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From: Bobby Dennett <bdennett@gmail.com>
Date: Tue, 18 Sep 2012 22:04:56 -0700
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 <CAK3wHS6-AOFufXk4VQj4KSyE8hCVor821rJLtatRaNGr2KtTKw@mail.gmail.com>
Subject: Recommended mount options for ext4 datanode filesystems
To: user@hadoop.apache.org
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Hi all,

We will soon be adding additional datanodes to our clusters and plan to
reevaluate our filesystem type on these servers, potentially moving to ext4
from xfs. Besides the noatime mount option, are there other generally
recommended options for mounting ext4 filesystems for use with Hadoop? With
newer Linux kernels, is nodelalloc still needed?

Thanks in advance,
-Bobby

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Hi all,<div><br></div><div>We will soon be adding additional datanodes to o=
ur clusters and plan to reevaluate our filesystem type on these servers, po=
tentially moving to ext4 from xfs. Besides the noatime mount option, are th=
ere other generally recommended options for mounting ext4 filesystems for u=
se with Hadoop? With newer Linux kernels, is nodelalloc still needed?</div>

<div><br></div><div>Thanks in advance,</div><div>-Bobby<br></div><div><br><=
/div>

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