From: Tony van Lingen (tony.vanlingen@epa.qld.gov.au)
Date: Wed Feb 18 2004 - 00:11:32 EST
G'day all,
I've got a backup problem with a sun E250 on which we changed the tape
drive a number of weeks ago. Directly after the change everything worked
fine, until last Friday when the backup script started failing. The
error we get is: '/dev/rmt/0n: write protected or reserved.'. The tape
is not write protected.
In an effort to repair this, I patched the box with the last patch
bundle. I found a netbackup patch readme (for Solaris 8) that mentioned
this and suggested that this was due to a bug in the st driver. Patch
113277-17 is the last st driver patch that I could find, and it is
installed. The drive produces the error even directly after a cold
reboot, when `mt erase` is the first command issued. I did also power
off the tape drive enclosure during the reboot.
The bug description contained a workaround, which I applied (tried to):
set the ST_NO_ RESERVE_RELEASE flag (0x20000) in the st.conf line. This
didn't help either, not even after a cold reboot.
Any suggestions are welcome. Is the syntax in the st.conf right?
Thanks,
Tony
error:
-----
$ mt erase
/dev/rmt/0n: write protected or reserved.
/var/adm/messages:
------------------
Feb 18 14:34:54 falcon.epa.qld.gov.au scsi: [ID 365881 kern.info]
/pci@1f,4000/scsi@2,1/st@4,0 (st25):
Feb 18 14:34:54 falcon.epa.qld.gov.au <HP DDS-3 4MM DAT>
Feb 18 14:34:54 falcon.epa.qld.gov.au scsi: [ID 193665 kern.info] st25
at glm3: target 4 lun 0
Feb 18 14:34:54 falcon.epa.qld.gov.au genunix: [ID 936769 kern.info]
st25 is /pci@1f,4000/scsi@2,1/st@4,0
/kernel/drv/st.conf:
--------------------
# original HP_DAT_3 entry:
#HP_DAT_3 = 1, 0x34, 0, 0x09639, 4, 0x00, 0x8C, 0x8C, 0x8C, 1;
"HP C1537A", "HP DDS-3 4mm DAT ", "HP_DAT_3",
HP_DAT_3 = 1, 0x34, 0, 0x29639, 4, 0x00, 0x8C, 0x8C, 0x8C, 1;
name="st" class="scsi" target=0 lun=0;
name="st" class="scsi" target=1 lun=0;
name="st" class="scsi" target=2 lun=0;
name="st" class="scsi" target=3 lun=0;
name="st" class="scsi" target=4 lun=0;
name="st" class="scsi" target=5 lun=0;
name="st" class="scsi" target=6 lun=0;
name="st" parent="fp" target=0;
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