On Fri, Aug 05, 2016 at 03:05:40PM +0800, yizhan wrote: > > > On 08/05/2016 02:39 PM, Guoqing Jiang wrote: > > > > > >On 08/04/2016 12:01 PM, Yi Zhang wrote: > > > >>[ 1201.734199] INFO: task systemd-udevd:794 blocked for more than 600 > >>seconds. > >>[ 1201.734204] Not tainted 4.7.0 #5 > >>[ 1201.734204] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" > >>disables this message. > >>[ 1201.734206] systemd-udevd D ffff8800310a77b0 0 794 1 > >>0x00000000 > >>[ 1201.734209] ffff8800310a77b0 0000000000000001 ffff880031de0000 > >>ffff8807cd3c5688 > >>[ 1201.734211] ffff8800310a8000 0000000000000000 0000000000000002 > >>ffff8807c3e4c100 > >>[ 1201.734213] 0000000000000000 ffff8800310a77c8 ffffffff816e4935 > >>ffff8807cd3c5400 > >>[ 1201.734214] Call Trace: > >>[ 1201.734220] [<ffffffff816e4935>] schedule+0x35/0x80 > >>[ 1201.734226] [<ffffffffa09a0ba9>] raid5_make_request+0x8b9/0xce0 > >>[raid456] > >>[ 1201.734229] [<ffffffff810d0240>] ? prepare_to_wait_event+0xf0/0xf0 > >>[ 1201.734233] [<ffffffff8156758e>] md_make_request+0xee/0x230 > >>[ 1201.734236] [<ffffffff81320803>] generic_make_request+0x103/0x1d0 > >>[ 1201.734237] [<ffffffff81320947>] submit_bio+0x77/0x150 > >>[ 1201.734240] [<ffffffff813183bb>] ? bio_alloc_bioset+0x1ab/0x2d0 > >>[ 1201.734242] [<ffffffff81254ecd>] ? alloc_page_buffers+0x5d/0xb0 > >>[ 1201.734244] [<ffffffff81256a1f>] submit_bh_wbc+0x12f/0x160 > >>[ 1201.734246] [<ffffffff81256d58>] block_read_full_page+0x208/0x380 > >>[ 1201.734248] [<ffffffff81259000>] ? I_BDEV+0x20/0x20 > >>[ 1201.734250] [<ffffffff812597e8>] blkdev_readpage+0x18/0x20 > >>[ 1201.734253] [<ffffffff81197718>] do_read_cache_page+0x138/0x300 > >>[ 1201.734255] [<ffffffff812597d0>] ? blkdev_writepages+0x40/0x40 > >>[ 1201.734257] [<ffffffff811978f9>] read_cache_page+0x19/0x20 > >>[ 1201.734259] [<ffffffff81333b50>] read_dev_sector+0x80/0xb0 > >>[ 1201.734261] [<ffffffff81337f14>] read_lba+0x104/0x1c0 > >>[ 1201.734263] [<ffffffff8133852a>] find_valid_gpt+0xfa/0x710 > >>[ 1201.734266] [<ffffffff811d7d00>] ? > >>vmap_page_range_noflush+0x190/0x380 > >>[ 1201.734267] [<ffffffff81338b40>] ? find_valid_gpt+0x710/0x710 > >>[ 1201.734269] [<ffffffff81338bc9>] efi_partition+0x89/0x440 > >>[ 1201.734271] [<ffffffff81359209>] ? snprintf+0x49/0x70 > >>[ 1201.734273] [<ffffffff81338b40>] ? find_valid_gpt+0x710/0x710 > >>[ 1201.734275] [<ffffffff81335b31>] check_partition+0x101/0x1f0 > >>[ 1201.734277] [<ffffffff81334462>] rescan_partitions+0xc2/0x2c0 > >>[ 1201.734279] [<ffffffff8132f294>] __blkdev_reread_part+0x64/0x70 > >>[ 1201.734281] [<ffffffff8132f2c3>] blkdev_reread_part+0x23/0x40 > >>[ 1201.734282] [<ffffffff8132fd3a>] blkdev_ioctl+0x46a/0x8f0 > >>[ 1201.734284] [<ffffffff81259aa1>] block_ioctl+0x41/0x50 > >>[ 1201.734286] [<ffffffff812323b6>] do_vfs_ioctl+0xa6/0x5c0 > >>[ 1201.734288] [<ffffffff81232949>] SyS_ioctl+0x79/0x90 > >>[ 1201.734290] [<ffffffff81274d67>] ? SyS_flock+0x117/0x1a0 > >>[ 1201.734292] [<ffffffff816e86b2>] entry_SYSCALL_64_fastpath+0x1a/0xa4 > >>[ 1201.734305] INFO: task md0_reshape:4089 blocked for more than 600 > >>seconds. > >>[ 1201.734306] Not tainted 4.7.0 #5 > >>[ 1201.734307] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" > >>disables this message. > >>[ 1201.734308] md0_reshape D ffff88080db77ac0 0 4089 2 > >>0x00000080 > >>[ 1201.734310] ffff88080db77ac0 0000000000000000 ffff8807d6724380 > >>ffff8807cd3c5670 > >>[ 1201.734311] ffff88080db78000 ffff88080db77b20 ffff8807cd3c5670 > >>0000000000000c20 > >>[ 1201.734313] ffff8807cd3c5418 ffff88080db77ad8 ffffffff816e4935 > >>ffff8807cd3c5400 > >>[ 1201.734314] Call Trace: > >>[ 1201.734316] [<ffffffff816e4935>] schedule+0x35/0x80 > >>[ 1201.734319] [<ffffffffa099fe8b>] raid5_get_active_stripe+0x20b/0x670 > >>[raid456] > >>[ 1201.734321] [<ffffffff810d0240>] ? prepare_to_wait_event+0xf0/0xf0 > >>[ 1201.734323] [<ffffffffa09a4733>] reshape_request+0x4d3/0x8a0 > >>[raid456] > >>[ 1201.734326] [<ffffffffa09a4e21>] raid5_sync_request+0x321/0x3a0 > >>[raid456] > >>[ 1201.734327] [<ffffffff810cfc54>] ? __wake_up+0x44/0x50 > >>[ 1201.734329] [<ffffffff8156ce97>] md_do_sync+0x9e7/0xf60 > >>[ 1201.734332] [<ffffffff810c200d>] ? update_curr+0xed/0x180 > >>[ 1201.734333] [<ffffffff810c025e>] ? account_entity_dequeue+0xae/0xd0 > >>[ 1201.734336] [<ffffffff81098d43>] ? kernel_sigaction+0x43/0xe0 > >>[ 1201.734339] [<ffffffff81566dc6>] md_thread+0x136/0x150 > >>[ 1201.734341] [<ffffffff81566c90>] ? find_pers+0x70/0x70 > >>[ 1201.734343] [<ffffffff810ab678>] kthread+0xd8/0xf0 > >>[ 1201.734344] [<ffffffff816e88bf>] ret_from_fork+0x1f/0x40 > >>[ 1201.734346] [<ffffffff810ab5a0>] ? kthread_park+0x60/0x60 > >> > >> > >>Reproduce steps: > >> > >>#mdadm -CR /dev/md0 -l5 -n4 /dev/sd[b-e]1 --write-journal /dev/sdf1 > >>#mdadm --wait /dev/md0 > >>#mdadm /dev/md0 -f /dev/sdf1 > >>#mdadm /dev/md0 -r /dev/sdf1 > >>#mdadm /dev/md0 -a /dev/sdf1 > >>#mdadm -D /dev/md0 > >>/dev/md0: > >> Version : 1.2 > >> Creation Time : Thu Aug 4 20:37:41 2016 > >> Raid Level : raid5 > >> Array Size : 31432704 (29.98 GiB 32.19 GB) > >> Used Dev Size : 10477568 (9.99 GiB 10.73 GB) > >> Raid Devices : 4 > >> Total Devices : 5 > >> Persistence : Superblock is persistent > >> > >> Update Time : Thu Aug 4 20:40:16 2016 > >> State : clean > >> Active Devices : 4 > >>Working Devices : 5 > >> Failed Devices : 0 > >> Spare Devices : 1 > >> > >> Layout : left-symmetric > >> Chunk Size : 512K > >> > >> Name : dhcp-12-125.nay.redhat.com:0 (local to host > >>dhcp-12-125.nay.redhat.com) > >> UUID : 09607542:a8dccc81:f5d2f80c:c586923f > >> Events : 22 > >> > >> Number Major Minor RaidDevice State > >> 0 8 17 0 active sync /dev/sdb1 > >> 1 8 33 1 active sync /dev/sdc1 > >> 2 8 49 2 active sync /dev/sdd1 > >> 5 8 65 3 active sync /dev/sde1 > >> > >> 4 8 81 - spare /dev/sdf1 > >> > >>#mdadm -G -n5 /dev/md0 > > > >Also with 4.7+, I can't find the same issue, but md0_reshape is in 'D' > >state from my side > >(actually I can't find reshape is in-progress by 'cat /proc/mdstat'). > > > Hi guoqing > Thanks for you detailed log. > The trace cannot be print soon, I think you need wait for more time, the > time from below is more than 15m. > Aug 4 20:39:37 dhcp-12-125 kernel: md/raid:md0: Disk failure on sdf1, > disabling device.#012md/raid:md0: Operation continuing on 4 devices. > Aug 4 20:39:56 dhcp-12-125 kernel: md: unbind<sdf1> > Aug 4 20:39:56 dhcp-12-125 kernel: md: export_rdev(sdf1) > Aug 4 20:40:16 dhcp-12-125 kernel: md: bind<sdf1> > Aug 4 20:40:47 dhcp-12-125 kernel: md: reshape of RAID array md0 > Aug 4 20:40:47 dhcp-12-125 kernel: md: minimum _guaranteed_ speed: 1000 > KB/sec/disk. > Aug 4 20:40:47 dhcp-12-125 kernel: md: using maximum available idle IO > bandwidth (but not more than 200000 KB/sec) for reshape. > Aug 4 20:40:47 dhcp-12-125 kernel: md: using 128k window, over a total of > 10477568k > Aug 4 20:55:56 dhcp-12-125 kernel: INFO: task systemd-udevd:794 blocked for > more than 600 seconds. Adding Song who knows a lot in this side. If an array is created with journal and journal disk fails, we will make the array read-only. So we should disable reshape too. Likely we have a bug here. Thanks, Shaohua -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
