[OpenAFS] OpenAFS and XFS

[ted creedon]

Actually one system has a ext3 loopback file mounted at /usr/vice/cache =
and
the other has a 10 Gb/afs_ext3 (/dev/sda1) directly pointed to in the
cacheinfo and the 230Gb /vicepa is on /dev/sda2. I.e. both cache and =
/vicepa
are on the same disk controller.

Since I'm using hpt_rraid_133 pci cards and 4 120GB drives set up as =
raid
0/1 per controller, if the OS file system crashes I can easily move the =
the
controller card and the 4 drives to another system and come right back =
up.

I've had to do this with both of my 2K server boxes after 6 sequential =
power
outages ran the MGE EX20 ups's down and trashed the C: drives. Both =
machines
blue screened. Of course I didn't have the smtp ports listening to the =
ups
for a power warning which would trigger a soft shutdown! Fortunately the
raid controllers were on the D: drive and my archived data survived =
intact
on both 2K servers.

My linux boxes survived quite well.

I'm basically looking for 50+ year longevity for the files, independent =
of
the hardware and need to get to a redundant central file server from =
remote
locations in Alaska. Then my clients can get to site technical data and =
hi
res digital pictures either by ftp or afs.

I'm really impressed by AFS. There are 2 250Gb P3 file servers up and
running here. They cost about $1500 ea.

The cheap IDE raid works fine. I pulled a cable off 2 drives to test it =
and
there's a utility hptraid that will rescan and resync the 4 ide drives..

Tedc

-----Original Message-----
From: Derek Atkins [mailto:warlord@MIT.EDU]=20
Sent: Friday, January 09, 2004 3:29 PM
To: ted creedon
Cc: openafs-info@openafs.org
Subject: Re: [OpenAFS] OpenAFS and XFS

Why not just mount the partition directly at /usr/vice/cache
instead of mounting it on /afs_ext3?  I dont know if a symlink
will work there.

-derek

"ted creedon" <tcreedon@easystreet.com> writes:

> Would a=20
>
> ln -s /usr/vice/cache /afs_ext3
>
> work if /usr is reiserfs and /afs_ext3 is ext3?
>
> tedc
>
> -----Original Message-----
> From: openafs-info-admin@openafs.org
[mailto:openafs-info-admin@openafs.org]
> On Behalf Of brettholcomb@charter.net
> Sent: Friday, January 09, 2004 4:49 AM
> To: openafs-info@openafs.org
> Subject: Re: Re: [OpenAFS] OpenAFS and XFS
>
> I did setup a loop mounted ext2 file system.  So far it seems to work =
but
> I'm still setting it up.
>
>>On Fri, Jan 02, 2004 at 12:29:43PM -0500, Derek Atkins wrote:
>>=20
>> > Okay, that lets OpenAFS out for me then.
>>=20
>> I don't see what's so hard about creating an ext2/3 partition for =
your
>> afs cache.  You should have a dedicated cache partition anyways.
>> Worst case you could use the -memcache option to afsd and skip the
>> persistent disk cache.
>
> Even easier is to use a loop-mounted ext2 filesystem.  My machines all
> run ReiserFS and use loop-mounted ext2's for AFS cache.  It works fine
> and is very easy to set up.
> =20
>
> _______________________________________________
> OpenAFS-info mailing list
> OpenAFS-info@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-info
>
>

--=20
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord@MIT.EDU                        PGP key available