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Subject: Re: nfs_getpages: error 4
To: Dmitry Sivachenko <trtrmitya@gmail.com>
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Cc: FreeBSD Stable ML <stable@freebsd.org>
From: Eugene Grosbein <eugen@grosbein.net>
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Date: Sat, 5 Mar 2016 21:01:54 +0700
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05.03.2016 20:42, Dmitry Sivachenko пишет:

>> and to discover what version is broken. And show full mount command/option set.
> I already included mount flags from fstab in my original e-mail:
>
> rw,bg,intr,soft

If that's only options you use, there is another workaround: add options
rsize=1024,wsize=1024 to avoid possible packet reassemply/defragmentation
related bugs.

Again, error 4 is EINTR so you could disable both "soft" and "intr" options for test.
Anyway, re-read mount_nfs(8) manual page, section BUGS before switch to NFSv4.