As a follow up the lvremove hang produces this in /var/log/messages: Jan 30 10:21:58 vhost01 kernel: INFO: task lvremove:1460 blocked for more than 120 seconds. Jan 30 10:21:58 vhost01 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Jan 30 10:21:58 vhost01 kernel: lvremove D 0000000000000002 0 1460 307 0x00000080 Jan 30 10:21:58 vhost01 kernel: ffff8801a170db18 0000000000000082 0000000000000000 ffffffffa00041fc Jan 30 10:21:58 vhost01 kernel: ffff8801a170dae8 00000000d9f78a4a ffff8801a170db08 ffff8802750f7cc0 Jan 30 10:21:58 vhost01 kernel: ffff88042d589b38 ffff8801a170dfd8 000000000000f4e8 ffff88042d589b38 Jan 30 10:21:58 vhost01 kernel: Call Trace: Jan 30 10:21:58 vhost01 kernel: [<ffffffffa00041fc>] ? dm_table_unplug_all+0x5c/0x100 [dm_mod] Jan 30 10:21:58 vhost01 kernel: [<ffffffff814ed1c3>] io_schedule+0x73/0xc0 Jan 30 10:21:58 vhost01 kernel: [<ffffffff811b1a2e>] __blockdev_direct_IO_newtrunc+0x6fe/0xb90 Jan 30 10:21:58 vhost01 kernel: [<ffffffff812581fd>] ? get_disk+0x7d/0xf0 Jan 30 10:21:58 vhost01 kernel: [<ffffffff811b1f1e>] __blockdev_direct_IO+0x5e/0xd0 Jan 30 10:21:58 vhost01 kernel: [<ffffffff811ae820>] ? blkdev_get_blocks+0x0/0xc0 Jan 30 10:21:58 vhost01 kernel: [<ffffffff811af687>] blkdev_direct_IO+0x57/0x60 Jan 30 10:21:58 vhost01 kernel: [<ffffffff811ae820>] ? blkdev_get_blocks+0x0/0xc0 Jan 30 10:21:58 vhost01 kernel: [<ffffffff811128db>] generic_file_aio_read+0x6bb/0x700 Jan 30 10:21:58 vhost01 kernel: [<ffffffff81213a21>] ? avc_has_perm+0x71/0x90 Jan 30 10:21:58 vhost01 kernel: [<ffffffff8120d51f>] ? security_inode_permission+0x1f/0x30 Jan 30 10:21:58 vhost01 kernel: [<ffffffff8117641a>] do_sync_read+0xfa/0x140 Jan 30 10:21:58 vhost01 kernel: [<ffffffff81090bf0>] ? autoremove_wake_function+0x0/0x40 Jan 30 10:21:58 vhost01 kernel: [<ffffffff811aec5c>] ? block_ioctl+0x3c/0x40 Jan 30 10:21:58 vhost01 kernel: [<ffffffff81189342>] ? vfs_ioctl+0x22/0xa0 Jan 30 10:21:58 vhost01 kernel: [<ffffffff8121900b>] ? selinux_file_permission+0xfb/0x150 Jan 30 10:21:58 vhost01 kernel: [<ffffffff8120c3b6>] ? security_file_permission+0x16/0x20 Jan 30 10:21:58 vhost01 kernel: [<ffffffff81176e15>] vfs_read+0xb5/0x1a0 Jan 30 10:21:58 vhost01 kernel: [<ffffffff810d46e2>] ? audit_syscall_entry+0x272/0x2a0 Jan 30 10:21:58 vhost01 kernel: [<ffffffff81176f51>] sys_read+0x51/0x90 Jan 30 10:21:58 vhost01 kernel: [<ffffffff8100b0f2>] system_call_fastpath+0x16/0x1b Which repeats at two minute intevals. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
