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tthus Rainer Duffner spake:
| Adrian Sevcenco schrieb:
|> Rainer Duffner wrote:
|>
|>> Adrian Sevcenco schrieb:
|>>
|>>> Hi,
|>>> What would you recommend as an FS for an partition greater than 16 TiB?
|>>> This is for an production server (that is, no ext4 recommendations
|>>> please :) )
|>>> What experiences did you had with your preferred FS ? (good and not so
|>>> good points)
|>>>
|>>> Thank you,
|>>> Adrian
|>>>
|>>>
|>> Does anybody actually run such a thing on Linux?
|>>
|> We will ..
|
| That's not what I was asking ;-)
|
|
|> 2 X RAID6 each with 12 drives (24 drives machine)
|> with 2 TB drives .. that is 20 TBs each volume
|>
|>
|>> How long does a FSCK take once it's 80% populated?
|>>
|> i strongly hope that i will never know :))
|>
|
| It will fsck every n'th reboot anyway, or after so-and-so many days
| without fsck, after a reboot.
|
|> it have 2 redundant PSU each on different ups ...
|>
|>
|>> How much RAM does that need?
|>>
|> minimal .. is an storage only machine so 4 GB is enough as the
|> connection is only GigE
|>
|>
|
| I asked about the FSCK.
| Usually, it requires some RAM, too.
|
|
|>> The FSCK on my Virtuozzo-partition takes long enough - and it's only 500
|>> GB or so.
|>>
|> Even for home its efficient to have an ups for each machine..
|>
|
|
| It's running in a datacenter with UPSs. But once I reboot it, it it's
| the "fsck-every-n-days" thing.
|
| I don't think it's a good idea to disable that behaviour.
|
|
|
|
| Rainer
To shorten the fsck discussion with XFS (quoting the man page):
fsck.xfs(8)
NAME
~ fsck.xfs - do nothing, successfully
SYNOPSIS
~ fsck.xfs [ filesys ... ]
DESCRIPTION
~ fsck.xfs is called by the generic Linux fsck(8) program at
startup to
~ check and repair an XFS filesystem. XFS is a journaling
filesystem and
~ performs recovery at mount(8) time if necessary, so fsck.xfs
simply
~ exits with a zero exit status.
~ If you wish to check the consistency of an XFS filesystem, or
repair a
~ damaged or corrupt XFS filesystem, see xfs_check(8) and
xfs_repair(8).
FILES
~ /etc/fstab.
SEE ALSO
~ fsck(8), fstab(5), xfs(5), xfs_check(8), xfs_repair(8).
See also: http://en.wikipedia.org/wiki/XFS
HTH,
Timo
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