Hey guys! Thanks for your help last time. Aufs now compiles and works on the latest 2.6.32 kernel from CentOS 6. However, I am back to experiencing the problem I was seeing earlier. What happens is that different processes on the system get hung due to aufs. The functions that seem to get stuck are au_iget_locked () and si_read_lock().
[30360.463097] INFO: task cupsd:823 blocked for more than 120 seconds. [30360.463114] Tainted: G W -- ------------ 2.6.32-testing #9 [30360.463121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [30360.463130] cupsd D f5f7df44 0 823 1 0x00000000 [30360.463139] c2807340 00000082 f60ab8d0 f5f7df44 f5f7de00 00000004 f5f7dd80 c1122120 [30360.463148] f722fc80 f6546a30 c0a26976 00001b79 c1837340 f6546cd8 c1837340 c1837340 [30360.463157] c1837340 f6546cd8 c1832dc4 f5a2c000 00000000 c26cad10 f64da800 c113c2a4 [30360.463165] Call Trace: [30360.463179] [<c1122120>] ? do_sync_read+0x0/0x120 [30360.463187] [<c113c2a4>] ? iget_locked+0x34/0x150 [30360.463201] [<f9204a2f>] ? au_iget_locked+0xf/0x70 [aufs] [30360.463214] [<f9217be3>] ? au_new_inode+0x1c3/0x5f0 [aufs] [30360.463226] [<f9211bc5>] ? au_lkup_dentry+0x115/0x4a0 [aufs] [30360.463234] [<f920350a>] ? si_read_lock+0x5a/0x150 [aufs] [30360.463241] [<c1139395>] ? switch_names+0x95/0xa0 [30360.463249] [<c150efa5>] ? rwsem_down_failed_common+0x75/0x1b0 [30360.463261] [<f9219090>] ? aufs_lookup+0x0/0x1d0 [aufs] [30360.463266] [<c150f12a>] ? rwsem_down_read_failed+0x1a/0x24 [30360.463272] [<c150f167>] ? call_rwsem_down_read_failed+0x7/0xc [30360.463283] [<f9218ad0>] ? aufs_permission+0x0/0x2a0 [aufs] [30360.463288] [<c150e83a>] ? down_read+0xa/0x10 [30360.463298] [<f9218b0e>] ? aufs_permission+0x3e/0x2a0 [aufs] [30360.463309] [<f9219090>] ? aufs_lookup+0x0/0x1d0 [aufs] [30360.463314] [<c112fd3f>] ? __link_path_walk+0x6f/0x6e0 [30360.463319] [<c11309a1>] ? path_walk+0x51/0xc0 [30360.463324] [<c1131c0c>] ? do_filp_open+0x1ac/0xb80 [30360.463335] [<f920cda2>] ? au_cpup_attr_nlink+0xd2/0xe0 [aufs] [30360.463340] [<c11222a6>] ? rw_verify_area+0x66/0xe0 [30360.463345] [<c1122441>] ? vfs_write+0x121/0x160 [30360.463356] [<f920ba9b>] ? vfsub_write_u+0x2b/0x40 [aufs] [30360.463366] [<f9215234>] ? aufs_write+0x144/0x180 [aufs] [30360.463372] [<c113d6c8>] ? alloc_fd+0xb8/0xf0 [30360.463377] [<c111f846>] ? do_sys_open+0x56/0x130 [30360.463382] [<c111f99c>] ? sys_open+0x2c/0x40 [30360.463387] [<c150f8c4>] ? syscall_call+0x7/0xb How do I debug this? Regards Saurabh ------------------------------------------------------------------------------
