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Re: [Qemu-block] [Qemu-devel] [qcow2] how to avoid qemu doing lseek(SEEK
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From: |
Stephane Chazelas |
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Subject: |
Re: [Qemu-block] [Qemu-devel] [qcow2] how to avoid qemu doing lseek(SEEK_DATA/SEEK_HOLE)? |
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Date: |
Wed, 8 Feb 2017 14:20:51 +0000 |
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User-agent: |
Mutt/1.5.24 (2015-08-30) |
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