RE: [SSI-devel] Newbie question about CFS

[Walker, B. J <bru...@hp...>]

Sure.  What CFS tokens do is give nodes the ability to cache data and
attributes.

Bruce

P.s. OGFS and Lustre have analogous mechanisms


> -----Original Message-----
> From: ssi...@li...=20
> [mailto:ssi...@li...] On=20
> Behalf Of Arcot Arumugam
> Sent: Tuesday, March 16, 2004 1:59 PM
> To: ssi...@li...
> Subject: [SSI-devel] Newbie question about CFS
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>=20
> Hi
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> From the documentation I understand that the CFS layer handles the
> read/write tokens which coordinates access to the filesystem.=20
> My question is
> why do we need that ? Does not the filesystem code itself=20
> handle read/write
> locks? I guess the question could be posed as multiple=20
> threads/processes can
> access the same file and the filesystem has locking=20
> mechanisms to prevent
> data corruption. Why should CFS handle locking when it is=20
> already being done
> by the file system?
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> Any answers on illuminating me would be greatly appreciated.
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> Arcot
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