Hi, we use Ubuntu 10.04.3 LTS and often get a traceback for NFS indicating that the daemon hangs for several seconds. At the same time some client machines cannot access the server and have to wait. After some minutes everything goes on. What could cause the problem? Is there anything we should change? Here is the message in the kernel log: [330573.697121] INFO: task nfsd:1376 blocked for more than 120 seconds. [330573.708375] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [330573.730773] nfsd D 0000000000000001 0 1376 2 0x00000000 [330573.730776] ffff88061c21bdc0 0000000000000046 0000000000015f00 0000000000015f00 [330573.730779] ffff88061c111ad0 ffff88061c21bfd8 0000000000015f00 ffff88061c111700 [330573.730781] 0000000000015f00 ffff88061c21bfd8 0000000000015f00 ffff88061c111ad0 [330573.730784] Call Trace: [330573.730788] [<ffffffff81559e67>] __mutex_lock_slowpath+0x107/0x190 [330573.730796] [<ffffffffa012300f>] ? svc_authorise+0x3f/0x50 [sunrpc] [330573.730799] [<ffffffff81559863>] mutex_lock+0x23/0x50 [330573.730807] [<ffffffffa012d478>] svc_send+0x58/0xe0 [sunrpc] [330573.730809] [<ffffffff8105df90>] ? default_wake_function+0x0/0x20 [330573.730817] [<ffffffffa011faec>] svc_process+0x11c/0x150 [sunrpc] [330573.730821] [<ffffffffa0184ae5>] nfsd+0xc5/0x170 [nfsd] [330573.730830] [<ffffffffa0184a20>] ? nfsd+0x0/0x170 [nfsd] [330573.730832] [<ffffffff81085db6>] kthread+0x96/0xa0 [330573.730835] [<ffffffff810141aa>] child_rip+0xa/0x20 [330573.730837] [<ffffffff81085d20>] ? kthread+0x0/0xa0 [330573.730839] [<ffffffff810141a0>] ? child_rip+0x0/0x20 -- Christoph Bartoschek -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
