On May 18, 2014, at 10:36 AM, Joshua McKinney <jos...@joshka.net> wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=76421 > > Perceived issue: SABNZBD hangs, requires restart. > Diagnosis shows the following in my system log at the time of hang. > This happens more than once. > Log: > > [ 5883.464766] INFO: task SABnzbd.py:994 blocked for more than 120 seconds. > [ 5883.464906] Not tainted 3.14.4-1-ARCH #1 > [ 5883.464989] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" > disables this message. > [ 5883.465130] SABnzbd.py D ffff880196d1f5c0 0 994 1 > 0x00000000 > [ 5883.465140] ffff8800765c9ce8 0000000000000082 0000005000000002 > ffff880196d1f5c0 > [ 5883.465148] 00000000000146c0 ffff8800765c9fd8 00000000000146c0 > ffff880196d1f5c0 > [ 5883.465156] 00000000ffffffef ffff880177d9a000 ffffffffa02d0dbc > ffff8800765c9c50 > [ 5883.465163] Call Trace: > [ 5883.465218] [<ffffffffa02d0dbc>] ? __set_extent_bit+0x45c/0x550 [btrfs] > [ 5883.465252] [<ffffffffa02d03c3>] ? free_extent_state+0x43/0xc0 [btrfs] > [ 5883.465284] [<ffffffffa02d0dbc>] ? __set_extent_bit+0x45c/0x550 [btrfs] > [ 5883.465295] [<ffffffff810b3ba4>] ? __wake_up+0x44/0x50 > [ 5883.465304] [<ffffffff8150b729>] schedule+0x29/0x70 > [ 5883.465335] [<ffffffffa02d1cd2>] lock_extent_bits+0x152/0x1e0 [btrfs] > [ 5883.465344] [<ffffffff810b4020>] ? __wake_up_sync+0x20/0x20 > [ 5883.465375] [<ffffffffa02bfa59>] btrfs_evict_inode+0x139/0x520 [btrfs] > [ 5883.465387] [<ffffffff811d5a80>] evict+0xb0/0x1c0 > [ 5883.465394] [<ffffffff811d6335>] iput+0xf5/0x1a0 > [ 5883.465402] [<ffffffff811ca9c5>] do_unlinkat+0x1b5/0x300 > [ 5883.465411] [<ffffffff8117899c>] ? vm_munmap+0x4c/0x60 > [ 5883.465418] [<ffffffff811cb986>] SyS_unlink+0x16/0x20 > [ 5883.465427] [<ffffffff81517769>] system_call_fastpath+0x16/0x1b > > Filesystem: > # btrfs filesystem show > Btrfs v3.14.1 > > running Data RAID, sys/meta RAID10 on 5x4TB. SABNzbd is a usenet > download program, so the file attempting to be deleted was possibly > large (>GB) > > Recently updated to 3.14 kernel provided in arch linux. I haven't seen > this issue before the last couple of days. > > Happy to provide more info if necessary. I'd include as an attachment to the bug the output from sysrq-w. echo 1 > /proc/sys/kernel/sysrq echo w > /proc/sysrq-trigger dmesg https://www.kernel.org/doc/Documentation/sysrq.txt Chris Murphy-- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
