From: manio <manio@skyboo.net>
To: linux-btrfs@vger.kernel.org
Subject: Re: NFS mount attempts hangs with btrfs on server side
Date: Sat, 17 Apr 2010 22:10:15 +0200 [thread overview]
Message-ID: <4BCA15A7.9000502@skyboo.net> (raw)
> Greetings.
>
> I am observing a case whereby NFS mounting seems to hang. A tcpdump
> trace reveals that it retries forever RPC and exchanging NFS messages
> without giving any warning or error message about what's wrong. There is
> no firewall active, and the NFSserver (.1) has the client (.101)
> unconditionally allowed.
>
> It's a simple
> mount -t nfs 192.168.100.1:/B/home/jengelh /home/jengelh -o tcp,intr,soft
>
> /B is a btrfs volume. Mounting an ext4 volume over NFS instead completes
> in a splitsecond.
>
> Attached is the pcap file (->wireshark pretty display for deciphering).
>
> It seems pretty much independent of the Linux kernel used; I can
> reproduce this in both 2.6.33-rc8 as well as 2.6.31.12.
Hello
I have very similar behavior. On the server side i have nfs kernel server
(nfs version 3) - when mounting ext3 directories - all works fine,
but when i export btrfs directory and try to mount it:
on client side (debian sid) i've got:
mount.nfs: Connection timed out
and during mounting time on server side (debian lenny):
about 20 lines with: "authenticated mount request ..."
i also tryed it on another client with debian lenny and first mount try
was about several seconds long and results in:
mount.nfs: Stale NFS file handle
next tryes results with same error, but it was very fast responses
to the mount command
after several mount tryes i always have a problem with restarting
nfs-kernel-server with debian init script:
Stopping NFS kernel daemon: mountd nfsd.
Unexporting directories for NFS kernel daemon....
Exporting directories for NFS kernel daemon....
Starting NFS kernel daemon: nfsd <--- hungs here
... and the only way to bring the nfs server back online
was to reboot the server :(
regards,
--
Mariusz Bialonczyk
jabber/e-mail: manio@skyboo.net
http://manio.skyboo.net
next reply other threads:[~2010-04-17 20:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-17 20:10 manio [this message]
2010-04-21 10:25 ` NFS mount attempts hangs with btrfs on server side Manio
2010-04-21 10:29 ` Jan Engelhardt
-- strict thread matches above, loose matches on Subject: below --
2010-03-01 0:41 Jan Engelhardt
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