Hi all, I am using LVM 2.02.74 and my kernel is vanilla kernel 2.6.33 from kernel.org. In lvm, there are 4 LVs created. I have one of LV to be snapshot, which is of equal size LV. When i try to merge the snapshot to the original LV, the lvm hangs up And i get dmegs [ 278.551794] Buffer I/O error on device dm-6, logical block 0 [ 278.551853] Buffer I/O error on device dm-6, logical block 0 [ 278.551906] Buffer I/O error on device dm-6, logical block 0 [ 278.551959] Buffer I/O error on device dm-6, logical block 0 [ 278.552012] Buffer I/O error on device dm-6, logical block 0 [ 278.552065] Buffer I/O error on device dm-6, logical block 0 [ 278.552118] Buffer I/O error on device dm-6, logical block 0 [ 278.552171] Buffer I/O error on device dm-6, logical block 0 [ 278.552224] Buffer I/O error on device dm-6, logical block 0 [ 278.552278] Buffer I/O error on device dm-6, logical block 7 and then [ 603.677690] INFO: task lvs:2657 blocked for more than 120 seconds. [ 603.677755] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 603.677837] lvs D 0000000000000000 0 2657 1862 0x00000000 [ 603.677840] ffff880331a47bb8 0000000000000082 ffff880331a47b88 00000000af93d88f [ 603.677843] 000000000135d000 ffff8801b124efc0 0000000000000000 0000000000000282 [ 603.677846] ffff880331a47fd8 000000000000fb08 ffff8801b90bae00 ffff880330c61700 [ 603.677849] Call Trace: [ 603.677851] [<ffffffff8141c1c0>] ? dm_unplug_all+0x50/0x70 [ 603.677854] [<ffffffff815466c7>] io_schedule+0x47/0x70 [ 603.677856] [<ffffffff8116cece>] __blockdev_direct_IO+0x71e/0xc00 [ 603.677859] [<ffffffff815489ec>] ? _unlock_kernel+0x4c/0xa0 [ 603.677862] [<ffffffff8116ab3e>] blkdev_direct_IO+0x4e/0x50 [ 603.677865] [<ffffffff81169cf0>] ? blkdev_get_blocks+0x0/0xc0 [ 603.677867] [<ffffffff810edede>] generic_file_aio_read+0x61e/0x670 [ 603.677870] [<ffffffff8116b610>] ? blkdev_get+0x10/0x20 [ 603.677872] [<ffffffff8116b691>] ? blkdev_open+0x71/0xc0 [ 603.677875] [<ffffffff8113bd72>] do_sync_read+0xd2/0x110 [ 603.677878] [<ffffffff8116a0bc>] ? block_ioctl+0x3c/0x40 [ 603.677880] [<ffffffff8114b9bd>] ? vfs_ioctl+0x3d/0xd0 [ 603.677883] [<ffffffff8114bf28>] ? do_vfs_ioctl+0x88/0x570 [ 603.677886] [<ffffffff81244d86>] ? security_file_permission+0x16/0x20 [ 603.677888] [<ffffffff8113c5b5>] vfs_read+0xb5/0x1a0 [ 603.677891] [<ffffffff8113c6f1>] sys_read+0x51/0x80 [ 603.677894] [<ffffffff8100a072>] system_call_fastpath+0x16/0x1b What could be problem? Regards, Jayaraman .T _______________________________________________ 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/
