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Re: RAID needs more to survive a power hit, different /boot layout for e

To: Michael Tokarev <mjt@xxxxxxxxxx>
Subject: Re: RAID needs more to survive a power hit, different /boot layout for example (was Re: draft howto on making raids for surviving a disk crash)
From: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>
Date: Mon, 4 Feb 2008 09:09:53 -0500 (EST)
Cc: Moshe Yudkowsky <moshe@xxxxxxxxx>, linux-raid@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, sandeen@xxxxxxxxxxx
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On Mon, 4 Feb 2008, Michael Tokarev wrote:

Moshe Yudkowsky wrote:
[]
If I'm reading the man pages, Wikis, READMEs and mailing lists correctly
--  not necessarily the case -- the ext3 file system uses the equivalent
of data=journal as a default.

ext3 defaults to data=ordered, not data=journal. ext2 doesn't have journal at all.

The question then becomes what data scheme to use with reiserfs on the

I'd say don't use reiserfs in the first place ;)

Another way to phrase this: unless you're running data-center grade
hardware and have absolute confidence in your UPS, you should use
data=journal for reiserfs and perhaps avoid XFS entirely.

By the way, even if you do have a good UPS, there should be some control program for it, to properly shut down your system when UPS loses the AC power. So far, I've seen no such programs...

/mjt

Why avoid XFS entirely?

esandeen, any comments here?

Justin.


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