[OpenAFS] Re: obsolete volumes
Thu, 01 Feb 2007 15:05:13 -0700
Derrick J Brashear wrote:
> On Thu, 1 Feb 2007, Kim Kimball wrote:
>> Jeffrey Hutzelman wrote:
>>> On Wednesday, January 31, 2007 03:44:35 PM -0800 Renata Maria Dart
>>> <firstname.lastname@example.org> wrote:
>>>> Hi Jeff,
>>>> Does -showsuid also imply -nowrite, or can it be used with -nowrite
>>>> to avoid taking the server out?
>>> Yes, -showsuid also implies -nowrite.
>>> In general, you can always use -nowrite to run the salvager in a
>>> read-only mode where it will only tell you what it would do, rather
>>> than actually doing anything. This eliminates any need to shut down
>>> the fileserver; however, you only get that benefit if you run the
>>> salvager by hand - the 'bos salvage' command only knows how to
>>> handle a limited number of salvager arguments.
>>> Remember that if you run the salvager by hand and do not use one of
>>> -nowrite, -showmounts, or -showsuid, you must shut down the
>>> fileserver first. Otherwise you risk damaging volumes.
>> Isn't this true iff salvaging one or more partitions? Salvaging a
>> single volume doesn't cause 'bos salvage' to shut down the file
>> server ...
Oh good. That's what I taught in the Transarc/IBM AFS Admin class.
Every once in a while I discover that I've misinformed a small herd of
admins. Usually not too egregiously.
I remember asking one of the Transarc developers what would happen if I
salvaged a partition without shutting down the fileserver process. As I
recall the consensus was that the file server and or the volserver might
try to modify the volume concurrent with the salvage, and that the
results were 'undefined.'
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