From: Stefan Hajnoczi <stefanha@redhat.com>
To: Alex Kalenyuk <akalenyu@redhat.com>
Cc: "Daniel P. Berrangé" <berrange@redhat.com>,
"Adam Litke" <alitke@redhat.com>,
qemu-devel@nongnu.org, kwolf@redhat.com,
"Richard W.M. Jones" <rjones@redhat.com>
Subject: Re: qemu-img cache modes with Linux cgroup v1
Date: Mon, 6 May 2024 14:24:39 -0400 [thread overview]
Message-ID: <20240506182439.GC7375@fedora.redhat.com> (raw)
In-Reply-To: <CAHahevc5nrUYakDezGmBAn3LPCwvvYREuHdGKXZvaQY-n1Q85A@mail.gmail.com>
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On Mon, May 06, 2024 at 08:10:25PM +0300, Alex Kalenyuk wrote:
> Hey, just FYI about tmpfs, during some development on Fedora 39 I noticed
> O_DIRECT is now supported on tmpfs (as opposed to our CI which runs Centos
> 9 Stream).
> `qemu-img convert -t none -O raw tests/images/cirros-qcow2.img
> /tmp/cirros.raw`
> where /tmp is indeed a tmpfs.
>
> I might be missing something so feel free to call that out
Yes, it was added by:
commit e88e0d366f9cfbb810b0c8509dc5d130d5a53e02
Author: Hugh Dickins <hughd@google.com>
Date: Thu Aug 10 23:27:07 2023 -0700
tmpfs: trivial support for direct IO
It's fairly new but great to have.
Stefan
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prev parent reply other threads:[~2024-05-06 18:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-31 15:40 qemu-img cache modes with Linux cgroup v1 Stefan Hajnoczi
2023-07-31 16:06 ` Richard W.M. Jones
2023-07-31 17:19 ` Daniel P. Berrangé
2023-07-31 19:15 ` Stefan Hajnoczi
2024-05-06 17:10 ` Alex Kalenyuk
2024-05-06 18:24 ` Stefan Hajnoczi [this message]
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