I have a DELL PowerEdge 2300 (AIC 7890 + AIC 7860) server with a 6
slot hot-plug backplane, 4 ultra2-wide drives connected to the
7890. I'm running Linux kernel version 2.0.35 with aic7xxx 5.1.2 and
raid0145-19981005 patches, with 3 of the drives configures as a RAID-5 
device (md0 : active raid5 sdd2[2] sdc2[1] sdb2[0] 17510656 blocks
level 5, 32k chunk, algorithm 2 [3/3] [UUU]).

If I sync the filesystems and disconnect one of the RAID drives to
simulate a drive breakdown, the entire SCSI chain hangs, and the only
way to recover is to reboot the system. The RAID itself remains
functional, as when I reconnect the drive, it will start to
reconstruct itself in the background. However, I'd like to know that I 
could replace a broken drive without a system restart, as that's what
the hot-plug backplane is there for.. :/

-- 
Murphy's Law only fails when you try to demonstrate it.
Osma Ahvenlampi <[EMAIL PROTECTED]>

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