[ale] Ugh! Kernel panic when loading ext3 modules in RHAS2.1 w/kernel 2.4.9-e30.smp

[Dow Hurst]

So, unless you can force the RAID card to release even when the slave 
has crashed, you will have cut power to the slave completely, right?  
The last operation of the slave locks the RAID card in a write mode 
which won't let go?  Just wondering what you've found.  I am not 
familiar with RAID cards but am looking thru the O'Reilly book on Linux 
RAID.
Dow


Jonathan Glass wrote:

>On Mon, 2003-12-29 at 16:42, Dow Hurst wrote:
>  
>
>>That is definitely not HA, for sure.  You'll have to roll back, I 
>>guess?  Have you tried using Reisferfs or XFS?  Just curious,
>>Dow
>>
>>
>>Jonathan Glass wrote:
>>222
>>    
>>
>>>Great!  I updated my HA-cluster master-node to the latest kernel
>>>(2.4.9-e30.smp) available from RHN, and as soon as it mounts the ext3
>>>file systems, it kernel panics.  This is all the error message I have.
>>>
>>>Message from syslogd at biolab2 at Mon Dec 29 15:20:52 2003 ...
>>>biolab2 kernel: Assertion failure in unmap_underlying_metadata() at
>>>buffer.c:1542: "!buffer_jlist_eq(old_bh, 3)"
>>>
>>>Sometimes I hate servers!
>>>
>>>Jonathan Glass
>>>      
>>>
>
>It appears that the slave node went down ungracefully, and locked up the
>shared SCSI storage.  When the master node came back online, and tried
>to start the "cluster" service, it couldn't get full access to the
>partition b/c the slave's RAID card had control.  I killed the slave
>machine, rebooted the master, and everything cleared up.  Weird.
>
>I was afraid it was related to my trying to configure NFS & NIS to use
>ports 5000-5004, but I don't think so now.  Time to dig through the log
>files to see when this happened, and why.
>
>Thanks for the tips.
>  
>

-- 
__________________________________________________________
Dow Hurst                  Office: 770-499-3428            *
Systems Support Specialist    Fax: 770-423-6744            *
1000 Chastain Rd. Bldg. 12                                 *
Chemistry Department SC428  Email:   dhurst at kennesaw.edu   *
Kennesaw State University         Dow.Hurst at mindspring.com *
Kennesaw, GA 30144                                         *
************************************************************
This message (including any attachments) contains          *
confidential information intended for a specific individual*
and purpose, and is protected by law.  If you are not the  *
intended recipient, you should delete this message and are *
hereby notified that any disclosure, copying, distribution *
of this message, or the taking of any action based on it,  *
is strictly prohibited.                                    *
************************************************************