Don't rely on software RAID on the Compaqs!!!! Unplugging active disks causes a 100 % repeatable kernel crash (total lockup). As far as I can tell it's caused by bugs in the NCR driver This is with kernel 2.0.36 & Compaq Proliant 1600. -- Email: [EMAIL PROTECTED] Office tel: +46 46 37 01 24 Cellular tel: +46 707 30 37 36 Fax: +46 46 13 12 72 Louis Mandelstam wrote: > > On Wed, 13 Jan 1999, Russell Brown wrote: > > > >Reasons TO USE RAID for swap - if the darn swap partition goes bad, > > >the kernel chokes. With a raid swap partition, a bad disk will not > > >bring down the system. Guess how I found out!!! > > > > Except that the lower level SCSI drivers* seem to croak when a disk goes > > bad and lockup the system anyway :-( > > > > * - aic7xxx in my case. > > It seems some Linux SCSI drivers handle this, and some don't. > > I've a Proliant 6500R using the SCSI hot-swap tray and onboard NCR53C875, > and hot-removing/adding seems to work just nicely. > > I didn't have opportunity to test by actually pulling drives out of the > SCSI tray yet however, but echoing to appropriate command to > /proc/scsi/.. had the desired effect of shutting down a disk, causing md > to rebuild onto a hot spare. Removing the shut down drive at this point > works fine, and I can re-add it later, spin it up using echo ... > > /proc/scsi/... and make it part of the RAID again. > > ------------------------------------------------------------------------- > Louis Mandelstam # man 8 consulting -o) > email: [EMAIL PROTECTED] System administration contracting /\\ > Mobile: +27-83-289-0310 'whois LM497' for current contact info _\_v > ---------------------[ Penguin Cloning Specialist ]---------------------- > > - > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to [EMAIL PROTECTED]
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