MGS/MDT on one machine (172.20.24.227) OST on one machine (172.20.24.228) Lustre client on one machine (172.20.24.217) MGS/MDT 'lctl dl' Output: 0 UP osd-zfs mgsZFS-MDT0000-osd mgsZFS-MDT0000-osd_UUID 8 1 UP mgs MGS MGS 7 2 UP mgc MGC172.20.24.227@tcp e681e692-c8aa-5c2b-b88b-3dacbcb2d20a 5 3 UP mds MDS MDS_uuid 3 4 UP lod mgsZFS-MDT0000-mdtlov mgsZFS-MDT0000-mdtlov_UUID 4 5 UP mdt mgsZFS-MDT0000 mgsZFS-MDT0000_UUID 5 6 UP mdd mgsZFS-MDD0000 mgsZFS-MDD0000_UUID 4 7 UP qmt mgsZFS-QMT0000 mgsZFS-QMT0000_UUID 4 8 UP lwp mgsZFS-MDT0000-lwp-MDT0000 mgsZFS-MDT0000-lwp-MDT0000_UUID 5 OST 'lctl dl' Output: 0 UP osd-zfs ossZFS-OST0000-osd ossZFS-OST0000-osd_UUID 5 1 UP mgc MGC172.20.24.227@tcp 441d1cfe-e390-8e3a-d88c-bd9d5d74d0e0 5 2 UP ost OSS OSS_uuid 3 3 UP obdfilter ossZFS-OST0000 ossZFS-OST0000_UUID 3 The client just hangs forever once the following comment is executed: mount -t lustre 172.20.24.227@tcp0:/mgsZFS /mnt/lustre. The connection list shows both the OST and the client connected. MGS/MDT Connection list: 12345-172.20.24.228@tcp I[0]mgs01.localdomain ->oss01.localdomain:1021 87040/369280 nonagle 12345-172.20.24.228@tcp O[0]mgs01.localdomain ->oss01.localdomain:1022 87040/369280 nonagle 12345-172.20.24.228@tcp C[0]mgs01.localdomain ->oss01.localdomain:1023 87040/369280 nonagle 12345-172.20.24.217@tcp I[0]mgs01.Localdomain ->lc01.localdomain:1021 87040/369280 nonagle 12345-172.20.24.217@tcp O[0]mgs01.localdomain ->lc01.localdomain:1022 87040/369280 nonagle 12345-172.20.24.217@tcp C[0]mgs01.localdomain ->lc01.localdomain:1023 87040/369280 nonagle MGS/MDT /var/log/messages entries upon mount from client: Dec 29 09:44:51 mgs01 kernel: Lustre: MGS: Connection restored to 1557f55a-2cae-e908-6533-58d54eb4a274 (at 172.20.24.217@tcp<mailto:172.20.24.217@tcp>) Lustre Client /var/log/messages entries upon mount to MGS/MDT: Dec 29 09:44:55 lc01 kernel: LustreError: 6996:0:(lmv_obd.c:1402:lmv_statfs()) can't stat MDS #0 (mgsZFS-MDT0000-mdc-ffff8800ede07800), error -11 Dec 29 09:44:55 lc01 kernel: Lustre: Unmounted mgsZFS-client Dec 29 09:44:55 lc01 kernel: LustreError: 6996:0:(obd_mount.c:1449:lustre_fill_super()) Unable to mount (-11) Any thoughts on why an error -11 is being generated? I couldn't find any info on that. Jeff Slapp | Director, Systems Engineering and Solution Architecture DataCore Software Corporation Corporate Park 6300 NW 5th Way Ft. Lauderdale, FL 33309 http://www.datacore.com<http://www.datacore.com/> THE DATA INFRASTRUCTURE SOFTWARE COMPANY