Re: Raid crash. xfs_force_shutdown
On Fri, Jan 23, 2004 at 09:51:22AM +0000, alberto wrote:
>
> >http://www.tldp.org/HOWTO/Software-RAID-HOWTO-2.html#ss2.1
>
> >The RAID layer has absolutely nothing to do with the filesystem
> >layer.
> >You can put any filesystem on a RAID device, just like any other
> >block device.
>
> Ext3 ha un limite di capacita' con dischi grossi?
> Abbiamo dei dischi, come vedi, da 400Gb. Forse per quello hanno
> messo xfs? (come ti dicevo non ho fatto io il lavoro).
ti mostro un'altra fonte di informazioni:
la directory Documentation nel tuo kernel tree (se non ce l'hai
scaricatelo).
esempio:
# cat Documentation/filesystems/ext2.txt
[...]
Limitations
-----------
There are various limits imposed by the on-disk layout of ext2. Other
limits are imposed by the current implementation of the kernel code.
Many of the limits are determined at the time the filesystem is first
created, and depend upon the block size chosen. The ratio of inodes to
data blocks is fixed at filesystem creation time, so the only way to
increase the number of inodes is to increase the size of the filesystem.
No tools currently exist which can change the ratio of inodes to blocks.
Most of these limits could be overcome with slight changes in the
on-disk
format and using a compatibility flag to signal the format change (at
the expense of some compatibility).
Filesystem block size: 1kB 2kB 4kB 8kB
File size limit: 16GB 256GB 2048GB 2048GB
Filesystem size limit: 2047GB 8192GB 16384GB 32768GB
[...]
(ho preso ext2, perche' come gia' saprai ext3 e' un ext2+journalling)
Ho visto che manca la documentazione di reiserfs (forse ho gli occhi
coperti di prosciutto...), comunque anche lui supporta dei dischi belli
grossi (17.6TB ... hai voglia) ed e' la prima FAQ che trovi su
http://www.namesys.com/
ciao
--
mattia
:wq!
PS: io andrei di ReiserFS, e se la macchina puo' permettersi di
schiantare e perdere dati proverei il Reiser4 (mandando report agli
sviluppatori)
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