From: Eric Sandeen <sandeen@redhat.com>
To: ext4 development <linux-ext4@vger.kernel.org>
Subject: how to scale root-reserved space going forward...
Date: Sun, 01 Mar 2009 16:22:54 -0600 [thread overview]
Message-ID: <49AB0ABE.1030009@redhat.com> (raw)
5% of a 16T filesystem is getting a little crazy from the point of view
of "root-reserved" - 800G!
But I think the original reason for this reserved space was actually as
an allocator cushion; letting root gain access to it was just a
safety-valve for that.
Now that we have a completely different allocator in ext4, and
potentially much larger filesystems, I think we need to revisit how much
is held back, and for what reason.
Any thoughts on a reasonable way to scale this reservation (or, just for
discussion - if it's even needed at all today for ext4?)
-Eric
next reply other threads:[~2009-03-01 22:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-01 22:22 Eric Sandeen [this message]
2009-03-02 2:47 ` how to scale root-reserved space going forward Theodore Tso
2009-03-02 7:17 ` Ron Johnson
2009-03-02 8:56 ` Andreas Dilger
2009-03-02 16:26 ` Eric Sandeen
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