Re: How to use increased number of ACL entries?

From: Eric Sandeen <sandeen@sandeen.net>
To: "Michael L. Semon" <mlsemon35@gmail.com>,
	Dave Chinner <david@fromorbit.com>,
	Kasparek Tomas <kasparek@fit.vutbr.cz>
Cc: xfs@oss.sgi.com
Subject: Re: How to use increased number of ACL entries?
Date: Mon, 04 Nov 2013 08:24:25 -0600	[thread overview]
Message-ID: <5277AE19.0@sandeen.net> (raw)
In-Reply-To: <52771FFE.8030009@gmail.com>

On 11/3/13, 10:18 PM, Michael L. Semon wrote:
> On 11/03/2013 09:37 PM, Eric Sandeen wrote:
>> On 11/3/13, 6:39 PM, Dave Chinner wrote:
>>> On Sun, Nov 03, 2013 at 09:17:04AM +0100, Kasparek Tomas wrote:
>>>> Hello,
>>>>
>>>> I'm trying to get more then 25 ACLs entries to work according to
>>>> http://oss.sgi.com/pipermail/xfs/2013-May/026544.html . I'm running 3.10.x
>>>> kernel which seems to contain these changes. I understand, that this is
>>>> on-disk format change, so I expect to need new xfsprogs too. I tried the
>>>> version from CentOS 6.4 (3.1.1) and one from git repo (
>>>> git://oss.sgi.com/xfs/cmds/xfsprogs), but still it fails to create more then
>>>> 25 ACL entries (21 user defined). Is there something I'm still missing?
>>>
>>> You haven't told mkfs to change the on disk format to enable more
>>> than 25 ACLs. Only the version from git will do it, and your CentOS
>>> kernel will not support it.
>>
>> but the 3.10.x kernel you're running will IIRC; use "-m crc=1" on the mkfs.xfs
>> commandline from a git mkfs.xfs.
>>
>> -Eric
>>  
>>> Cheers,
>>>
>>> Dave.
> 
> Y'know, Eric, your best suggestions are always made when I'm working on a 
> non-test PC that I don't really want to touch ;-)  But anyway, (i686 Pentium 
> 4, kernel 3.10.17)...
> 
> git xfsprogs will make the filesystem in question:
> 
> root@bpserver:/storage/devel/git-xfsprogs# mkfs/mkfs.xfs /dev/sdb3
> mkfs.xfs: /dev/sdb3 appears to contain an existing filesystem (swap).
> mkfs.xfs: Use the -f option to force overwrite.
> root@bpserver:/storage/devel/git-xfsprogs# mkfs/mkfs.xfs -f -m crc=1 /dev/sdb3
> meta-data=/dev/sdb3              isize=512    agcount=4, agsize=65536 blks
>          =                       sectsz=512   attr=2, projid32bit=1
>          =                       crc=1
> data     =                       bsize=4096   blocks=262144, imaxpct=25
>          =                       sunit=0      swidth=0 blks
> naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
> log      =internal log           bsize=4096   blocks=12800, version=2
>          =                       sectsz=512   sunit=0 blks, lazy-count=1
> realtime =none                   extsz=4096   blocks=0, rtextents=0
> 
> However, it should be dirent (ftype=1 in the above output) that keeps a 
> vanilla 3.10.17 kernel from mounting the resulting filesystem:

I'm sorry, you are right - it hit kernel v3.11:

5c87d4bc1a86bd6e6754ac3d6e111d776ddcfe57 xfs: increase number of ACL entries for V5 superblocks

$ git describe --contains 5c87d4bc1a86bd6e6754ac3d6e111d776ddcfe57
v3.11-rc1~18^2~41

-Eric

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