Re: [9fans] Ken's FS: WORM Superblock read failed

[Gregory Pavelcak <pavelcak@gmail.com>]

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I didn't try recover, but since the config I really want is a partitioned
one like you suggest, and the errors I reported didn't make anyone
immediately think "dying hard drive"; I think I'll try getting your (Erik's)
fs from contrib.

I assume I can do something like this:

Put the two hard drives destined to be on the file server on my existing
fossil-only machine (I have a hard drive with that somewhere from the last
few days of experimentation).

Diskpart and diskprep those drives with, for example, 9fat, cache, and worm
on the drive destined to be h0 on the server and 9fat, other and worm on h2.
Using some appropriate sizes (approx 10% of disk size going to cache and
other with h0."worm" and h2."worm" the same size for mirroring).

Put 9load, plan9.ini, a kernel from fs on h0.9fat (Something missing? I
guess I just want to emulate what pc/bootfloppy would do for me, but I want
to copy those things to h0.9fat.)

Move the disks to the file server, boot, watch everything come up just fine,
and config something like:
  filsys main cph0."cache"f{ph0."worm"h2."worm"}
  filsys dump o
  filsys other ph2."other"

I'd appreciate it if someone would let me know if I'm way off base here.
Otherwise, I'll probably give this a shot this afternoon or tomorrow.

Thanks.

Greg

On Sun, May 30, 2010 at 11:56 AM, erik quanstrom <quanstro@quanstro.net>wrote:

> > Yesterday, I configured a file server with two IDE drives as ch0fh2. The
> > setup seemed to go OK, but one of the last things on the screen before it
> > brought the server up is in the subject line: WORM Superblock read
> failed.
> > It also said something about block 2 (I know the numeral `2' was in
> there).
> >
> > When I booted this morning and let it go through the whole process, I
> got:
> >    tag = Tnone/0: expected Tbuck/2697 -- flushed (2697)
> >    panic: cwinit: ??? tag c bucket
>
> if you booted from one of these drives, you may have stepped on
> the partition table and/or configuration.
>
> have you tried "recover main" at the configuration prompt?
>
> i'd recommend making the cache relatively small.  p10.10 might be
> a good plan.
>

> >
> > Motherboard is ECS L4S5MG with SiS 650/961 chipset
> > Hard Drives are both Western Digital WD800JB (80G ATA drives)
> > The kernel is 9fsfs64 from /sources/extra/kensfs.tgz. I don't know if
> Erik's
> > fs has mods that are relevant. I haven't tried his contrib version yet.
>
> if you do use it, you can partition the drives with prep and/or
> fdisk and use partition names.  percentage is pretty sloppy when
> you get to an 80gb drive.  i found that absolute sector numbers
> are error prone for humans to type and sharing an aoe target
> makes sense.  here's my main configuration
>
>        filsys main cpe2.0"kcache"e2.1
>
> - erik
>

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