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List:       zfs-discuss
Subject:    Re: [zfs-discuss] dual protocal on one file system?
From:       "David Magda" <dmagda () ee ! ryerson ! ca>
Date:       2011-03-18 13:05:02
Message-ID: 5897099f231a7115d70c0da8d0b84636.squirrel () webmail ! ee ! ryerson ! ca
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On Fri, March 18, 2011 08:28, Edward Ned Harvey wrote:
> From: David Magda [mailto:dmagda@ee.ryerson.ca]
>> #2 is fixed in OpenSolaris as of snv_129:
>>
>> The new limit is 1024--the same maximum number of groups as Windows
>> supports. Unlikely that it will be back ported to Solaris 10 though (it
>
> If you're doing NFS, just be careful that all the NFS clients support the
> same.  If you have any solaris 10 clients, or pre-129 osol, or any linux
> which doesn't support it ... Then there are problems.
>
> Which is why I said I don't think you're going to eliminate #2.

This is mentioned in the PSARC:

> As part of this case, we're change the "AUTH_SYS" semantics for RPC;
> rather than failing for users in more than 16 groups, we'd prefer to
> copy the semantics of others: just drop the additional groups and
> perform the operation with a reduced set of groups.

    http://arc.opensolaris.org/caselog/PSARC/2009/542/20091008_casper.dik

It also gives this URL which has the limits for various Unix systems:

    http://www.j3e.de/ngroups.html

Legacy is legacy, but a lot of systems are now raising the limit, so it be
'fixed' in a decade or so. :)

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