[Lustre-discuss] Lustre client not mount after upgrade

[Ekaterina Popova]

Hello!
I have upgraded Lustre client on my machine till 2.1.50 version. Since i 
can't mount client.

mount -t lustre 192.168.1.10 at tcp0:/lihep /lustre
mount.lustre: mount  192.168.1.10 at tcp0:/lihep at /lustre failed: No such 
file or directory
Is the MGS specification correct?
Is the filesystem name correct?
If upgrading, is the copied client log valid? (see upgrade docs)

At syslog:

Oct 25 08:34:00 draco kernel: [73630.215855] Lustre: Lustre: Build 
Version: v2_1_50_0-ga39459d-CHANGED-2.6.32
Oct 25 08:34:00 draco kernel: [73630.275393] Lustre: Added LNI 
192.168.1.1 at tcp [8/256/0/180]
Oct 25 08:34:00 draco kernel: [73630.275422] Lustre: Accept secure, port 988
Oct 25 08:34:00 draco kernel: [73630.314580] Lustre: Lustre OSC module 
(ffffffffa08973c0).
Oct 25 08:34:00 draco kernel: [73630.328461] Lustre: Lustre LOV module 
(ffffffffa08f2820).
Oct 25 08:34:00 draco kernel: [73630.347306] Lustre: Lustre client 
module (ffffffffa0987880).
Oct 25 08:34:00 draco kernel: [73630.356016] Lustre: import 
MGC192.168.1.10 at tcp->MGC192.168.1.10 at tcp_0 netid 20000: select flavor null
Oct 25 08:34:00 draco kernel: [73630.358509] Lustre: 
MGC192.168.1.10 at tcp: Reactivating import
Oct 25 08:34:00 draco kernel: [73630.370731] LustreError: 
23799:0:(ldlm_lib.c:382:client_obd_setup()) can't add initial connection
Oct 25 08:34:00 draco kernel: [73630.370742] LustreError: 
23799:0:(obd_config.c:522:class_setup()) setup 
lihep-MDT0000-mdc-ffff8801bb901000 failed (-2)
Oct 25 08:34:00 draco kernel: [73630.370745] LustreError: 
23799:0:(obd_config.c:1361:class_config_llog_handler()) Err -2 on cfg 
command:
Oct 25 08:34:00 draco kernel: [73630.370749] Lustre:    cmd=cf003 
0:lihep-MDT0000-mdc  1:lihep-MDT0000_UUID  2:10.1.1.10 at tcp1
Oct 25 08:34:00 draco kernel: [73630.370766] LustreError: 15c-8: 
MGC192.168.1.10 at tcp: The configuration from log 'lihep-client' failed 
(-2). This may be the result of communication errors between this node 
and the MGS, a bad configuration, or other errors. See the syslog for 
more information.
Oct 25 08:34:00 draco kernel: [73630.370771] LustreError: 
23733:0:(llite_lib.c:949:ll_fill_super()) Unable to process log: -2
Oct 25 08:34:00 draco kernel: [73630.370851] LustreError: 
23733:0:(obd_config.c:567:class_cleanup()) Device 3 not setup
Oct 25 08:34:00 draco kernel: [73630.387299] LustreError: 
23733:0:(ldlm_request.c:1173:ldlm_cli_cancel_req()) Got rc -108 from 
cancel RPC: canceling anyway
Oct 25 08:34:00 draco kernel: [73630.387304] LustreError: 
23733:0:(ldlm_request.c:1800:ldlm_cli_cancel_list()) 
ldlm_cli_cancel_list: -108
Oct 25 08:34:00 draco kernel: [73630.387897] Lustre: client 
ffff8801bb901000 umount complete
Oct 25 08:34:00 draco kernel: [73630.387901] LustreError: 
23733:0:(obd_mount.c:2306:lustre_fill_super()) Unable to mount  (-2)

I don't upgrade MDS/OSS. Their version is 2.0.

Can I fix client? What is the reason of this error?

With regards,
Ekaterina Popova