Dear all, I already talked a little bit with Trond about my recent problems with NFS. I just switched from NFSv3 to NFSv4 after a server update because NFSv3 wasn't working correct any more (which seems to be fixed in the meantime). My kernel versions are: Server: 3.8.2-gentoo Workstation: 3.8.2-gentoo After switching to NFSv4 (which I wanted for a longer time as it should be faster etc.) at first I had some trouble with kernel oops on the client. As Trond told me to get rid of the nvidia driver to have an oops without taint I switched to nouveau and since then couldn't reproduce the kernel oops. So it seems like it was nvidias fault or a combination only triggered when the nvidia driver is loaded. But even with the nouveau driver NFSv4 isn't working really good, because I have lockups from time to time (randomly it seems) where most of the programs become unresponsive (as my home-dir is a NFS share). I checked with Magic SysRq + w and got the following examples: Mar 15 10:16:17 workstation kernel: [ 7188.311533] SysRq : Show Blocked State Mar 15 10:16:17 workstation kernel: [ 7188.313476] task PC stack pid father Mar 15 10:16:17 workstation kernel: [ 7188.313520] mozStorage #4 D ffff88041c7ddbc8 0 4349 1 0x00000000 Mar 15 10:16:17 workstation kernel: [ 7188.313525] ffff88041c7dd910 0000000000000086 ffff88041d0b4d30 ffff8803f92e9fd8 Mar 15 10:16:17 workstation kernel: [ 7188.313529] 0000000000011200 0000000000004000 ffff88040d205234 ffff88042f44d040 Mar 15 10:16:17 workstation kernel: [ 7188.313533] ffff88041c808140 ffff88041c96fa80 0000000000000000 0000000000000001 Mar 15 10:16:17 workstation kernel: [ 7188.313536] Call Trace: Mar 15 10:16:17 workstation kernel: [ 7188.313546] [<ffffffff81067b5b>] ? __queue_work+0x242/0x267 Mar 15 10:16:17 workstation kernel: [ 7188.313552] [<ffffffff8147a9f1>] ? rpc_execute+0xe/0x22 Mar 15 10:16:17 workstation kernel: [ 7188.313557] [<ffffffff814758d1>] ? rpc_run_task+0x6e/0x76 Mar 15 10:16:17 workstation kernel: [ 7188.313561] [<ffffffff810a438e>] ? __lock_page+0x66/0x66 Mar 15 10:16:17 workstation kernel: [ 7188.313566] [<ffffffff814a3482>] ? io_schedule+0x84/0xbf Mar 15 10:16:17 workstation kernel: [ 7188.313569] [<ffffffff810a4394>] ? sleep_on_page+0x6/0xa Mar 15 10:16:17 workstation kernel: [ 7188.313572] [<ffffffff814a1d19>] ? __wait_on_bit+0x3e/0x71 Mar 15 10:16:17 workstation kernel: [ 7188.313577] [<ffffffff81077070>] ? set_next_entity+0x32/0x4e Mar 15 10:16:17 workstation kernel: [ 7188.313581] [<ffffffff810a4570>] ? wait_on_page_bit+0x6e/0x73 Mar 15 10:16:17 workstation kernel: [ 7188.313585] [<ffffffff8106c6f6>] ? autoremove_wake_function+0x2a/0x2a Mar 15 10:16:17 workstation kernel: [ 7188.313589] [<ffffffff810a4df6>] ? grab_cache_page_write_begin+0xbd/0xcf Mar 15 10:16:17 workstation kernel: [ 7188.313593] [<ffffffff811b220c>] ? nfs_write_begin+0x86/0x1bb Mar 15 10:16:17 workstation kernel: [ 7188.313597] [<ffffffff810a4883>] ? generic_file_buffered_write+0x116/0x276 Mar 15 10:16:17 workstation kernel: [ 7188.313602] [<ffffffff810a555c>] ? __generic_file_aio_write+0x2aa/0x2da Mar 15 10:16:17 workstation kernel: [ 7188.313606] [<ffffffff810d6067>] ? __sb_start_write+0xb5/0xe7 Mar 15 10:16:17 workstation kernel: [ 7188.313610] [<ffffffff810a55f6>] ? generic_file_aio_write+0x6a/0xcf Mar 15 10:16:17 workstation kernel: [ 7188.313614] [<ffffffff811b286e>] ? nfs_file_write+0xa9/0x120 Mar 15 10:16:17 workstation kernel: [ 7188.313617] [<ffffffff810d456d>] ? do_sync_write+0x83/0xbb Mar 15 10:16:17 workstation kernel: [ 7188.313621] [<ffffffff810d4a78>] ? vfs_write+0xa6/0x112 Mar 15 10:16:17 workstation kernel: [ 7188.313624] [<ffffffff810d4caf>] ? sys_write+0x4b/0x73 Mar 15 10:16:17 workstation kernel: [ 7188.313628] [<ffffffff814a4a12>] ? system_call_fastpath+0x16/0x1b Mar 15 10:16:17 workstation kernel: [ 7188.313635] javaws D ffff88041c902068 0 5692 5691 0x00000006 Mar 15 10:16:17 workstation kernel: [ 7188.313638] ffff88041c901db0 0000000000000086 ffff88041d0b5f00 ffff8803f2c2dfd8 Mar 15 10:16:17 workstation kernel: [ 7188.313642] 0000000000011200 0000000000004000 ffff8803f2c2da50 ffffffff810a4101 Mar 15 10:16:17 workstation kernel: [ 7188.313645] ffffffff8110a4a2 ffff8803ed141a60 0007ffffffffffff 0000000000000000 Mar 15 10:16:17 workstation kernel: [ 7188.313649] Call Trace: Mar 15 10:16:17 workstation kernel: [ 7188.313652] [<ffffffff810a4101>] ? find_get_pages_tag+0x10b/0x13b Mar 15 10:16:17 workstation kernel: [ 7188.313657] [<ffffffff8110a4a2>] ? locks_remove_posix+0xa1/0xa9 Mar 15 10:16:17 workstation kernel: [ 7188.313661] [<ffffffff810ac764>] ? pagevec_lookup_tag+0x18/0x1f Mar 15 10:16:17 workstation kernel: [ 7188.313664] [<ffffffff810aabae>] ? write_cache_pages+0x131/0x2d4 Mar 15 10:16:17 workstation kernel: [ 7188.313667] [<ffffffff810a438e>] ? __lock_page+0x66/0x66 Mar 15 10:16:17 workstation kernel: [ 7188.313670] [<ffffffff814a3482>] ? io_schedule+0x84/0xbf Mar 15 10:16:17 workstation kernel: [ 7188.313674] [<ffffffff810a4394>] ? sleep_on_page+0x6/0xa Mar 15 10:16:17 workstation kernel: [ 7188.313676] [<ffffffff814a1d19>] ? __wait_on_bit+0x3e/0x71 Mar 15 10:16:17 workstation kernel: [ 7188.313680] [<ffffffff810a4101>] ? find_get_pages_tag+0x10b/0x13b Mar 15 10:16:17 workstation kernel: [ 7188.313683] [<ffffffff810a4570>] ? wait_on_page_bit+0x6e/0x73 Mar 15 10:16:17 workstation kernel: [ 7188.313687] [<ffffffff8106c6f6>] ? autoremove_wake_function+0x2a/0x2a Mar 15 10:16:17 workstation kernel: [ 7188.313690] [<ffffffff810a4620>] ? filemap_fdatawait_range+0x73/0x121 Mar 15 10:16:17 workstation kernel: [ 7188.313695] [<ffffffff810a5159>] ? filemap_write_and_wait_range+0x3b/0x4e Mar 15 10:16:17 workstation kernel: [ 7188.313699] [<ffffffff811cf02c>] ? nfs4_file_fsync+0x48/0x96 Mar 15 10:16:17 workstation kernel: [ 7188.313702] [<ffffffff810d3515>] ? filp_close+0x3b/0x6a Mar 15 10:16:17 workstation kernel: [ 7188.313707] [<ffffffff810ea3a4>] ? do_close_on_exec+0xa7/0xd9 Mar 15 10:16:17 workstation kernel: [ 7188.313712] [<ffffffff8110f8b4>] ? load_elf_binary+0x315/0x170b Mar 15 10:16:17 workstation kernel: [ 7188.313717] [<ffffffff810d8919>] ? search_binary_handler+0xba/0x26b Mar 15 10:16:17 workstation kernel: [ 7188.313720] [<ffffffff8110f59f>] ? load_elf_library+0x1ae/0x1ae Mar 15 10:16:17 workstation kernel: [ 7188.313724] [<ffffffff8110f296>] ? load_script+0x1aa/0x1b4 Mar 15 10:16:17 workstation kernel: [ 7188.313728] [<ffffffff810d91a2>] ? get_arg_page+0x79/0xbe Mar 15 10:16:17 workstation kernel: [ 7188.313732] [<ffffffff810d8919>] ? search_binary_handler+0xba/0x26b Mar 15 10:16:17 workstation kernel: [ 7188.313736] [<ffffffff8110f0ec>] ? bm_status_write+0xd0/0xd0 Mar 15 10:16:17 workstation kernel: [ 7188.313741] [<ffffffff810da39e>] ? do_execve_common.isra.32+0x2dd/0x3ee Mar 15 10:16:17 workstation kernel: [ 7188.313745] [<ffffffff810da6d1>] ? sys_execve+0x32/0x46 Mar 15 10:16:17 workstation kernel: [ 7188.313749] [<ffffffff814a4ec9>] ? stub_execve+0x69/0xc0 Or the other day: Mar 14 21:00:47 workstation kernel: [37645.540769] SysRq : Show Blocked State Mar 14 21:00:47 workstation kernel: [37645.541946] task PC stack pid father Mar 14 21:00:47 workstation kernel: [37645.541984] emerald D ffff88041c051a78 0 4208 4207 0x00000000 Mar 14 21:00:47 workstation kernel: [37645.541989] ffff88041c0517c0 0000000000000086 ffff88041d0b4150 ffff8803f797dfd8 Mar 14 21:00:47 workstation kernel: [37645.541993] 0000000000011200 0000000000004000 ffff8803580901d8 ffff88042f7e06e8 Mar 14 21:00:47 workstation kernel: [37645.541997] 0000000000000000 000022f400004040 0000000000000000 ffff8803f797dbe8 Mar 14 21:00:47 workstation kernel: [37645.542000] Call Trace: Mar 14 21:00:47 workstation kernel: [37645.542010] [<ffffffff813d8a8f>] ? sock_sendmsg+0x89/0xa4 Mar 14 21:00:47 workstation kernel: [37645.542016] [<ffffffff811b3213>] ? nfs_clear_inode+0x71/0x71 Mar 14 21:00:47 workstation kernel: [37645.542019] [<ffffffff811b326a>] ? nfs_wait_bit_killable+0x57/0x6f Mar 14 21:00:47 workstation kernel: [37645.542023] [<ffffffff814a1d19>] ? __wait_on_bit+0x3e/0x71 Mar 14 21:00:47 workstation kernel: [37645.542028] [<ffffffff8122d708>] ? _kstrtoull+0x2b/0x64 Mar 14 21:00:47 workstation kernel: [37645.542031] [<ffffffff814a1dbb>] ? out_of_line_wait_on_bit+0x6f/0x78 Mar 14 21:00:47 workstation kernel: [37645.542034] [<ffffffff811b3213>] ? nfs_clear_inode+0x71/0x71 Mar 14 21:00:47 workstation kernel: [37645.542039] [<ffffffff8106c6f6>] ? autoremove_wake_function+0x2a/0x2a Mar 14 21:00:47 workstation kernel: [37645.542043] [<ffffffff811ce7a0>] ? nfs4_wait_clnt_recover+0x29/0x39 Mar 14 21:00:47 workstation kernel: [37645.542046] [<ffffffff811ce7c3>] ? nfs4_client_recover_expired_lease+0x13/0x44 Mar 14 21:00:47 workstation kernel: [37645.542051] [<ffffffff811c6295>] ? _nfs4_do_open+0x50/0x376 Mar 14 21:00:47 workstation kernel: [37645.542055] [<ffffffff811c7eef>] ? verify_attr_len+0xc/0x27 Mar 14 21:00:47 workstation kernel: [37645.542060] [<ffffffff8147b285>] ? rpcauth_lookup_credcache+0xbf/0x1ff Mar 14 21:00:47 workstation kernel: [37645.542063] [<ffffffff811cf4e1>] ? nfs4_have_delegation+0x33/0x39 Mar 14 21:00:47 workstation kernel: [37645.542067] [<ffffffff811c661b>] ? nfs4_do_open+0x60/0xfe Mar 14 21:00:47 workstation kernel: [37645.542070] [<ffffffff811cf4e1>] ? nfs4_have_delegation+0x33/0x39 Mar 14 21:00:47 workstation kernel: [37645.542074] [<ffffffff811c66e0>] ? nfs4_atomic_open+0x27/0x47 Mar 14 21:00:47 workstation kernel: [37645.542077] [<ffffffff811b0a3b>] ? nfs_atomic_open+0x116/0x291 Mar 14 21:00:47 workstation kernel: [37645.542082] [<ffffffff810df865>] ? do_last.isra.46+0x373/0x9c2 Mar 14 21:00:47 workstation kernel: [37645.542085] [<ffffffff810dd1f1>] ? link_path_walk+0x76/0x78f Mar 14 21:00:47 workstation kernel: [37645.542089] [<ffffffff810dff67>] ? path_openat.isra.47+0xb3/0x3de Mar 14 21:00:47 workstation kernel: [37645.542093] [<ffffffff810e051a>] ? do_filp_open+0x2a/0x6e Mar 14 21:00:47 workstation kernel: [37645.542097] [<ffffffff810ea1ca>] ? __alloc_fd+0xe2/0xf5 Mar 14 21:00:47 workstation kernel: [37645.542101] [<ffffffff810d435e>] ? do_sys_open+0x103/0x18a Mar 14 21:00:47 workstation kernel: [37645.542105] [<ffffffff814a4a12>] ? system_call_fastpath+0x16/0x1b Mar 14 21:00:47 workstation kernel: [37645.542108] firefox D ffff88041c055bc8 0 4229 1 0x00000000 Mar 14 21:00:47 workstation kernel: [37645.542111] ffff88041c055910 0000000000000082 ffff88041c09af80 ffff8803f53fffd8 Mar 14 21:00:47 workstation kernel: [37645.542115] 0000000000011200 0000000000004000 ffff8802d7eed3c0 ffff88041c85da80 Mar 14 21:00:47 workstation kernel: [37645.542118] 0000000000000000 ffff8802d7eed2a0 ffff8803fcb25b88 ffffffff81067b5b Mar 14 21:00:47 workstation kernel: [37645.542122] Call Trace: Mar 14 21:00:47 workstation kernel: [37645.542126] [<ffffffff81067b5b>] ? __queue_work+0x242/0x267 Mar 14 21:00:47 workstation kernel: [37645.542130] [<ffffffff8147a9f1>] ? rpc_execute+0xe/0x22 Mar 14 21:00:47 workstation kernel: [37645.542135] [<ffffffff814758d1>] ? rpc_run_task+0x6e/0x76 Mar 14 21:00:47 workstation kernel: [37645.542139] [<ffffffff810a438e>] ? __lock_page+0x66/0x66 Mar 14 21:00:47 workstation kernel: [37645.542143] [<ffffffff814a3482>] ? io_schedule+0x84/0xbf Mar 14 21:00:47 workstation kernel: [37645.542146] [<ffffffff810a4394>] ? sleep_on_page+0x6/0xa Mar 14 21:00:47 workstation kernel: [37645.542149] [<ffffffff814a1d19>] ? __wait_on_bit+0x3e/0x71 Mar 14 21:00:47 workstation kernel: [37645.542152] [<ffffffff810a4101>] ? find_get_pages_tag+0x10b/0x13b Mar 14 21:00:47 workstation kernel: [37645.542156] [<ffffffff810a4570>] ? wait_on_page_bit+0x6e/0x73 Mar 14 21:00:47 workstation kernel: [37645.542159] [<ffffffff8106c6f6>] ? autoremove_wake_function+0x2a/0x2a Mar 14 21:00:47 workstation kernel: [37645.542163] [<ffffffff810a4620>] ? filemap_fdatawait_range+0x73/0x121 Mar 14 21:00:47 workstation kernel: [37645.542168] [<ffffffff810a5159>] ? filemap_write_and_wait_range+0x3b/0x4e Mar 14 21:00:47 workstation kernel: [37645.542171] [<ffffffff811cf02c>] ? nfs4_file_fsync+0x48/0x96 Mar 14 21:00:47 workstation kernel: [37645.542174] [<ffffffff810d4ad8>] ? vfs_write+0x106/0x112 Mar 14 21:00:47 workstation kernel: [37645.542178] [<ffffffff810d3515>] ? filp_close+0x3b/0x6a Mar 14 21:00:47 workstation kernel: [37645.542181] [<ffffffff810d30f2>] ? sys_close+0x18/0x42 Mar 14 21:00:47 workstation kernel: [37645.542184] [<ffffffff814a4a12>] ? system_call_fastpath+0x16/0x1b Mar 14 21:00:47 workstation kernel: [37645.542190] pool D ffff88040d8a3238 0 12641 3957 0x00000000 Mar 14 21:00:47 workstation kernel: [37645.542193] ffff88040d8a2f80 0000000000000086 ffffffff81681400 ffff8803f7bd5fd8 Mar 14 21:00:47 workstation kernel: [37645.542196] 0000000000011200 0000000000004000 0000000000000000 ffffffff811c7ce3 Mar 14 21:00:47 workstation kernel: [37645.542200] ffff880325497400 ffffffff811c8a82 ffff88040d8a2f80 ffff88041d281df8 Mar 14 21:00:47 workstation kernel: [37645.542203] Call Trace: Mar 14 21:00:47 workstation kernel: [37645.542207] [<ffffffff811c7ce3>] ? decode_attr_time+0xe/0x33 Mar 14 21:00:47 workstation kernel: [37645.542211] [<ffffffff811c8a82>] ? decode_getfattr_attrs+0x73f/0xa7f Mar 14 21:00:47 workstation kernel: [37645.542215] [<ffffffff814826fc>] ? xdr_inline_decode+0x31/0x95 Mar 14 21:00:47 workstation kernel: [37645.542219] [<ffffffff811c7eef>] ? verify_attr_len+0xc/0x27 Mar 14 21:00:47 workstation kernel: [37645.542222] [<ffffffff811cbecb>] ? decode_getfattr_generic.constprop.63+0x88/0x93 Mar 14 21:00:47 workstation kernel: [37645.542226] [<ffffffff811b3213>] ? nfs_clear_inode+0x71/0x71 Mar 14 21:00:47 workstation kernel: [37645.542229] [<ffffffff811b326a>] ? nfs_wait_bit_killable+0x57/0x6f Mar 14 21:00:47 workstation kernel: [37645.542232] [<ffffffff814a1d19>] ? __wait_on_bit+0x3e/0x71 Mar 14 21:00:47 workstation kernel: [37645.542235] [<ffffffff814a1dbb>] ? out_of_line_wait_on_bit+0x6f/0x78 Mar 14 21:00:47 workstation kernel: [37645.542238] [<ffffffff811b3213>] ? nfs_clear_inode+0x71/0x71 Mar 14 21:00:47 workstation kernel: [37645.542242] [<ffffffff8106c6f6>] ? autoremove_wake_function+0x2a/0x2a Mar 14 21:00:47 workstation kernel: [37645.542245] [<ffffffff811ce7a0>] ? nfs4_wait_clnt_recover+0x29/0x39 Mar 14 21:00:47 workstation kernel: [37645.542248] [<ffffffff811ce7c3>] ? nfs4_client_recover_expired_lease+0x13/0x44 Mar 14 21:00:47 workstation kernel: [37645.542252] [<ffffffff811c6295>] ? _nfs4_do_open+0x50/0x376 Mar 14 21:00:47 workstation kernel: [37645.542256] [<ffffffff811b3cde>] ? nfs_refresh_inode_locked+0x5a6/0x78f Mar 14 21:00:47 workstation kernel: [37645.542260] [<ffffffff811c661b>] ? nfs4_do_open+0x60/0xfe Mar 14 21:00:47 workstation kernel: [37645.542263] [<ffffffff811c66e0>] ? nfs4_atomic_open+0x27/0x47 Mar 14 21:00:47 workstation kernel: [37645.542267] [<ffffffff811cf135>] ? nfs4_file_open+0xbb/0x13e Mar 14 21:00:47 workstation kernel: [37645.542270] [<ffffffff811b0093>] ? nfs_do_access+0x1f0/0x22d Mar 14 21:00:47 workstation kernel: [37645.542273] [<ffffffff811cf07a>] ? nfs4_file_fsync+0x96/0x96 Mar 14 21:00:47 workstation kernel: [37645.542276] [<ffffffff810d33ae>] ? do_dentry_open+0x17a/0x222 Mar 14 21:00:47 workstation kernel: [37645.542280] [<ffffffff810d356e>] ? finish_open+0x2a/0x33 Mar 14 21:00:47 workstation kernel: [37645.542283] [<ffffffff810dfd1a>] ? do_last.isra.46+0x828/0x9c2 Mar 14 21:00:47 workstation kernel: [37645.542286] [<ffffffff810dd1f1>] ? link_path_walk+0x76/0x78f Mar 14 21:00:47 workstation kernel: [37645.542290] [<ffffffff810dff67>] ? path_openat.isra.47+0xb3/0x3de Mar 14 21:00:47 workstation kernel: [37645.542294] [<ffffffff810bf30b>] ? unmap_region+0xb0/0xc2 Mar 14 21:00:47 workstation kernel: [37645.542298] [<ffffffff810e051a>] ? do_filp_open+0x2a/0x6e Mar 14 21:00:47 workstation kernel: [37645.542301] [<ffffffff810ea1ca>] ? __alloc_fd+0xe2/0xf5 Mar 14 21:00:47 workstation kernel: [37645.542305] [<ffffffff810d435e>] ? do_sys_open+0x103/0x18a Mar 14 21:00:47 workstation kernel: [37645.542308] [<ffffffff814a4a12>] ? system_call_fastpath+0x16/0x1b Mar 14 21:00:47 workstation kernel: [37645.542310] pool D ffff88040d8a4fe8 0 12642 3957 0x00000000 Mar 14 21:00:47 workstation kernel: [37645.542313] ffff88040d8a4d30 0000000000000086 ffff88041d0b4740 ffff88040daedfd8 Mar 14 21:00:47 workstation kernel: [37645.542316] 0000000000011200 0000000000004000 0000000000000000 ffffffff811c7ce3 Mar 14 21:00:47 workstation kernel: [37645.542320] ffff8803f5986b00 ffffffff811c8a82 ffff88040d8a4d30 ffff88041ca023e8 Mar 14 21:00:47 workstation kernel: [37645.542323] Call Trace: Mar 14 21:00:47 workstation kernel: [37645.542327] [<ffffffff811c7ce3>] ? decode_attr_time+0xe/0x33 Mar 14 21:00:47 workstation kernel: [37645.542330] [<ffffffff811c8a82>] ? decode_getfattr_attrs+0x73f/0xa7f Mar 14 21:00:47 workstation kernel: [37645.542334] [<ffffffff814826fc>] ? xdr_inline_decode+0x31/0x95 Mar 14 21:00:47 workstation kernel: [37645.542337] [<ffffffff811c7eef>] ? verify_attr_len+0xc/0x27 Mar 14 21:00:47 workstation kernel: [37645.542341] [<ffffffff811cbecb>] ? decode_getfattr_generic.constprop.63+0x88/0x93 Mar 14 21:00:47 workstation kernel: [37645.542344] [<ffffffff811b3213>] ? nfs_clear_inode+0x71/0x71 Mar 14 21:00:47 workstation kernel: [37645.542348] [<ffffffff811b326a>] ? nfs_wait_bit_killable+0x57/0x6f Mar 14 21:00:47 workstation kernel: [37645.542350] [<ffffffff814a1d19>] ? __wait_on_bit+0x3e/0x71 Mar 14 21:00:47 workstation kernel: [37645.542353] [<ffffffff814a1dbb>] ? out_of_line_wait_on_bit+0x6f/0x78 Mar 14 21:00:47 workstation kernel: [37645.542358] [<ffffffff8105f1cb>] ? internal_add_timer+0xd/0x28 Mar 14 21:00:47 workstation kernel: [37645.542361] [<ffffffff811b3213>] ? nfs_clear_inode+0x71/0x71 Mar 14 21:00:47 workstation kernel: [37645.542364] [<ffffffff8106c6f6>] ? autoremove_wake_function+0x2a/0x2a Mar 14 21:00:47 workstation kernel: [37645.542368] [<ffffffff811ce7a0>] ? nfs4_wait_clnt_recover+0x29/0x39 Mar 14 21:00:47 workstation kernel: [37645.542371] [<ffffffff811ce7c3>] ? nfs4_client_recover_expired_lease+0x13/0x44 Mar 14 21:00:47 workstation kernel: [37645.542375] [<ffffffff811c6295>] ? _nfs4_do_open+0x50/0x376 Mar 14 21:00:47 workstation kernel: [37645.542379] [<ffffffff811c661b>] ? nfs4_do_open+0x60/0xfe Mar 14 21:00:47 workstation kernel: [37645.542382] [<ffffffff811c66e0>] ? nfs4_atomic_open+0x27/0x47 Mar 14 21:00:47 workstation kernel: [37645.542386] [<ffffffff811cf135>] ? nfs4_file_open+0xbb/0x13e Mar 14 21:00:47 workstation kernel: [37645.542389] [<ffffffff811b0093>] ? nfs_do_access+0x1f0/0x22d Mar 14 21:00:47 workstation kernel: [37645.542392] [<ffffffff811cf07a>] ? nfs4_file_fsync+0x96/0x96 Mar 14 21:00:47 workstation kernel: [37645.542395] [<ffffffff810d33ae>] ? do_dentry_open+0x17a/0x222 Mar 14 21:00:47 workstation kernel: [37645.542398] [<ffffffff810d356e>] ? finish_open+0x2a/0x33 Mar 14 21:00:47 workstation kernel: [37645.542401] [<ffffffff810dfd1a>] ? do_last.isra.46+0x828/0x9c2 Mar 14 21:00:47 workstation kernel: [37645.542404] [<ffffffff810dd1f1>] ? link_path_walk+0x76/0x78f Mar 14 21:00:47 workstation kernel: [37645.542408] [<ffffffff810dff67>] ? path_openat.isra.47+0xb3/0x3de Mar 14 21:00:47 workstation kernel: [37645.542412] [<ffffffff810bf30b>] ? unmap_region+0xb0/0xc2 Mar 14 21:00:47 workstation kernel: [37645.542415] [<ffffffff810e051a>] ? do_filp_open+0x2a/0x6e Mar 14 21:00:47 workstation kernel: [37645.542419] [<ffffffff810ea1ca>] ? __alloc_fd+0xe2/0xf5 Mar 14 21:00:47 workstation kernel: [37645.542422] [<ffffffff810d435e>] ? do_sys_open+0x103/0x18a Mar 14 21:00:47 workstation kernel: [37645.542426] [<ffffffff814a4a12>] ? system_call_fastpath+0x16/0x1b Mar 14 21:00:47 workstation kernel: [37645.542430] ffff880358d71db0 0000000000000086 ffff88041d0b5f00 ffff8803f6b5dfd8 Mar 14 21:00:47 workstation kernel: [37645.542434] 0000000000011200 0000000000004000 ffff88041c09af80 ffff88042f491200 Mar 14 21:00:47 workstation kernel: [37645.542437] ffff88041ca04150 ffff88042f591200 ffff880358d71db0 ffff88041ca04198 Mar 14 21:00:47 workstation kernel: [37645.542440] Call Trace: Mar 14 21:00:47 workstation kernel: [37645.542444] [<ffffffff81077989>] ? check_preempt_wakeup+0xe6/0x15e Mar 14 21:00:47 workstation kernel: [37645.542448] [<ffffffff8107331b>] ? check_preempt_curr+0x25/0x62 Mar 14 21:00:47 workstation kernel: [37645.542452] [<ffffffff81073366>] ? ttwu_do_wakeup+0xe/0x7e Mar 14 21:00:47 workstation kernel: [37645.542455] [<ffffffff811b3213>] ? nfs_clear_inode+0x71/0x71 Mar 14 21:00:47 workstation kernel: [37645.542459] [<ffffffff811b326a>] ? nfs_wait_bit_killable+0x57/0x6f Mar 14 21:00:47 workstation kernel: [37645.542461] [<ffffffff814a1d19>] ? __wait_on_bit+0x3e/0x71 Mar 14 21:00:47 workstation kernel: [37645.542464] [<ffffffff814a1dbb>] ? out_of_line_wait_on_bit+0x6f/0x78 Mar 14 21:00:47 workstation kernel: [37645.542468] [<ffffffff811b3213>] ? nfs_clear_inode+0x71/0x71 Mar 14 21:00:47 workstation kernel: [37645.542471] [<ffffffff8106c6f6>] ? autoremove_wake_function+0x2a/0x2a Mar 14 21:00:47 workstation kernel: [37645.542474] [<ffffffff811ce7a0>] ? nfs4_wait_clnt_recover+0x29/0x39 Mar 14 21:00:47 workstation kernel: [37645.542478] [<ffffffff811ce7c3>] ? nfs4_client_recover_expired_lease+0x13/0x44 Mar 14 21:00:47 workstation kernel: [37645.542481] [<ffffffff811c6295>] ? _nfs4_do_open+0x50/0x376 Mar 14 21:00:47 workstation kernel: [37645.542485] [<ffffffff811b3cde>] ? nfs_refresh_inode_locked+0x5a6/0x78f Mar 14 21:00:47 workstation kernel: [37645.542488] [<ffffffff811c661b>] ? nfs4_do_open+0x60/0xfe Mar 14 21:00:47 workstation kernel: [37645.542492] [<ffffffff811c66e0>] ? nfs4_atomic_open+0x27/0x47 Mar 14 21:00:47 workstation kernel: [37645.542495] [<ffffffff811cf135>] ? nfs4_file_open+0xbb/0x13e Mar 14 21:00:47 workstation kernel: [37645.542499] [<ffffffff811cf4e1>] ? nfs4_have_delegation+0x33/0x39 Mar 14 21:00:47 workstation kernel: [37645.542502] [<ffffffff811affae>] ? nfs_do_access+0x10b/0x22d Mar 14 21:00:47 workstation kernel: [37645.542505] [<ffffffff811cf07a>] ? nfs4_file_fsync+0x96/0x96 Mar 14 21:00:47 workstation kernel: [37645.542508] [<ffffffff810d33ae>] ? do_dentry_open+0x17a/0x222 Mar 14 21:00:47 workstation kernel: [37645.542511] [<ffffffff810d356e>] ? finish_open+0x2a/0x33 Mar 14 21:00:47 workstation kernel: [37645.542514] [<ffffffff810dfd1a>] ? do_last.isra.46+0x828/0x9c2 Mar 14 21:00:47 workstation kernel: [37645.542518] [<ffffffff810dd1f1>] ? link_path_walk+0x76/0x78f Mar 14 21:00:47 workstation kernel: [37645.542521] [<ffffffff810dff67>] ? path_openat.isra.47+0xb3/0x3de Mar 14 21:00:47 workstation kernel: [37645.542525] [<ffffffff810bf30b>] ? unmap_region+0xb0/0xc2 Mar 14 21:00:47 workstation kernel: [37645.542528] [<ffffffff810e051a>] ? do_filp_open+0x2a/0x6e Mar 14 21:00:47 workstation kernel: [37645.542532] [<ffffffff810ea1ca>] ? __alloc_fd+0xe2/0xf5 Mar 14 21:00:47 workstation kernel: [37645.542535] [<ffffffff810d435e>] ? do_sys_open+0x103/0x18a Mar 14 21:00:47 workstation kernel: [37645.542539] [<ffffffff814a4a12>] ? system_call_fastpath+0x16/0x1b and some more.... After waiting some minutes it sometimes recovers from these blocks and I can continue to work. Today the block came after about 2 hours. So I switched to NFSv3 again just now to see if that is more stable. When the blocks are happing there is nothing in the logs on server nor on client side. Do you have any hints or ideas? Best regards and thank you in advance, Matthias Jansen
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