Devfs strangeness in 2.4.18

Dag Nygren (dag@newtech.fi)
Thu, 06 Jun 2002 23:57:27 +0300


Hi,
just installed a fresh Mandrake 8.2 here and am
seeing devfs behaving very strangely.
Here is some out put that shows the problems:

backup:dev 1004 % ls -ld sg*
drwxr-xr-x 1 root root 0 Jun 7 2002 sg
lr-xr-xr-x 1 root root 36 Jun 7 2002 sg0 ->
scsi/host0/bus0/target0/lun0/generic
lr-xr-xr-x 1 root root 36 Jun 7 2002 sg1 ->
scsi/host1/bus0/target1/lun0/generic
lr-xr-xr-x 1 root root 36 Jun 7 2002 sg2 ->
scsi/host1/bus0/target2/lun0/generic
lr-xr-xr-x 1 root root 36 Jun 7 2002 sg3 ->
scsi/host1/bus0/target3/lun0/generic
lr-xr-xr-x 1 root root 36 Jun 6 23:46 sg4 ->
scsi/host2/bus0/target2/lun0/generic
backup:dev 1005 % cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: DDRS-39130D Rev: DC1B
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: IBM Model: DCAS-34330W Rev: S65A
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 01 Lun: 00
Vendor: ADIC Model: VLS DLT Rev: 0235
Type: Medium Changer ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 03 Lun: 00
Vendor: Quantum Model: DLT4000 Rev: CD3C
Type: Sequential-Access ANSI SCSI revision: 02
Host: scsi2 Channel: 00 Id: 02 Lun: 00
Vendor: WangDAT Model: Model 3400DX Rev: 1.4a
Type: Sequential-Access ANSI SCSI revision: 02
backup:dev 1006 % ls -l /dev/st?
lr-xr-xr-x 1 root root 31 Jun 7 2002 /dev/st0 ->
scsi/host1/bus0/target2/lun0/mt
lr-xr-xr-x 1 root root 31 Jun 7 2002 /dev/st1 ->
scsi/host1/bus0/target3/lun0/mt

The problems are tha the sg? links doesn't correspond to the real
devices shown by /proc/scsi/scsi (Which matches the real situation)
sg0 matches the first disk, OK
sg1 matches the Medium changer, OK
sg2 matches nothing...... There is no target 2 on host1 !!!
sg3 matches the DLT tape drive
sg4 matches the DAT tape drive

The other problem is the st? links.
st0 is linked out into nothing ...

Seems like 3 host adapters is too much for devfs......
Do I need an upgrade ?

BRGDS

-- 
Dag Nygren                               email: dag@newtech.fi
Oy Espoon NewTech Ab                     phone: +358 9 8024910
Träsktorpet 3                              fax: +358 9 8024916
02360 ESBO                              Mobile: +358 400 426312
FINLAND

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