* [9fans] adm. pseudo-WORM fs
@ 1998-02-03 8:50 Kazumi
0 siblings, 0 replies; 4+ messages in thread
From: Kazumi @ 1998-02-03 8:50 UTC (permalink / raw)
WORM related questions...
Who uses WORM jukebox __outside__ of bell-labs?
Which model of WORM jukebox, Sony or anything else?
Both good/bad experiences with WORM jukebox are welcome.
Who uses pseudo-WORM jukebox?
How do you back up the pseudo-WORM, just use scuzz to 8mm tape?
^ permalink raw reply [flat|nested] 4+ messages in thread
* [9fans] adm. pseudo-WORM fs
@ 1998-02-08 17:01 jim
0 siblings, 0 replies; 4+ messages in thread
From: jim @ 1998-02-08 17:01 UTC (permalink / raw)
>i'd quite like, however, to switch to a proper jukebox of some sort.
>i'm curious what changes were required to support the HP ones,
>and what other decent ones might be on the market.
at the time we changed to the hp jukebox some other changes were made
(e.g. more parallelism, multiple network interfaces) but the changes for
the jukebox itself were fairly minor, implementing the standard scsi
medium-changer commands. it has worked so far on both brands of jukebox
we've tried, hp and a much smaller r/w one which i can't remember the
name of.
--jim
^ permalink raw reply [flat|nested] 4+ messages in thread
* [9fans] adm. pseudo-WORM fs
@ 1998-02-03 9:00 forsyth
0 siblings, 0 replies; 4+ messages in thread
From: forsyth @ 1998-02-03 9:00 UTC (permalink / raw)
>>Who uses pseudo-WORM jukebox?
>>How do you back up the pseudo-WORM, just use scuzz to 8mm tape?
i use a pseudo-worm (on a 4Gb IBM drive). 9fs dump is well worthwhile.
backup is done in an `allow' mode to other media
via disk/mkfs -a at the moment.
one problem is that i believe it is not straightforward
as things stand to extend a pseudo-worm.
you need to dump/reinit/restore when it fills up (losing the history).
that's what i did when i ran one at the university on a much smaller disc.
(i later switched to using a plain file system without a dump file system.)
fortunately, my current pseudo-worm is big enough that it's not a problem just
yet.
i'd quite like, however, to switch to a proper jukebox of some sort.
i'm curious what changes were required to support the HP ones,
and what other decent ones might be on the market.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [9fans] adm. pseudo-WORM fs
@ 1998-01-31 3:48 Kenji
0 siblings, 0 replies; 4+ messages in thread
From: Kenji @ 1998-01-31 3:48 UTC (permalink / raw)
Hello 9fans!
I have installed pseudo-WORM file system.
However I don't know how to administrate the system.
My system is:
w0: 4.3GB
w1: 500MB
w2: 500MB
and the configuration is:
filsys main c[w1w2]fw0
I want to know how much the pseudo-WORM is consumed.
Statw command on 9fs shows:
9fs% statw
cwstats
nio = 0 0 0
cache main
maddr = 3
msize = 5107
caddr = 514
csize = 255350
sbaddr = 239333
craddr = 374767 374767
roaddr = 374772 374772 0+68%
slast = 103908
snext = 374771
wmax = 374770 0+68%
wsize = 1058376 1+93%
57161 none
55 dirty
0 dump
198075 read
59 write
0 dump1
cache 2% full
Thanks,
Kenji Arisawa
E-mail: arisawa@aichi-u.ac.jp
^ permalink raw reply [flat|nested] 4+ messages in thread
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1998-02-03 8:50 [9fans] adm. pseudo-WORM fs Kazumi
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1998-02-08 17:01 jim
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1998-01-31 3:48 Kenji
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