From: Stephane Chazelas <stephane.chazelas@gmail.com>
To: Max Reitz <mreitz@redhat.com>
Cc: qemu-devel@nongnu.org, Qemu-block <qemu-block@nongnu.org>,
Kevin Wolf <kwolf@redhat.com>
Subject: Re: [Qemu-devel] [qcow2] how to avoid qemu doing lseek(SEEK_DATA/SEEK_HOLE)?
Date: Wed, 8 Feb 2017 14:20:51 +0000 [thread overview]
Message-ID: <20170208142051.GB19518@chaz.gmail.com> (raw)
In-Reply-To: <f8a93c01-682e-fbcb-7b81-012f6df97465@redhat.com>
2017-02-08 00:43:18 +0100, Max Reitz:
[...]
> Therefore, the patch as it is makes sense. The fact that said lseek() is
> slow on ZFS is (in my humble opinion) the ZFS driver's problem that
> needs to be fixed there.
[...]
For the record, I've mentioned the qemu performance implication at
https://github.com/zfsonlinux/zfs/issues/4306#issuecomment-277000682
Not much more I can do at that point.
That issue was raised a year ago and has not been assigned any
milestone yet.
--
Stephane
prev parent reply other threads:[~2017-02-08 14:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-02 12:30 [Qemu-devel] [qcow2] how to avoid qemu doing lseek(SEEK_DATA/SEEK_HOLE)? Stephane Chazelas
2017-02-02 15:23 ` Laszlo Ersek
2017-02-02 16:03 ` Stephane Chazelas
2017-02-07 23:43 ` Max Reitz
2017-02-08 14:06 ` Stephane Chazelas
2017-02-08 14:27 ` Max Reitz
2017-02-08 17:16 ` Stephane Chazelas
2017-02-08 14:20 ` Stephane Chazelas [this message]
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