From: Chuck Lever III <chuck.lever@oracle.com>
To: David Laight <David.Laight@ACULAB.COM>
Cc: Neil Brown <neilb@suse.de>, Al Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>,
Jens Axboe <axboe@kernel.dk>, Oleg Nesterov <oleg@redhat.com>,
Jeff Layton <jlayton@kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH 1/3] nfsd: use __fput_sync() to avoid delayed closing of files.
Date: Fri, 15 Dec 2023 19:35:57 +0000 [thread overview]
Message-ID: <92D12632-34EB-4EC9-AD3B-FD23D8E0C7F1@oracle.com> (raw)
In-Reply-To: <ac74bdb82e114d71b26864fe51f6433b@AcuMS.aculab.com>
> On Dec 15, 2023, at 1:27 PM, David Laight <David.Laight@ACULAB.COM> wrote:
>
> ...
>
> I'm also sure I remember that nfs wasn't supposed to respond to a write
> until it had issued the actual disk write - but maybe no one do that
> any more because it really is too slow.
> (Especially if the 'disk' is a USB stick.)
That rule applies only to NFSv2, which no-one should use any more.
NFSv3 and later use a two-phase write. Clients send a COMMIT after
an UNSTABLE WRITE to get the persistence guarantee.
--
Chuck Lever
next prev parent reply other threads:[~2023-12-15 19:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-08 3:27 [PATCH 0/3] nfsd: fully close all files in the nfsd threads NeilBrown
2023-12-08 3:27 ` [PATCH 1/3] nfsd: use __fput_sync() to avoid delayed closing of files NeilBrown
2023-12-08 15:01 ` Chuck Lever
2023-12-10 22:47 ` NeilBrown
2023-12-11 19:01 ` Chuck Lever
2023-12-11 22:04 ` NeilBrown
2023-12-12 16:17 ` Chuck Lever
2023-12-11 19:11 ` Al Viro
2023-12-11 22:23 ` NeilBrown
2023-12-11 23:13 ` Al Viro
2023-12-11 23:21 ` Al Viro
2023-12-13 0:28 ` NeilBrown
2023-12-15 18:27 ` David Laight
2023-12-15 19:35 ` Chuck Lever III [this message]
2023-12-15 22:36 ` NeilBrown
2023-12-15 18:28 ` David Laight
2023-12-16 1:50 ` Dave Chinner
2023-12-08 3:27 ` [PATCH 2/3] nfsd: Don't leave work of closing files to a work queue NeilBrown
2023-12-08 3:27 ` [PATCH 3/3] VFS: don't export flush_delayed_fput() NeilBrown
2023-12-08 11:40 ` [PATCH 0/3] nfsd: fully close all files in the nfsd threads Jeff Layton
2023-12-08 14:33 ` Jens Axboe
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