[LU-5728] mount.lustre: mount /dev/mapper/360080e50002ffd8200000251520130a4 at /mnt/home-mdt1 failed: Numerical result out of range

• Status: Closed
• Project: Lustre
• Affects Version/s: Lustre 2.5.3
• Type: Bug
• Priority: Minor
• Reporter: Li Wei (Inactive)
• Assignee: WC Triage
• Resolution: Fixed
• Severity: 3

Description

Lola's Lustre file system "home" was formatted with a recent master build. I downgraded it to b2_5 (lustre-b2_5 96) and immediately hit this MDT mount failure:

192.168.1.108: mount.lustre: mount /dev/mapper/360080e50002ffd8200000251520130a4 at /mnt/home-mdt1 failed: Numerical result out of range

This is the ldiskfs-based home-MDT0001. (On the other hand, home-MDT0000 is ZFS-based and was successfully mounted at the beginning.) From 192.168.1.108's dmesg:

LNet: HW CPU cores: 32, npartitions: 4
alg: No test for crc32 (crc32-table)
alg: No test for adler32 (adler32-zlib)
alg: No test for crc32 (crc32-pclmul)
padlock: VIA PadLock Hash Engine not detected.
Lustre: Lustre: Build Version: jenkins-arch=x86_64,build_type=server,distro=el6,ib_stack=inkernel-96-g3602066-PRISTINE-2.6.32-431.29.2.el6_lustre.g9835a2a.x86_64
LNet: Added LNI 192.168.1.108@o2ib10 [8/256/0/180]
LNet: Added LNI 192.168.1.108@o2ib20 [8/256/0/180]
LDISKFS-fs (dm-1): mounted filesystem with ordered data mode. quota=on. Opts:
Lustre: home-MDT0001: used disk, loading
LustreError: 11-0: home-MDT0000-osp-MDT0001: Communicating with 192.168.1.109@o2ib20, operation mds_connect failed with -114.
Lustre: 11037:0:(client.c:1918:ptlrpc_expire_one_request()) @@@ Request sent has failed due to network error: [sent 1413185499/real 1413185499]  req@ffff880828b98800 x1481832394653736/t0(0) o8->home-OST0000-osc-MDT0001@192.168.1.110@o2ib20:28/4 lens 400/544 e 0 to 1 dl 1413185504 ref 1 fl Rpc:XN/0/ffffffff rc 0/-1
LustreError: 10963:0:(lfsck_namespace.c:147:lfsck_namespace_load()) home-MDT0001-osd: fail to load lfsck_namespace, expected = 256, rc = -34
LustreError: 10963:0:(mdd_device.c:974:mdd_prepare()) home-MDD0001: failed to initialize lfsck: rc = -34
LustreError: 10963:0:(obd_mount_server.c:1738:server_fill_super()) Unable to start targets: -34
Lustre: Failing over home-MDT0001
Lustre: server umount home-MDT0001 complete
LustreError: 10963:0:(obd_mount.c:1325:lustre_fill_super()) Unable to mount  (-34)

Comments

[Andreas Dilger]

The server should never crash, regardless of what it reads from disk. However, formatting with one version of Lustre and then downgrading is not supported.

[Johann Lombardi (Inactive)]

Not supported.