EXT2-fs kernel panic crashes

EXT2-fs kernel panic crashes

Post by Jeff Simmo » Fri, 20 Oct 1995 04:00:00



After a lot of screwing around, I called Connor to get a replacement for my
1 gig hard drive, which I though was going.  They told me that the Fast
SCSI 2 specs require AT LEAST ONE FOOT of ribbon cable between each of my
SCSI devices.  New longer cable, and no more kernel panics.





>> * From: trink%/etc/HOSTNAME (Trink Andreas)


>>: My Linux system has started crashing about once or twice a day, never in any
>>: particular pattern.  It always starts with the message:

>>: Kernel panic: EXT2-fs panic (device 8/17):  ext2_read_inode:  unable to read
>>: inode block -inode=????, block=?????

>>: The question marks are always different numbers. Read is sometimes write.
>>: The damage to the file system reported by e2fsck is always different, also.

>>: I'm running kernel 1.2.11, and using a DPT 2120 SCSI controller on two
>>: hard drives and a CDROM.

>>: Anybody have any ideas?

>>I get the same message some times the day, but I have an idea why: My harddisc
>>seams to be a little bit broken, that means, the harddisc switchs off (you
>>hear the noise) and immediatly after it switchs on (you hear the noise also).
>>Thats takes approx. 10 secs. During this time there is no harddisc available
>>and if the kernel wants to read or write a block, it is'nt possible and
>>results into a kernel panic message.

>I had the same problem, except that this didn't result in a kernel panic;
>instead it resulted in the process being put in an uninterruptible sleep.
>Usually, the process that bit it was syslogd...or init.  Which made it
>difficult to bring the system down properly....

>The solution (for me):  Jiggle the HD's power cable.  Mine was just a LITTLE
>bit loose, so it was on occasion breaking contact, causing the drive to power
>down.  I re-seated it, and haven't had any problems since.

>/sj/

>Scott Johnson --  Graduate Slave, ECE Department, Oregon State University
>Check out my new (but unfinished) Web page--http://www.ece.orst.edu/~johnsos
>-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>Philosophy is useless, theology is worse.
>                                                    -Dire Straits

--

 
 
 

1. EXT2-fs kernel panic crashes

: My Linux system has started crashing about once or twice a day, never in any
: particular pattern.  It always starts with the message:

: Kernel panic: EXT2-fs panic (device 8/17):  ext2_read_inode:  unable to read
: inode block -inode=????, block=?????

: The question marks are always different numbers. Read is sometimes write.
: The damage to the file system reported by e2fsck is always different, also.

: I'm running kernel 1.2.11, and using a DPT 2120 SCSI controller on two
: hard drives and a CDROM.

: Anybody have any ideas?
: --

I get the same message some times the day, but I have an idea why: My harddisc
seams to be a little bit broken, that means, the harddisc switchs off (you
hear the noise) and immediatly after it switchs on (you hear the noise also).
Thats takes approx. 10 secs. During this time there is no harddisc available
and if the kernel wants to read or write a block, it is'nt possible and
results into a kernel panic message.

A solution to solve this problem is to set a timeout. Whithin this timeout
the kernel tries to read or write its block several times, and after this
timeout the kernel prints the kernel panic message above. This solution
would make Linux more robust against hardware failure. (DOS is in this
case better than Linux. :-(  DOS waits until the harddisc is available
again)

My question: Is there such a timeout? How can I set it?
             Is there a patch for it? ...

Andi

------------------------------------------------------------------------
 Trink Andreas                    | Tel: (++43) 316-873-7456
                                  | Fax: (++43) 316-463697



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                             Sapere aude!
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