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From: Dominique Martinet <asmadeus@codewreck.org>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: David Howells <dhowells@redhat.com>,
	Miklos Szeredi <miklos@szeredi.hu>,
	Richard Weinberger <richard.weinberger@gmail.com>,
	linux kernel mailing list <linux-kernel@vger.kernel.org>,
	virtio-fs@redhat.com, viro@zeniv.linux.org.uk,
	Christoph Hellwig <hch@infradead.org>,
	linux-fsdevel@vger.kernel.org,
	v9fs-developer@lists.sourceforge.net,
	Vivek Goyal <vgoyal@redhat.com>
Subject: Re: [Virtio-fs] [PATCH] init/do_mounts.c: Add root="fstag:<tag>" syntax for root device
Date: Thu, 10 Jun 2021 17:33:34 +0900	[thread overview]
Message-ID: <YMHOXn2cpGh1T9vz@codewreck.org> (raw)
In-Reply-To: <YMHKZhfT0CUgeLno@stefanha-x1.localdomain>

Stefan Hajnoczi wrote on Thu, Jun 10, 2021 at 09:16:38AM +0100:
> virtio-9p should be simple. I'm not sure how much additional setup the
> other 9p transports require. TCP and RDMA seem doable if there are
> kernel parameters to configure things before the root file system is
> mounted.

For TCP, we can probably piggyback on what nfs does for this, see the
ip= parameter in Documentation/admin-guide/nfs/nfsroot.rst -- it lives
in net/ipv4/ipconfig.c so should just work out of the box

For RDMA I'm less optimistic, technically if we can setup ipoib with an
ip with the same parameter it should work, but I have nothing to test it
on anyway so that'll wait until someone who cares actually does try...


Either way, we've got to start somewhere, so it's good there's something :)
-- 
Dominique



WARNING: multiple messages have this Message-ID (diff)
From: Dominique Martinet <asmadeus@codewreck.org>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>,
	linux-fsdevel@vger.kernel.org, virtio-fs@redhat.com,
	linux kernel mailing list <linux-kernel@vger.kernel.org>,
	Miklos Szeredi <miklos@szeredi.hu>,
	David Howells <dhowells@redhat.com>,
	viro@zeniv.linux.org.uk,
	Richard Weinberger <richard.weinberger@gmail.com>,
	dgilbert@redhat.com, v9fs-developer@lists.sourceforge.net,
	Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH] init/do_mounts.c: Add root="fstag:<tag>" syntax for root device
Date: Thu, 10 Jun 2021 17:33:34 +0900	[thread overview]
Message-ID: <YMHOXn2cpGh1T9vz@codewreck.org> (raw)
In-Reply-To: <YMHKZhfT0CUgeLno@stefanha-x1.localdomain>

Stefan Hajnoczi wrote on Thu, Jun 10, 2021 at 09:16:38AM +0100:
> virtio-9p should be simple. I'm not sure how much additional setup the
> other 9p transports require. TCP and RDMA seem doable if there are
> kernel parameters to configure things before the root file system is
> mounted.

For TCP, we can probably piggyback on what nfs does for this, see the
ip= parameter in Documentation/admin-guide/nfs/nfsroot.rst -- it lives
in net/ipv4/ipconfig.c so should just work out of the box

For RDMA I'm less optimistic, technically if we can setup ipoib with an
ip with the same parameter it should work, but I have nothing to test it
on anyway so that'll wait until someone who cares actually does try...


Either way, we've got to start somewhere, so it's good there's something :)
-- 
Dominique



  reply	other threads:[~2021-06-10  8:33 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-08 15:35 [Virtio-fs] [PATCH] init/do_mounts.c: Add root="fstag:<tag>" syntax for root device Vivek Goyal
2021-06-08 15:35 ` Vivek Goyal
2021-06-08 18:38 ` [Virtio-fs] " Harry G. Coin
2021-06-08 19:26   ` Vivek Goyal
2021-06-08 19:26     ` Vivek Goyal
2021-06-08 19:49     ` Harry G. Coin
2021-06-08 19:49       ` Harry G. Coin
2021-06-08 21:41 ` Dominique Martinet
2021-06-08 21:41   ` Dominique Martinet
2021-06-09  9:51 ` [Virtio-fs] " Stefan Hajnoczi
2021-06-09  9:51   ` Stefan Hajnoczi
2021-06-09 14:13   ` [Virtio-fs] " Harry G. Coin
2021-06-09 14:13     ` Harry G. Coin
2021-06-09 15:45   ` Vivek Goyal
2021-06-09 15:45     ` Vivek Goyal
2021-06-10  8:16     ` [Virtio-fs] " Stefan Hajnoczi
2021-06-10  8:16       ` Stefan Hajnoczi
2021-06-10  8:33       ` Dominique Martinet [this message]
2021-06-10  8:33         ` Dominique Martinet
2021-06-13 11:56         ` [Virtio-fs] " Dominique Martinet
2021-06-13 11:56           ` Dominique Martinet
2021-06-14 14:28           ` [Virtio-fs] " Vivek Goyal
2021-06-14 14:28             ` Vivek Goyal
2021-06-14 23:14             ` [Virtio-fs] " Dominique Martinet
2021-06-14 23:14               ` Dominique Martinet
2021-06-15 13:50               ` [Virtio-fs] " Vivek Goyal
2021-06-15 13:50                 ` Vivek Goyal
2021-06-16  3:24                 ` [Virtio-fs] " Dominique Martinet
2021-06-16  3:24                   ` Dominique Martinet

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