buffer i/o error on device sr0

Issues related to hardware problems
BubikolRamios
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buffer i/o error on device sr0

Postby BubikolRamios » 2011/10/15 23:19:03

Server ok like 2 years, now:

memory for crash kernel (0x0 to 0x0 ) not within permiseable range
buffer i/o error on device sr0, logical block 176935
buffer i/o error on device sr0, logical block 176935
buffer i/o error on device sr0, logical block 176935
buffer i/o error on device sr0, logical block 176935
buffer i/o error on device sr0, logical block 176935
buffer i/o error on device sr0, logical block 176935
buffer i/o error on device sr0, logical block 176935
buffer i/o error on device sr0, logical block 176935

if I put in live CD, it goes beyond that, othervise not.

Please suggest.

I gues running fsck in rescue mode should do something to solve the thing ?

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TrevorH
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Re: buffer i/o error on device sr0

Postby TrevorH » 2011/10/16 00:22:05

/dev/sr0 is your CD/DVD drive.

BubikolRamios
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Re: buffer i/o error on device sr0

Postby BubikolRamios » 2011/10/16 01:03:31

Thanks for replay.

Yeah,right, was saving some data via live cd, obviously with some errors too.

So, the real thing is:

end request; i/o error, dev sdb sector 549222599
end request; i/o error, dev sdb sector 549222599
end request; i/o error, dev sdb sector 549222599
....

and then some errors, related to this, I think, on crontab
and then:

end request; i/o error, dev sdb sector "another sector"


....

The whole thing might not even come to that, it may stop at:

...
/dev/volgroup00/logvol00 clean ...
boot: recovering journal
boot:clean ...
/dev/volgroup01/logvol00 recovering journal
/dev/volgroup01/logvol00 clean ...
...
enabling /etc/fstab/ swaps FAILED


EDIT: that is the case now, on every reboot.

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TrevorH
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Re: buffer i/o error on device sr0

Postby TrevorH » 2011/10/16 01:39:29

Yep, your second disk is dead or dying. Boot with the live CD and remove all references to it from /etc/fstab (comment them out!) and see if you have enough of a system remaining to boot up!

BubikolRamios
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Re: buffer i/o error on device sr0

Postby BubikolRamios » 2011/10/16 01:53:18

fstab file:

LABEL=/boot /boot ext3 defaults 1 2
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
/dev/VolGroup00/LogVol00 / ext3 defaults 1 2
/dev/VolGroup01/LogVol00 /mnt/sda2 ext3 defaults 1 2


I know that there is nothing important on volgroup01
but if that is/will be dead, realy strange. Almost not used.
Also contence there not system related, only backups.

BubikolRamios
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Re: buffer i/o error on device sr0

Postby BubikolRamios » 2011/10/16 08:23:26

if I comment out lastline:
#/dev/VolGroup01/LogVol00 /mnt/sda2 ext3 defaults 1 2

I get:

/dev/volgroup00/logvol00 clean ...
boot:clean
/dev/volgroup01/logvol00 clean
...
enabling /etc/fstab/ swaps FAILED

All clean ? So all ok ? Should "/dev/volgroup01/logvol00 clean" appear here at all, as I commented it out in fstab file ?

pschaff
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buffer i/o error on device sr0

Postby pschaff » 2011/10/16 23:10:00

That seems to be the LVM kernel driver checking available volumes, and is unrelated to the mount status.

BubikolRamios
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Re: buffer i/o error on device sr0

Postby BubikolRamios » 2011/10/17 10:47:19

if I run fsck on anything I get

WARNING: couldn't open /etc/fstab: no such file or directory


It does check then anyway.

I rad somewhere that renaming /etc/fstab to something else & rebooting should make a difference.
I susspect so since I noticed that fstab file gets changed by reboot.

Wil try that ...

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TrevorH
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Re: buffer i/o error on device sr0

Postby TrevorH » 2011/10/17 10:51:15

I susspect so since I noticed that fstab file gets changed by reboot.


It should not be changed by reboot and renaming it is a bad idea(tm) unless you actually want to render your system unbotoable

BubikolRamios
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Re: buffer i/o error on device sr0

Postby BubikolRamios » 2011/10/17 11:29:50

It does not do anything anyway (renaming)

the system boot stops at same point:

enabling /etc/fstab/ swaps FAILED


Is there any smart thing I can do regarding (observed at fsck)

WARNING: couldn't open /etc/fstab: no such file or directory


I allso noticed, running live cd that it prints out during boot

Code: Select all

no fstab.sys, loading system defaults


Running fsck gave me:

Error reading block 13145561 (Attempt to read block from filesystem resulted in short read) while reading indirect blocks of inode 6554425. Ignore error? yes
Force rewrite? yes
... next block


stopped that,

running fsck -c -c /dev/sda1 produced nothing that would suggest anything is wrong

running fsck -c -c logicalvolume now.
testing with random pattern ..., it hanged at certain point.
I guess I have to do, as last chance:
fsck -c logicalvolume

m'I close to say goodbye to my disc & reinstall OS ?