Date: Tue, 09 Jun 2009 09:10:46 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Dan Nelson <dnelson@allantgroup.com> Cc: Kelly Jones <kelly.terry.jones@gmail.com>, freebsd-questions@freebsd.org Subject: Re: Need a filesystem with "unlimited" inodes Message-ID: <4A2E1906.5090708@infracaninophile.co.uk> In-Reply-To: <20090609040443.GA56070@dan.emsphone.com> References: <26face530906081813x5abd6d28i27137b76b0be41c@mail.gmail.com> <20090609040443.GA56070@dan.emsphone.com>
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Dan Nelson wrote:
> In the last episode (Jun 08), Kelly Jones said:
>> What UFS-like filesystem has unlimited inodes, but is a drop-in
>> replacement for ext3, and is fairly easy to configure?
>>
>> Is UFS2 no longer considered the "best" general-use filesystem?
>>
>> Reason I ask: I'm going to create many small (~1K) files on a 100G
>> disk and thus need at least 100M inodes.
>>
>> "newfs -i" maxes out at ~52M inodes (862 groups * 60864 inodes =~ 52M
>> inodes):
>>
>> # newfs -N -i 1 /dev/da1;: same results as -i 2048
>>
>> /dev/da1: 102400.0MB (209715200 sectors) block size 16384, fragment size
>> 2048 using 862 cylinder groups of 118.88MB, 7608 blks, 60864
>> inodes.
>>
>> I realize I can use "f 512 -b 4096" to get 200M+ inodes, but I'm willing
>> to experiment w/ a new filesystem, provided it behaves mostly like UFS.
>> Thoughts?
>
> At this point you're sort of out of the general-use category :) You want
> ZFS. Or rather, you don't want to try and fsck a UFS filesystem with 200M
> inodes. The three drawbacks I can think of to ZFS are it's hard to boot
> from (although you probably aren't booting from da1), it requires more
> memory than UFS, and there is no ACL support at the moment (not that many
> people used the ACL support for UFS). If you're already on an amd64 system
> with 4GB or more RAM you'll be fine.
>
Or store your data in a RDBMS rather than in the filesystem.
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. Flat 3
7 Priory Courtyard
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW, UK
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