[855] in SIPB-AFS-requests

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Re: recovering files

daemon@ATHENA.MIT.EDU (mhpower@Athena.MIT.EDU)
Mon Feb 8 18:08:12 1993

From: mhpower@Athena.MIT.EDU
To: jsl@Athena.MIT.EDU
Cc: sipb@Athena.MIT.EDU, sipb-afsreq@Athena.MIT.EDU
Date: Mon, 08 Feb 93 17:55:59 EST

>                                      ... However, it also removed
>RMAIL.rmail in the same directory which contained a couple of useful
>hacks ...

>So now, the point of this: is there any way I can get that file back?

Yes (see below).

>Some of the atena accounts have an old snapshot of the AFS locker as a
>subdirectory but I don't seem to have this.

These snapshots (called backup volumes) exist for home directories
under /afs/sipb.mit.edu, but they generally aren't mounted. To get
access to your backup volume in the way that's standard for Athena
accounts, you can type

   fs mkmount ~/OldFiles user.jsl.backup

This mounts your backup volume such that it can be (for read-only
purposes) accessed as any other subdirectory, except that it can be
removed using

   fs rmmount ~/OldFiles

Unfortunately, this wouldn't have been useful in recovering the
RMAIL.rmail file, since that file wasn't present in the version of the
user.jsl.backup volume as of when you sent your mail.

>                                             (If I did, I imagine that
>I'd have to hurry to take action, because the snapshot seems to be
>about one day old and thus would vanish soon.

They vanish when a 'vos backup' command is executed for the volume.
For home directories under /afs/athena.mit.edu, this happens about
five times a week. For home directories under /afs/sipb.mit.edu, it's
once a week (recently, around 11 AM Monday morning plus or minus a few
hours, because that's when I happen to feel like doing it :-)

In any case, files are backed up to tape weekly (typically on Monday
afternoons), and I've restored your RMAIL.rmail file from the February
1 tape, and put it in

   /afs/sipb/user/mhpower/jsl/RMAIL.rmail

Please delete this copy once you've put it back into your own
directory. If you need other files restored from tape, please send
mail to sipb-afsreq@athena.mit.edu, rather than to the whole sipb
list...

Matt

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