I had the same problem when I mirrored my root drive. I thought it was just a
bug in RAIDing the root drive. All my other raid partitions went into degraded
mode fine using the same drives.
I have now just got a cronjob that does a dd each night to the second drive so
if the drive fails I only loose the days password changes.
As soon as I get my two new servers I will try and RAID the root drive again
and see what happens. I personally think its a kernel disk driver bug with the
RAID drivers.
"Neulinger, Nathan R." wrote:
> Well, I just went and set up the system with kernel 2.2.2 (without any extra
> patches) and raidtools-0.42, and it does the exact same thing.
>
> It just keeps on accessing the dead drive, with increasing sector numbers in
> the I/O error message - sort of like it is trying to continue to flush the
> buffer cache or something.
>
> With the 2.2.2 clean and 0.42 it looks like the raid1 module only detects
> the failure once, unlike with 0.90 and the current patches for 2.2.0 - with
> that combination, it keeps on detecting the failure.
>
> Has _ANYONE_ had any success with this with a 2.2.x kernel?!?!?
>
> It looks to me like if you lose an IDE bus that a drive is hooked up to - it
> will never recover, but if you just lose a drive, it will. This seems to be
> a major shortcoming, but might be livable. It looks like if I re-plug the
> drive back in, it stays degraded, but it does recover and keep on accessing
> the raid set.
>
> Is there any chance of getting this thing to recover from a bus failure?
>
> -- Nathan
>
> ------------------------------------------------------------
> Nathan Neulinger EMail: [EMAIL PROTECTED]
> University of Missouri - Rolla Phone: (573) 341-4841
> Computing Services Fax: (573) 341-4216
>
> > -----Original Message-----
> > From: Michael [mailto:[EMAIL PROTECTED]]
> > Sent: Sunday, June 06, 1999 2:14 PM
> > To: Nathan Neulinger
> > Cc: [EMAIL PROTECTED]
> > Subject: Re: Problems with raid1 - system unusable after drive failure
> >
> >
> > On Sun, 6 Jun 1999, Nathan Neulinger wrote:
> > > Are you referring just to problems with root raid, or all of the
> > > problems in general?
> >
> > Problems reported to the list in general. Primarily with
> > drive failure
> > (usually in test) and not being able to recover) or kernel crash.
> > >
> > > I'm not running raid on the root drive, just on a pair of
> > other drives
> > > on the system.
> > >
> > > Is it possible to get 0.42 built with 2.2.2?
> > >
> > Don't know, last raid system I have is kernel 2.0.33. I
> > haven't migrated
> > them because changes to raid in the kernel began at 2.0.34 or 5 as I
> > recall, and I can't afford to crash systems that work. I will
> > wait until
> > the raid software is a little more stable.
> >
> > Take a look at the diffs and give it a try.
> >
> > Michael
> >
