Hi there,
Hopefully you will be able to help with a problem (or at least point me at fixing) that I am suffering with my jfs format drives.
We are running a two jfs drives on Dell Poweredge 2850 machines. The operating system is SuSE Linux Enterprise 9.1 x_64 using a 2.6.5 kernel. Our jfs drives are a couple of Dell PoweRaid RAID array, operating on RAID 5 across 11 discs. The RAID is setup in hardware, not software, so in effect the server sees two logical drives (which matches each of the two RAID arrays). The RAID is approximately 980G (just short of 1TB), which I assume that jfs should have no problems in addressing. The SCSI card is a Dell PERC 4s/i card with two ports, going to each of the RAID arrays. Fdisk doesn't seem to have a partition for jfs, so x083 (Linux) has been used. According to the fdisk manual, x035 (unknown) is jfs, but it seems that this partition is no longer supported by the version of fdisk on this kernel.
The problem is that jfs drives works correct for a week or so, and then suddenly we start getting I/O errors on both arrays. When we try and remount the drives (firstly unmounting them and remounting using mount -o remount) or restarting the servers, we are getting I/O Superblock errors; the drive then becomes unreadable. This is the 2nd time this has occurred, so we have now done a hardware audit using Dell's diagnostic discs. No hardware fault has been found, so I am coming back to the conclusion that there is a problem with the format or the way that jfs is handled by the Dell 2850 Poweredge / PERC 4si card. I don't really want to reformat the drives again.
I can't find any reference to this problem, and feel loathed to going back to ext3.
Best Wishes
Max Eaves
Max Eaves | System Specialist MOMS
Red Bee Media formerly BBC Broadcast
ECA | Broadcast Centre | 201 Wood Lane | London W12 7TP
T: +44 (0) 208 00 83491 extension
M: +44 (0) 7973 870275
E: mailto:[EMAIL PROTECTED]
http://www.redbeemedia.com
http://www.bbc.co.uk/
This e-mail (and any attachments) is confidential and may contain
personal views which are not the views of the BBC unless specifically
stated.
If you have received it in error, please delete it from your system.
Do not use, copy or disclose the information in any way nor act in
reliance on it and notify the sender immediately. Please note that the
BBC monitors e-mails sent or received.
Further communication will signify your consent to this.
