[Lustre-discuss] ost mount failed

[Aaron Knister]

When you say they can communicate, did you try lctl ping?

On Feb 21, 2008, at 4:57 AM, Tomec Martin wrote:

>
>
> Isaac Huang napsal(a):
>> On Wed, Feb 20, 2008 at 11:19:06PM +0100, Tomec Martin wrote:
>>> According to tutorial I started MGS and MDT on first machine (with  
>>> IP
>>> 192.168.2.55):
>>> mkfs.lustre --mgs /dev/sdb1
>>> mkdir -p /mnt/mgs
>>> mount -t lustre /dev/sdb1 /mnt/mgs
>>> mkfs.lustre --fsname=testfs --mdt --mgsnode=192.168.2.55 at tcp0 /dev/ 
>>> sdb2
>>> mkdir -p /mnt/test/mdt
>>> mount -t lustre /dev/sdb2 /mnt/test/mdt
>>>
>>> On second machine I tried start OST with:
>>> mkfs.lustre --fsname=testfs --ost --mgsnode=192.168.2.55 at tcp0 /dev/ 
>>> sdb
>>> mkdir -p /mnt/test/ost0
>>> mount -t lustre /dev/sdb /mnt/test/ost0
>>>
>>> but got this error:
>>> mount.lustre: mount /dev/sdb at /mnt/test/ost0 failed: Input/ 
>>> output error
>>> Is the MGS running?
>>
>> Was there any error messages in 'dmesg' on the node?
>>
>> Isaac
>>
>
> Yes, log is below. Maybe it can be some incompatibility with Centos  
> 5 (I
> used packages for Red Hat 5)
>
> Lustre: OBD class driver, info at clusterfs.com
>         Lustre Version: 1.6.4.2
>         Build Version:
> 1.6.4.2-19691231190000-PRISTINE-.cache.build.BUILD.lustre- 
> kernel-2.6.18.lustre.linux-2.6.18-8.1.14.el5_lustre.1.6.4.2smp
> Lustre: Added LNI 192.168.2.56 at tcp [8/256]
> Lustre: Accept secure, port 988
> Lustre: Lustre Client File System; info at clusterfs.com
> kjournald starting.  Commit interval 5 seconds
> LDISKFS FS on sdb, internal journal
> LDISKFS-fs: mounted filesystem with ordered data mode.
> SELinux: initialized (dev sdb, type ldiskfs), not configured for  
> labeling
> kjournald starting.  Commit interval 5 seconds
> LDISKFS FS on sdb, internal journal
> LDISKFS-fs: mounted filesystem with ordered data mode.
> LDISKFS-fs: file extents enabled
> LDISKFS-fs: mballoc enabled
> SELinux: initialized (dev sdb, type ldiskfs), not configured for  
> labeling
>
> LustreError: 2891:0:(client.c:975:ptlrpc_expire_one_request()) @@@
> timeout (sent at 1203589568, 5s ago)  req at cbaa7600 x1/t0
> o250->MGS at MGC192.168.2.55@tcp_0:26 lens 240/272 ref 1 fl Rpc:/0/0 rc  
> 0/-22
> LustreError: 2858:0:(obd_mount.c:954:server_register_target())
> registration with the MGS failed (-5)
> LustreError: 2858:0:(obd_mount.c:1054:server_start_targets()) Required
> registration failed for testfs-OSTffff: -5
> LustreError: 15f-b: Communication error with the MGS.  Is the MGS  
> running?
> LustreError: 2858:0:(obd_mount.c:1570:server_fill_super()) Unable to
> start targets: -5
> LustreError: 2858:0:(obd_mount.c:1368:server_put_super()) no obd
> testfs-OSTffff
> LustreError: 2858:0:(obd_mount.c:119:server_deregister_mount())
> testfs-OSTffff not registered
>
> LDISKFS-fs: mballoc: 0 blocks 0 reqs (0 success)
> LDISKFS-fs: mballoc: 0 extents scanned, 0 goal hits, 0 2^N hits, 0
> breaks, 0 lost
> LDISKFS-fs: mballoc: 0 generated and it took 0
> LDISKFS-fs: mballoc: 0 preallocated, 0 discarded
> Lustre: server umount testfs-OSTffff complete
> LustreError: 2858:0:(obd_mount.c:1924:lustre_fill_super()) Unable to
> mount  (-5)
>
>>> Machines can comunicate and MGS is probably running.
>>> It is Lustre 1.6.4.2 and kernel 2.6.18
>>> Have you any ideas where could be a problem?
>>> _______________________________________________
>>> Lustre-discuss mailing list
>>> Lustre-discuss at lists.lustre.org
>>> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>>
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Aaron Knister
Associate Systems Analyst
Center for Ocean-Land-Atmosphere Studies

(301) 595-7000
aaron at iges.org