From: Theodore Ts'o <tytso@mit.edu>
To: Lucas Nussbaum <lucas.nussbaum@loria.fr>
Cc: linux-ext4@vger.kernel.org,
Emmanuel Jeanvoine <emmanuel.jeanvoine@inria.fr>
Subject: Re: [PATCH, RFC] jbd2: don't write non-commit blocks synchronously
Date: Thu, 6 Mar 2014 13:27:29 -0500 [thread overview]
Message-ID: <20140306182729.GA30706@thunk.org> (raw)
In-Reply-To: <20140306172801.GA12751@xanadu.blop.info>
Hmm... OK, let me make sure I understand what is going on. So you
have a single file system which is mounted read/write, and you are
doing a huge number of copies into the file system, which is keeping
it busy. You are then running a huge number of "mount -o remount" on
that same file system, which should effectively be no-op's, since the
remount isn't actually change the read/only or read/write or any other
mount options. Is that right?
Why were you doing the remount in in your actual production workload,
anyway?
- Ted
next prev parent reply other threads:[~2014-03-06 18:27 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-05 14:13 Extremely slow remounts with concurrent I/O Lucas Nussbaum
2014-03-06 13:56 ` [PATCH, RFC] jbd2: don't write non-commit blocks synchronously Theodore Ts'o
2014-03-06 17:28 ` Lucas Nussbaum
2014-03-06 18:27 ` Theodore Ts'o [this message]
2014-03-06 18:45 ` Lucas Nussbaum
2014-03-06 18:37 ` Lucas Nussbaum
2014-03-08 16:08 ` [PATCH, RFC] fs: only call sync_filesystem() when remounting read-only Theodore Ts'o
2014-03-08 16:08 ` Theodore Ts'o
2014-03-10 11:45 ` Lucas Nussbaum
2014-03-10 14:41 ` Theodore Ts'o
2014-03-10 12:15 ` Lucas Nussbaum
2014-03-13 0:36 ` Dave Chinner
2014-03-13 1:16 ` Theodore Ts'o
2014-03-13 3:14 ` Theodore Ts'o
2014-03-13 6:04 ` Dave Chinner
2014-03-13 12:55 ` Theodore Ts'o
2014-03-13 7:39 ` Christoph Hellwig
2014-03-13 14:20 ` [Cluster-devel] [PATCH] fs: push sync_filesystem() down to the file system's remount_fs() Theodore Ts'o
2014-03-13 14:22 ` [Ocfs2-devel] " Theodore Ts'o
2014-03-13 14:20 ` Theodore Ts'o
2014-03-13 14:20 ` Theodore Ts'o
2014-03-13 14:20 ` Theodore Ts'o
2014-03-13 14:20 ` Theodore Ts'o
2014-03-13 14:50 ` Anders Larsen
2014-03-13 16:23 ` [Cluster-devel] " Jan Kara
2014-03-13 16:23 ` [Ocfs2-devel] " Jan Kara
2014-03-13 16:23 ` Jan Kara
2014-03-13 16:23 ` Jan Kara
2014-03-13 16:23 ` Jan Kara
2014-03-13 16:23 ` Jan Kara
2014-03-13 16:28 ` [Cluster-devel] " Steven Whitehouse
2014-03-13 16:28 ` [Ocfs2-devel] " Steven Whitehouse
2014-03-13 16:28 ` Steven Whitehouse
2014-03-13 16:28 ` Steven Whitehouse
2014-03-13 16:28 ` Steven Whitehouse
2014-03-13 16:28 ` Steven Whitehouse
2014-03-13 16:28 ` [Cluster-devel] " Steven Whitehouse
2014-03-13 16:28 ` Steven Whitehouse
2014-03-13 23:15 ` [Cluster-devel] " Theodore Ts'o
2014-03-13 23:15 ` [Ocfs2-devel] " Theodore Ts'o
2014-03-13 23:15 ` Theodore Ts'o
2014-03-13 23:15 ` Theodore Ts'o
2014-03-13 23:15 ` Theodore Ts'o
2014-03-13 23:15 ` Theodore Ts'o
2014-03-14 12:13 ` Jan Kara
2014-03-14 12:13 ` [Ocfs2-devel] " Jan Kara
2014-03-14 12:13 ` Jan Kara
2014-03-14 12:13 ` Jan Kara
2014-03-14 12:13 ` Jan Kara
2014-03-14 12:13 ` Jan Kara
2014-03-14 0:33 ` Steve French
2014-03-14 0:33 ` [Ocfs2-devel] " Steve French
2014-03-14 0:33 ` Steve French
2014-03-14 0:33 ` Steve French
2014-03-14 0:33 ` Steve French
2014-03-14 0:33 ` Steve French
2014-03-14 1:23 ` [Cluster-devel] " Theodore Ts'o
2014-03-14 1:23 ` [Ocfs2-devel] " Theodore Ts'o
2014-03-14 1:23 ` Theodore Ts'o
2014-03-14 1:23 ` Theodore Ts'o
2014-03-14 1:23 ` Theodore Ts'o
2014-03-14 1:23 ` Theodore Ts'o
2014-03-13 7:19 ` Extremely slow remounts with concurrent I/O Dave Chinner
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