>On Tuesday 12 April 2005 11:21 am, T. Horsnell wrote: >> I'm still flailing around trying to understand why hotplugging >> my SCSI disks doesnt work. 2.6.10 kernel, and the disks are seen >> OK after a system boot. However any disks which are plugged >> in with the system running, dont seem to generate any hotplug >> activity (checked by modifying /bin/hotplug script to write to >> a file when it runs). >> >> Should hotplugging SCSI disks work with 2.6.10 kernel? >> If not, can anyone suggest how I might make the system see >> the new disks without rebooting? I've tried kudzu with no >> success (should *that* have worked?) > >No. Unless you use special hardware (hot plug chassis with enclosure >management), the generic SCSI bus does not detect "plugs". In addition, hot >plugging can be dangerous. If there is data I/O going on on the SCSI bus at >the time you plug, you risk causing data corruption. USUALLY this will be >detected as a bus parity error, or other failures which get retried. But if >it doesn't... > >> Is there some other way to force a SCSI-bus scan? >> (I see ../drivers/scsi/scsi_scan.c in the kernel source) > >If you look at the SCSI how to (www.tldp.org), it makes reference to a >command, something like "echo 'magic incantation' > /proc/scsi/...". This >causes the specified device to be added to the internal tables. I don't >recall a rescan command, but I haven't looked in a while. If there is, it >would most likely be a similar echo command. It should be in the same SCSI >how to. > Thanks for this Rick. I'm making a start on moving about 100 SCSI disks from my Alpha system onto a dual Opteron one. Ive been hot-swapping SCSI on the Alpha for many years, so I guess I've been spoiled. I didnt properly research hotplug SCSI on Linux before I started :( Cheers, Terry. >> Thanks, >> Terry. > >Your welcome, > --rick > >-- >fedora-list mailing list >fedora-list@xxxxxxxxxx >To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list >
