[OpenAFS] disaster recovery, help needed.

ph rhole oper slitbit@fastmail.fm
Mon, 24 Apr 2006 13:15:34 +0300

On Mon, 24 Apr 2006 09:05:11 +0200, "Horst Birthelmer"
<horst@riback.net> said:
> On Apr 24, 2006, at 3:42 AM, ph rhole oper wrote:
> > On Sun, 23 Apr 2006 22:20:19 +0200 (CEST), "Chris Huebsch"
> > <chris.huebsch@informatik.tu-chemnitz.de> said:
> >> Hello,
> >>
> >> On Sun, 23 Apr 2006, ph rhole oper wrote:
> >>
> >>> The hd holding the root directory of an afs server has crashed,=20=20
> >>> thus the
> >>> /var/openafs/ files are lost with it,
> >>
> >> Was the crashed server only a fileserver or both fileserver and
> >> databaseserver? If the latter, was it your only databaseserver?
> > It was a db server too, but there is one more left online.I think that
> > if i install a new OS,
> > mount /vicepa , and start afs services, ubik will synchronize and the
> > new OS's afs will just bring the /vicepa volumes up.Right?
> The DB server cold make some trouble on resynchronization with an=20=20
> empty database (It's really no big deal)
Whenever i need to install a new db server on the network, i just start
it with an empty database and it synchronizes with other
db servers anyway (is it any other way i could do this anyway?)
> but the fileserver will=20=20
> work, yes.
> I did that many times in the past.
> You just have to take care of the KeyFile etc.
I'll just copy the KeyFile from another server..
> >>> But the /vicepa partition is ok.Is it possible to recover the data
> >>> (transfer them to another working openafs server), from the
> >>> /vicepa/VOL* files?
> I don't see why a new copy of the fileserver wouldn't do the right=20=20
> thing here.
A new copy of the fileserver?
> IIRC it's a linux server.
Its FreeBSD actually.
> If not, you really want to install the same server type (inode or=20=20
> namei).
> It would be fatal error if you don't. The fileserver of the wrong=20=20
> type can damage your volumes.
I'll just use the binary version from the openafs.org site.The previous
OS was linux but i don't think i've tampered
with the inode/namei option when i built it from source there..
> Horst
By the way, if the afs files (KeyFile and /vicepa/*) are generated on a
32bit host, would they be compatible if used on a 64bit host?
I mean, can you use them on a new 64bit OS installation?My first guess
is no..but i don't know.

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