[7734] in testers
Re: /mit symlink to attached locker can't be removed
daemon@ATHENA.MIT.EDU (Evan Broder)
Wed Sep 24 23:56:38 2008
Message-ID: <48DB0BC8.2000800@mit.edu>
Date: Wed, 24 Sep 2008 23:55:52 -0400
From: Evan Broder <broder@MIT.EDU>
MIME-Version: 1.0
To: Alex T Prengel <alexp@mit.edu>
CC: Geoffrey Thomas <geofft@mit.edu>, testers@mit.edu
In-Reply-To: <200809192353.m8JNru2Q026955@dit.mit.edu>
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Hey Alex -
I think geofft and I are kind of hoping to flip out some weekend
and fix liblocker and pyhesiodfs and so forth to be internally
consistent and allow the sort of manipulations that can be traditionally
done with attach. In the mean time, you can do a bind mount locally over
the original AFS mountpoint. For example
mount --bind /afs/.athena/software/java_v1.1.6
/afs/athena/software/java_v.1.1.6
should cause the RW mountpoint to become accessible from
/mit/java_v1.1.6. This obviously isn't quite ideal, but it makes a good
temporary solution.
- Evan
Alex T Prengel wrote:
>>> I can attach and add lockers, but detach doesn't remove the /mit symlink,
>>> and root can't delete it:
>>>
>
>
>> This is "intentional"; it's a FUSE filesystem. Even if you deleted it, you
>> couldn't create another symlink on top of it, and next time you referenced
>> it at all, it would come back.
>>
>
>
>> Are you trying to attach something else (like a read-write locker) on top
>> of it?
>>
>
> Yes- I absolutely need to have this ability as I maintain many lockers
> that are replicated, and I need to do maintenance in the R/W volumes
> before releasing to the R/O volumes.
>
> i.e. I need to be able to mount /afs/.athena/software/java_v1.1.6 at
> /mit/java_v1.1.6, after /afs/athena/software/java_v1.1.6 had previously
> been mounted there (and vice versa).
>
>
>> We should probably support this, for locker maintainers. I've
>> reported this as ticket #96 at debathena.mit.edu/trac/.
>>
>
> Thanks- how do I follow subsequent action on this ticket? I haven't used
> the debathena tracking system before-
>
> Alex
>
