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Re: [Networker] HP-UX tape compression question
2005-02-18 10:57:14
thomas mattsson wrote:
Have you checked if there are different patch levels for stape on your
HP-UX Storage Nodes?
I did check this but didn't find any pattern. These servers haven't
exactly been built in a standard manner, and ironically of the only two
that were alike in terms of patch levels , one compressed and the other
didn't.
I have finally fixed the problem by R'ing TFM a bit more carefully. It
boils down to the parameters that were used on mksf when the devices
were first created by persons unknown many moons ago. The crucial part
is "-c 1". The lssf command also helps to show the settings of a
particular device. I knocked up a little script to fix all the Ultrium
devices on a host, and it seems to have done the trick. Here is the
script for reference:
#!/bin/ksh
ioscan -fn | grep ULTRIUM | while read g INST g; do
echo Before:
ls -l /dev/rmt/${INST}mnb
lssf /dev/rmt/${INST}mnb
mksf -v -C tape -I $INST -c 1 -n -u /dev/rmt/${INST}mnb
echo After:
ls -l /dev/rmt/${INST}mnb
lssf /dev/rmt/${INST}mnb
echo
done
--
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