It may be related to LVM - I get the issue on my root disk. This is mounted via an LVM. If I run an update the update stalls with these errors
kernel: [ 2281.420086] dpkg D 0000000000000000 0 24196 24133 0x00000000 [ 2281.420090] ffff880168c87db8 0000000000000082 0000000000015bc0 0000000000015bc0 [ 2281.420094] ffff88021a7931a0 ffff880168c87fd8 0000000000015bc0 ffff88021a792de0 [ 2281.420097] 0000000000015bc0 ffff880168c87fd8 0000000000015bc0 ffff88021a7931a0 [ 2281.420100] Call Trace: [ 2281.420109] [<ffffffff81166d80>] ? bdi_sched_wait+0x0/0x20 [ 2281.420112] [<ffffffff81166d8e>] bdi_sched_wait+0xe/0x20 [ 2281.420117] [<ffffffff815591df>] __wait_on_bit+0x5f/0x90 [ 2281.420119] [<ffffffff81166d80>] ? bdi_sched_wait+0x0/0x20 [ 2281.420122] [<ffffffff81559288>] out_of_line_wait_on_bit+0x78/0x90 [ 2281.420126] [<ffffffff810850d0>] ? wake_bit_function+0x0/0x40 [ 2281.420129] [<ffffffff81166d44>] ? bdi_queue_work+0xa4/0xe0 [ 2281.420131] [<ffffffff811680ef>] bdi_sync_writeback+0x6f/0x80 [ 2281.420134] [<ffffffff81168120>] sync_inodes_sb+0x20/0x30 [ 2281.420137] [<ffffffff8116bc92>] __sync_filesystem+0x82/0x90 [ 2281.420140] [<ffffffff8116bd79>] sync_filesystems+0xd9/0x130 [ 2281.420142] [<ffffffff8116be31>] sys_sync+0x21/0x40 [ 2281.420146] [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b [ 2401.422564] INFO: task dpkg:24196 blocked for more than 120 seconds. [ 2401.422568] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2401.422570] dpkg D 0000000000000000 0 24196 24133 0x00000000 [ 2401.422574] ffff880168c87db8 0000000000000082 0000000000015bc0 0000000000015bc0 [ 2401.422578] ffff88021a7931a0 ffff880168c87fd8 0000000000015bc0 ffff88021a792de0 [ 2401.422581] 0000000000015bc0 ffff880168c87fd8 0000000000015bc0 ffff88021a7931a0 [ 2401.422584] Call Trace: [ 2401.422593] [<ffffffff81166d80>] ? bdi_sched_wait+0x0/0x20 [ 2401.422596] [<ffffffff81166d8e>] bdi_sched_wait+0xe/0x20 [ 2401.422601] [<ffffffff815591df>] __wait_on_bit+0x5f/0x90 [ 2401.422603] [<ffffffff81166d80>] ? bdi_sched_wait+0x0/0x20 [ 2401.422606] [<ffffffff81559288>] out_of_line_wait_on_bit+0x78/0x90 [ 2401.422610] [<ffffffff810850d0>] ? wake_bit_function+0x0/0x40 [ 2401.422613] [<ffffffff81166d44>] ? bdi_queue_work+0xa4/0xe0 [ 2401.422616] [<ffffffff811680ef>] bdi_sync_writeback+0x6f/0x80 [ 2401.422618] [<ffffffff81168120>] sync_inodes_sb+0x20/0x30 [ 2401.422621] [<ffffffff8116bc92>] __sync_filesystem+0x82/0x90 [ 2401.422624] [<ffffffff8116bd79>] sync_filesystems+0xd9/0x130 [ 2401.422626] [<ffffffff8116be31>] sys_sync+0x21/0x40 [ 2401.422631] [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b -- Writing big files to NFS target causes system lock up https://bugs.launchpad.net/bugs/561210 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
