason for a modern HP-UX disk to have "s2" at the end of the device name is when it is a system disk in an Itanium system.

> vmunix: LVM: Failed to automatically resync PV 1f011002 error: 5

This also refers to /dev/dsk/c1t1d0s2: 1f in hexadecimal = 31 in decimal.

Your system disk appears to have been mirrored, and this message indicates one of the mirror halves is not healthy.

If your database is not installed on vg00, the disk failure does not threaten your database directly... but unless the failed disk is replaced, the system will crash if the second half of the mirrored system disk fails too. And a system crash *would* threaten your database along with the rest of the system.

MK

Re: error in syslog file

madhuchakkaravarthy — Wed, 24 Nov 2010 16:04:34 GMT

hi

brw-r----- 1 bin sys 31 0x011002 Jun 28 2007 /dev/dsk/c1t1d0s2

===============================

execute

# ll /dev/*/group

and identify its particular vg . and do a vgdisplay -v vgname and check for current pv and open pv.

better talk to ur unix admin he might be giving some useful tips to u

regards

MC