We've been doing some initial testing - looking at using RAID-1 mirroring
with md, but have not had much luck so far.
We've set up a raid1 device with two separate IDE drives on separate
controllers (on-board).
To simulate a drive failure, we've cut the power to one drive while the raid
set is being used. After a long timeout, the kernel sees the failure on hdd
and then md says that the drive has failed and will continue in degraded
mode.
The problem is - it doesn't continue, it sits there and keeps trying to
access that drive again and again every few seconds. The I/O operation that
was taking place against /dev/md0 never resumes (it stopped as soon as the
power was pulled on that one drive.)
If we put the power back on to that drive, it breaks loose and starts
running in degraded mode.
This is with the 990128-2.2.0 patch applied to the 2.2.2 kernel w/ fixes.
Is this a functionality issue (i.e. does md raid1 not support continuing to
run after a drive failure if there are no spares?), or is something wrong.
I can possibly upgrade to a new kernel release if absolutely necessary.
-- Nathan
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Nathan Neulinger EMail: [EMAIL PROTECTED]
University of Missouri - Rolla Phone: (573) 341-4841
Computing Services Fax: (573) 341-4216
