Here are more informations: if I try to mount the filesystem on the client I get similar messages as from the failing conf_param command. It seems one have to remove this failed configuration but how? Here the syslog output on the client:
kernel: [ 4203.506437] LustreError: 3698:0: (obd_mount.c:1340:lustre_fill_super()) Unable to mount (-2) kernel: [ 5028.547095] LustreError: 3830:0: (obd_config.c:1202:class_process_config()) no device for: hiskp3-OST0000-osc- ffff880416680800 kernel: [ 5028.547105] LustreError: 3830:0: (obd_config.c:1606:class_config_llog_handler()) MGC192.168.128.200@o2ib: cfg command failed: rc = -22 kernel: [ 5028.547112] Lustre: cmd=cf00f 0:hiskp3-OST0000-osc 1:osc.max_pages_per_rpc=256 kernel: [ 5028.547112] kernel: [ 5028.547156] LustreError: 15b-f: MGC192.168.128.200@o2ib: The configuration from log 'hiskp3-client'failed from the MGS (-22). Make sure this client and the MGS are running compatible versions of Lustre. kernel: [ 5028.547407] LustreError: 1680:0:(lov_obd.c:946:lov_cleanup()) hiskp3-clilov-ffff880416680800: lov tgt 1 not cleaned! deathrow=0, lovrc=1 kernel: [ 5028.547415] LustreError: 1680:0:(lov_obd.c:946:lov_cleanup()) Skipped 3 previous similar messages kernel: [ 5028.550906] Lustre: Unmounted hiskp3-client kernel: [ 5028.551407] LustreError: 3815:0: (obd_mount.c:1340:lustre_fill_super()) Unable to mount (-22) On Wednesday 15 November 2017 16:06:29 Harald van Pee wrote: > Dear all, > > I want to set max_pages_per_rpc to 64 instead of 256 > lustre mgs/mdt version 2.53 > lustre oss version 2.53 > lustre client 2.6 > > on client I have done: > lctl get_param osc.hiskp3-OST*.max_pages_per_rpc > osc.hiskp3-OST0001-osc-ffff88105dba4800.max_pages_per_rpc=256 > osc.hiskp3-OST0002-osc-ffff88105dba4800.max_pages_per_rpc=256 > osc.hiskp3-OST0003-osc-ffff88105dba4800.max_pages_per_rpc=256 > osc.hiskp3-OST0004-osc-ffff88105dba4800.max_pages_per_rpc=256 > lctl set_param osc.hiskp3-OST*.max_pages_per_rpc=64 > > this works, but after remount I get again 256 therefore I want to make it > permant with > lctl conf_param hiskp3-OST*.osc.max_pages_per_rpc=64 > > But I get the message, that this command have to be given on mdt > unfortunately I go to our combined mgs/mdt and get > > Lustre: Setting parameter hiskp3-OST0000-osc.osc.max_pages_per_rpc in log > hiskp3-client > LustreError: 956:0:(obd_config.c:1221:class_process_config()) no device > for: hiskp3-OST0000-osc-MDT0000 > LustreError: 956:0:(obd_config.c:1591:class_config_llog_handler()) > MGC192.168.128.200@o2ib: cfg command failed: rc = -22 > Lustre: cmd=cf00f 0:hiskp3-OST0000-osc-MDT0000 > 1:osc.max_pages_per_rpc=64 > > than I can not mount client and want to go back > lctl set_param osc.hiskp3-OST*.max_pages_per_rpc=64 > > Lustre: Modifying parameter hiskp3-OST0000-osc.osc.max_pages_per_rpc in log > hiskp3-client > Lustre: Skipped 1 previous similar message > LustreError: 966:0:(obd_config.c:1221:class_process_config()) no device > for: hiskp3-OST0000-osc-MDT0000 > LustreError: 966:0:(obd_config.c:1591:class_config_llog_handler()) > MGC192.168.128.200@o2ib: cfg command failed: rc = -22 > Lustre: cmd=cf00f 0:hiskp3-OST0000-osc-MDT0000 > 1:osc.max_pages_per_rpc=256 > > obviously what I have done was completly wrong and I can no longer mount a > client, mounted clients are working. > How can I get it back working? > hiskp3-MDT0000 ist the label of the mgs/mdt but hiskp3-OST0000-osc-MDT0000 > seems to be incorrect > > What I have to do to get the mgs/mdt working again? > Its your production cluster > Any help is welcome > > Best > Harald > > > > > > > _______________________________________________ > lustre-discuss mailing list > lustre-discuss@lists.lustre.org > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org -- Harald van Pee Helmholtz-Institut fuer Strahlen- und Kernphysik der Universitaet Bonn Nussallee 14-16 - 53115 Bonn - Tel +49-228-732213 - Fax +49-228-732505 mail: p...@hiskp.uni-bonn.de _______________________________________________ lustre-discuss mailing list lustre-discuss@lists.lustre.org http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org