2.6.9: NFS (+XFS) Problem - Clients getting Stale filehandles.
From: Anders Saaby (as_at_cohaesio.com)
Date: 11/02/04
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To: linux-kernel@vger.kernel.org Date: Tue, 2 Nov 2004 15:23:12 +0100
Hi List,
I'm having a rather vierd(!) NFS (+XFS) Problem. We have a disk-backup server
running an NFS server exporting an XFS filesystem to a number of clients
which use it for nightly backups.
These clients get a stale filehandle on the NFS mount after ~10 mins of
inactivity. Client and server are on the same LAN - no firewall.
- Here's the vierd thing: To get these mounts working again, I simply have to
run a "ls /exported_dir" serverside. - then all NFS mounts work again (for
~10 mins). This behavior is always reproducable. - I have absolutely no clue
to what is causing this behavior.
Example:
- Serverside: /mnt/backup/ is exported
- Serverside: "mkdir /mnt/backup/server_name"
- Clientside: /mnt/backup/server_name is mounted.
- Wait for ~10 mins without activity on the mount.
- Clientside: "ls /mnt/backup/server_name" gives: "bash: cd: server_name:
Stale NFS file" handle
- Serverside: "ls /mnt/backup/server_name"
- Clientside: "ls /mnt/backup/server_name" returns ok.
Any ideas anyone? - I will be happy to test and give more info!
System info:
Server kernel: Linux server_name 2.6.9 #1 SMP Thu Oct 21 01:13:17 CEST 2004
i686 unknown
Client kernels are different 2.4 and 2.6 kernels.
Client kernel log: "nfs_statfs: statfs error = 116" is repeated.
Server kernel log has no NFS related entries.
Tcpdump between server and client:
client > server: 132 getattr [|nfs] (DF) (ttl 64, id 458, len 160)
server > client reply ok 28 getattr ERROR: Stale NFS file handle (DF) (ttl 64,
id 17733, len 56)
client > server: 136 access [|nfs] (DF) (ttl 64, id 459, len 164)
server > client: reply ok 32 access ERROR: Stale NFS file handle attr: (DF)
(ttl 64, id 17734, len 60
-- Med venlig hilsen - Best regards - Meilleures salutations Anders Saaby Systems Engineer ------------------------------------------------ Cohaesio A/S - Maglebjergvej 5D - DK-2800 Lyngby Phone: +45 45 880 888 - Fax: +45 45 880 777 Mail: as@cohaesio.com - http://www.cohaesio.com ------------------------------------------------ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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