I am using an 80GB ide disk together with an
ide <> firewire converter card. (Oxford chip)
usually I am doing the following: (no SCSI hd present but sd_mod loaded)
* connect & power on hd
* insmod ieee1394, ohci1394 and sbp2
* look for the partition info in the syslog, looks like this:
Dec 13 20:24:29 ki_pc2 kernel: scsi0 : IEEE-1394 SBP-2 protocol driver
Dec 13 20:24:29 ki_pc2 kernel: Vendor: MAXTOR 4 Model: K080H4 Rev:
Dec 13 20:24:29 ki_pc2 kernel: Type: Direct-Access ANSI SCSI revision: 06
Dec 13 20:24:29 ki_pc2 kernel: Attached scsi disk sdd at scsi0, channel 0, id 0, lun 0
Dec 13 20:24:29 ki_pc2 kernel: SCSI device sdd: 156301487 512-byte hdwr sectors (80026 MB)
Dec 13 20:24:29 ki_pc2 kernel: sdd: sdd1
Dec 13 20:24:58 ki_pc2 /sbin/hotplug: no runnable /etc/hotplug/ieee1394.agent is installed
note: sdd, not sda as expected
* use the disk - works ok, hdparm says ~12MB/sec
* rmmod sbp2 (and perhaps also the other 1394 modules)
* disconnect hard drive.
The following happens: on 'insmod sbp2' the disk is found
but the minor device is incremented every time (now I am at /dev/sde :-( )
Trying to open one of the lower (non-present) minors results in an Oops:
in sd.c: at about line 470
* The following code can sleep.
* Module unloading must be prevented
SDev = rscsi_disks[target].device;
^^^^^ this becomes zero for the lower minor devices.
if (SDev->host->hostt->module) ---- Oops
So it seems that the rmmod sbp2 does not properly clean up
the internal bookkeeping in sd.c when being unloaded.
I am not sure what happens if scsi-remove-single-device is done instead
of rmmod sbp2.
OTOH /proc/scsi/scsi correctly shows the present devices
there are a few /dev/sd[a-?] left so I dont have to reboot every time but
the situation is a bit non-optimal for now.
-- Karl Kiniger email@example.com Kretztechnik AG OE5KVN Tiefenbach 15 A-4871 Zipf Tel: (++43) 7682-3800-710 Fax (++43) 7682-3800-47 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to firstname.lastname@example.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Dec 15 2001 - 21:00:27 EST