[Lustre-discuss] Client hangs when reading from Lustre ...

[Klaus Steden]

Thanks Andreas ... That would make sense, although the only error message
(or, message vaguely resembling an error message) that I could find was this
one:

-- cut --
/var/log/messages.1:Feb  1 09:28:09 tiger-oss-0-0 kernel: LDISKFS-fs error
(device sdb): ldiskfs_journal_start_sb: Detected aborted journal
-- cut --

I'm assuming that's causing the problem -- but what's the next step? Punt
all the clients, stop Lustre, and run e2fsck on the affected device?

Klaus

On 2/4/08 3:22 PM, "Andreas Dilger" <adilger at Sun.COM>did etch on stone
tablets:

> On Feb 04, 2008  13:54 -0800, Klaus Steden wrote:
>> I'm trying to figure out something odd ... a node in my cluster hangs when I
>> run 'df', or 'find -exec file {}' or other commands like that.
>> 
>> No other clients in the cluster exhibit the same behaviour. I'm seeing a lot
>> of messages like this in its syslog:
>> 
>> -- cut --
>> Feb  4 13:51:37 tiger-0-6 kernel: LustreError:
>> 5827:0:(client.c:576:ptlrpc_check_status()) @@@ type == PTL_RPC_MSG_ERR, err
>> == -30 req at 000001010d30e400 x9218/t0
>> o8->ost1_UUID at tiger-oss-0-0.local_UUID:6 lens 240/272 ref 1 fl Rpc:R/0/40000
>> rc 0/-30
>> -- cut --
> 
> /usr/include/asm/errno.h says -30 = -EROFS.  That means your OST filesystem
> has likely been remounted read-only because of a detected filesystem error.
> Check your /var/log/messages for something like "LDISKFS-fs error ...:
> Remounting filesystem read-only".  This will be accompanied by the reason
> the filesystem is read-only.
> 
> Cheers, Andreas
> --
> Andreas Dilger
> Sr. Staff Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
>