On Sat, 25 Mar 2000, Jeff Hill wrote:
> Which is currently the most stable kernel that supports new-style RAID?
>
> My system hangs for 30 seconds to 5 minutes several times a day using a
> vanilla kernel 2.2.14 from ftp.kernel.org with a 2.2.14 RAID patch from
> Redhat on my Debian (Potato version) server. When the system hangs, it
> doesn't crash and it responds to a few basic requests ('ls' for example)
> but nothing else (not even 'ls -l'). Then, it proceeds to fill the
> request. I've looked through the dmesg, system and
> kernel logs and have found nothing out of the ordinary. I've tried
> kernel 2.2.10 with similar results.
Is it a SMP system ?
> My mdstat reads:
>
> Personalities : [linear] [raid0] [raid1] [translucent]
> read_ahead 1024 sectors
> md0 : active raid1 sdb2[1] sda2[0] 8739264 blocks [2/2] [UU]
> unused devices: <none>
Disable translucent mode ! It's not intended to be used yet.
I wouldn't know if this can cause you any trouble, but translucent
mode is definitely not something you want to have turned on.
> At the same time I updated the system to Debian Potato, the new kernel
> and RAID-1, I also added an Adaptec 2940U2W SCSI controller and a
> matching pair of Cheetah drives, but nothing in the new hardware seems
> problematic. I've got the Redhat lilo installed so that I boot the RAID
> from root, and /boot directories on both disks are on separate, non-raid
> partitions.
>
> I've been using Linux for several years, but I'm unable to determine
> where the problem is -- I just suspect the kernel. Any suggestions on
> the most stable kernel or on how to troubleshoot this appreciated.
>
> Also, is there any searchable archive of the linux-raid list? Wish I
> would have found this list _before_ I built my raid.
It sounds pretty strange what you're seeing. It would be very interesting
to see if you could reproduce your problems without RAID. You're running
RAID-1, so you should be able to just don't start the RAID devices, and
then mount one of the mirrors disregarding the /dev/mdX devices.
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