From: Steve Dickson <SteveD@RedHat.com>
To: Linux NFS Mailing list <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH 2/2] manpage: Add a description of the 'softreval' / 'nosoftreval' mount option
Date: Fri, 7 Feb 2020 11:08:23 -0500 [thread overview]
Message-ID: <2747d2f9-037b-a4ba-7d9b-64dc3e303e08@RedHat.com> (raw)
In-Reply-To: <20200129154703.6204-2-steved@redhat.com>
On 1/29/20 10:47 AM, Steve Dickson wrote:
> From: Trond Myklebust <trond.myklebust@hammerspace.com>
>
> Add a description of the 'softreval' / 'nosoftreval' mount options on
> the 'nfs' generic manpage.
>
> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
> Signed-off-by: Steve Dickson <steved@redhat.com>
Committed... (tag: nfs-utils-2-4-3-rc7)
steved.
> ---
> utils/mount/nfs.man | 30 ++++++++++++++++++++++++++++++
> 1 file changed, 30 insertions(+)
>
> diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man
> index 84462cd..6f79c63 100644
> --- a/utils/mount/nfs.man
> +++ b/utils/mount/nfs.man
> @@ -121,6 +121,36 @@ option may mitigate some of the risks of using the
> .B soft
> option.
> .TP 1.5i
> +.BR softreval " / " nosoftreval
> +In cases where the NFS server is down, it may be useful to
> +allow the NFS client to continue to serve up paths and
> +attributes from cache after
> +.B retrans
> +attempts to revalidate that cache have timed out.
> +This may, for instance, be helpful when trying to unmount a
> +filesystem tree from a server that is permanently down.
> +.IP
> +It is possible to combine
> +.BR softreval
> +with the
> +.B soft
> +mount option, in which case operations that cannot be served up
> +from cache will time out and return an error after
> +.B retrans
> +attempts. The combination with the default
> +.B hard
> +mount option implies those uncached operations will continue to
> +retry until a response is received from the server.
> +.IP
> +Note: the default mount option is
> +.BR nosoftreval
> +which disallows fallback to cache when revalidation fails, and
> +instead follows the behavior dictated by the
> +.B hard
> +or
> +.B soft
> +mount option.
> +.TP 1.5i
> .BR intr " / " nointr
> This option is provided for backward compatibility.
> It is ignored after kernel 2.6.25.
>
next prev parent reply other threads:[~2020-02-07 16:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-29 15:47 [PATCH 1/2] manpage: Add a description of the 'nconnect' mount option Steve Dickson
2020-01-29 15:47 ` [PATCH 2/2] manpage: Add a description of the 'softreval' / 'nosoftreval' " Steve Dickson
2020-02-07 16:08 ` Steve Dickson [this message]
2020-02-03 15:15 ` [PATCH 1/2] manpage: Add a description of the 'nconnect' " Olga Kornievskaia
2020-02-04 16:46 ` Steve Dickson
2020-02-04 17:13 ` Trond Myklebust
2020-02-04 17:22 ` Olga Kornievskaia
2020-02-04 17:36 ` Trond Myklebust
2020-02-07 16:08 ` Steve Dickson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2747d2f9-037b-a4ba-7d9b-64dc3e303e08@RedHat.com \
--to=steved@redhat.com \
--cc=linux-nfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).