Messages in this thread | | | Date | Sun, 12 Apr 1998 02:37:08 +0100 (WEST) | From | "Manuel J. Galan" <> | Subject | Re: I want my old SCSI order back :-) |
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On 12-Apr-98 Michel wrote: > > Not having this problem now, but having run into similar annoying > problems when adding/removing partitions and harddrives in the past, > thus screwing up the fstab alltogether, perhaps it's an idea to have an > option that can force a specific order of devices - making newly added > devices always show up end the end of the /dev/hdS|/dev/sdS list... > Perhaps a pri/sec/mas/slv & scsiID <> /dev/-order mapping file in /etc that > performs a remount of devices once it's accessable, or a tag in the > partitiontable(s) somewhere ? >
The problem is worse because the change is in host adapter numbering so the schemes of host/id/lun won't work anymore.
scsi0 <---> scsi1
Suddenly an old partition in a backup disk drive attached to the second adapter (scsi1) becomes root filesystem !!!
We normally use two scsi hosts adapters in each server and normally they are same brand (to avoid the use of different drivers and because scsi host adpt. have a certain tendency to misbehave when they find other host adpt. of a different brand...). So this issue is going to happen in several computers. Besides that Linux-2.0 _and_ NT4 (I know, I know...) do behave as expected...There have been changes in device numbering when going from 2.0 to 2.1 (I recall the lp[01] issue) but this one is too drastic and fundamental and, IMHO, against what is normal when you _consciously specify in BIOS_ the order that you like or prefer. It would be the same that if suddenly scsi-id-0 became /dev/sdb and scsi-id-1 were /dev/sda against the conciously specified jumper position and breaking with the schematics of any other O.S.
I hope that default behavior become standard-2.0, and 'reverse' option remains for unusual or particular configurations, etc.
Otherwise the new PCI schematics seem to be a _real improvement_ and is nice to see that Linux keeps on going with the '>leading< edge of technology'
-- Manuel J. Galan manolow@step.es
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