Thank you very much for your quick response.(I did not expect a response from the person who created e2fsprogs :)) The correct word I should have used was "freezes". The system freezes permanently and all internet within the house is knocked off line, until it system is rebooted or CAT is removed(somebody told me that is a possible kernel panic). Kernel: 4.15.0-34-generic Distro: Ubuntu 18.04 LTS (Bionic Beaver) HW: 2 LSI Logic SAS 9207-8i Storage Controller LSI00301(Symbios Logic SAS2308 PCI-Express Fusion-MPT SAS-2 (rev 05)) Intel(R) Core(TM) i3-4360 CPU @ 3.70GHz SATA controller: Intel Corporation 9 Series Chipset Family SATA Controller [AHCI Mode] I upgraded e2fsprogs from 1.44.1 to 1.44.4 yesterday and started the check again. Here is what I have observed so far(check is still running) e2fsck 1.44.4 (18-Aug-2018) ext2fs_check_desc: Corrupt group descriptor: bad block for inode table e2fsck: Group descriptors look bad... trying backup blocks... /dev/mapper/enc6 was not cleanly unmounted, check forced. Pass 1: Checking inodes, blocks, and sizes Group 15's inode table at 6860 conflicts with some other fs block. Relocate? yes Root inode is not a directory. Clear? yes /dev/mapper/enc6: | / 0.2% after this is pages and pages of: Inode 610452616 block 704643072 conflicts with critical metadata, skipping block checks. Inode 610452616 block 350749440 conflicts with critical metadata, skipping block checks. Inode 610452616 block 26 conflicts with critical metadata, skipping block checks. Inode 610452616 block 361234729 conflicts with critical metadata, skipping block checks. Dmesg: [ +11.907528] EXT4-fs error (device dm-0): ext4_iget:4748: inode #2: comm mount: root inode unallocated [ +0.193901] EXT4-fs (dm-0): get root inode failed [ +0.000003] EXT4-fs (dm-0): mount failed [Sep13 01:43] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: ( null) [Sep13 17:01] perf: interrupt took too long (2524 > 2500), lowering kernel.perf_ event_max_sample_rate to 79000 [Sep13 19:46] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe froz en [ +0.000002] ata1: irq_stat 0x00400040, connection status changed [ +0.000002] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000003] ata1: hard resetting link [ +5.657999] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001820] ata1.00: configured for UDMA/133 [ +0.000006] ata1: EH complete [ +1.003669] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe froz en [ +0.000006] ata1: irq_stat 0x00400040, connection status changed [ +0.000004] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000005] ata1: hard resetting link [ +5.634542] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001809] ata1.00: configured for UDMA/133 [ +0.000003] ata1: EH complete [Sep13 19:47] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe froz en [ +0.000004] ata1: irq_stat 0x00400040, connection status changed [ +0.000003] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000003] ata1: hard resetting link [ +5.630704] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001781] ata1.00: configured for UDMA/133 [ +0.000002] ata1: EH complete [Sep13 20:19] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000003] ata1: irq_stat 0x00400040, connection status changed [ +0.000003] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000005] ata1: hard resetting link [ +5.629992] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.002201] ata1.00: configured for UDMA/133 [ +0.000007] ata1: EH complete [Sep13 20:49] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000005] ata1: irq_stat 0x00400040, connection status changed [ +0.000004] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000006] ata1: hard resetting link [ +5.692823] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001971] ata1.00: configured for UDMA/133 [ +0.000004] ata1: EH complete [Sep13 21:03] ata7: exception Emask 0x10 SAct 0x0 SErr 0x90002 action 0xe frozen [ +0.000004] ata7: irq_stat 0x00400000, PHY RDY changed [ +0.000002] ata7: SError: { RecovComm PHYRdyChg 10B8B } [ +0.000004] ata7: hard resetting link [ +6.483742] ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +5.216068] ata7.00: qc timeout (cmd 0xec) [ +0.000018] ata7.00: failed to IDENTIFY (I/O error, err_mask=0x4) [ +0.000003] ata7.00: revalidation failed (errno=-5) [ +0.000010] ata7: hard resetting link [ +0.475940] ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.097915] ata7.00: configured for UDMA/133 [ +0.000003] ata7: EH complete [Sep13 21:49] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000003] ata1: irq_stat 0x00400040, connection status changed [ +0.000004] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000004] ata1: hard resetting link [ +5.692985] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001830] ata1.00: configured for UDMA/133 [ +0.000003] ata1: EH complete [Sep13 22:19] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000003] ata1: irq_stat 0x00400040, connection status changed [ +0.000001] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000003] ata1: hard resetting link [ +5.689847] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001789] ata1.00: configured for UDMA/133 [ +0.000002] ata1: EH complete [Sep13 23:49] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000003] ata1: irq_stat 0x00400040, connection status changed [ +0.000004] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000003] ata1: hard resetting link [ +5.689514] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001774] ata1.00: configured for UDMA/133 [ +0.000002] ata1: EH complete [ +4.713309] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000002] ata1: irq_stat 0x00400040, connection status changed [ +0.000002] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000002] ata1: hard resetting link [ +5.632984] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001773] ata1.00: configured for UDMA/133 [ +0.000002] ata1: EH complete [Sep14 00:21] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000003] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000000] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000002] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000001] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000003] ? blk_queue_bio+0x26c/0x450 [ +0.000001] ? bit_wait+0x60/0x60 [ +0.000001] schedule+0x2c/0x80 [ +0.000002] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000003] ? bit_waitqueue+0x40/0x40 [ +0.000001] __wait_on_buffer+0x32/0x40 [ +0.000003] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000001] ext4_iget+0x8e/0xbd0 [ +0.000002] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000001] ext4_iget_normal+0x30/0x40 [ +0.000002] ext4_lookup+0xf0/0x210 [ +0.000001] path_openat+0xd30/0x1770 [ +0.000003] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000001] do_filp_open+0x9b/0x110 [ +0.000003] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000002] do_open_execat+0x7e/0x1e0 [ +0.000002] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000002] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000001] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000003] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000001] RIP: 0033:0x7f5188395e37 [ +0.000001] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000001] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000000] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000001] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000001] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000000] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:23] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000003] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000000] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000002] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000001] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000003] ? blk_queue_bio+0x26c/0x450 [ +0.000001] ? bit_wait+0x60/0x60 [ +0.000001] schedule+0x2c/0x80 [ +0.000002] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000002] ? bit_waitqueue+0x40/0x40 [ +0.000002] __wait_on_buffer+0x32/0x40 [ +0.000002] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000002] ext4_iget+0x8e/0xbd0 [ +0.000002] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000001] ext4_iget_normal+0x30/0x40 [ +0.000002] ext4_lookup+0xf0/0x210 [ +0.000001] path_openat+0xd30/0x1770 [ +0.000002] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000002] do_filp_open+0x9b/0x110 [ +0.000002] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000003] do_open_execat+0x7e/0x1e0 [ +0.000001] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000002] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000002] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000002] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000001] RIP: 0033:0x7f5188395e37 [ +0.000001] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000001] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000001] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000000] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000001] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000000] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:25] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000003] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000001] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000002] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000002] ? blk_queue_bio+0x26c/0x450 [ +0.000001] ? bit_wait+0x60/0x60 [ +0.000001] schedule+0x2c/0x80 [ +0.000003] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000002] ? bit_waitqueue+0x40/0x40 [ +0.000002] __wait_on_buffer+0x32/0x40 [ +0.000002] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000001] ext4_iget+0x8e/0xbd0 [ +0.000002] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000002] ext4_iget_normal+0x30/0x40 [ +0.000001] ext4_lookup+0xf0/0x210 [ +0.000001] path_openat+0xd30/0x1770 [ +0.000003] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000001] do_filp_open+0x9b/0x110 [ +0.000003] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000002] do_open_execat+0x7e/0x1e0 [ +0.000002] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000001] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000002] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000002] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000001] RIP: 0033:0x7f5188395e37 [ +0.000001] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000001] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000001] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000000] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000001] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000001] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:27] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000002] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000001] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000002] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000002] ? blk_queue_bio+0x26c/0x450 [ +0.000002] ? bit_wait+0x60/0x60 [ +0.000000] schedule+0x2c/0x80 [ +0.000003] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000002] ? bit_waitqueue+0x40/0x40 [ +0.000002] __wait_on_buffer+0x32/0x40 [ +0.000002] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000001] ext4_iget+0x8e/0xbd0 [ +0.000002] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000002] ext4_iget_normal+0x30/0x40 [ +0.000001] ext4_lookup+0xf0/0x210 [ +0.000002] path_openat+0xd30/0x1770 [ +0.000002] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000002] do_filp_open+0x9b/0x110 [ +0.000002] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000003] do_open_execat+0x7e/0x1e0 [ +0.000001] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000002] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000002] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000002] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000001] RIP: 0033:0x7f5188395e37 [ +0.000001] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000001] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000001] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000000] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000001] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000000] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:29] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000003] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000001] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000001] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000003] ? blk_queue_bio+0x26c/0x450 [ +0.000001] ? bit_wait+0x60/0x60 [ +0.000001] schedule+0x2c/0x80 [ +0.000002] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000003] ? bit_waitqueue+0x40/0x40 [ +0.000001] __wait_on_buffer+0x32/0x40 [ +0.000003] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000001] ext4_iget+0x8e/0xbd0 [ +0.000002] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000002] ext4_iget_normal+0x30/0x40 [ +0.000001] ext4_lookup+0xf0/0x210 [ +0.000001] path_openat+0xd30/0x1770 [ +0.000003] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000001] do_filp_open+0x9b/0x110 [ +0.000003] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000002] do_open_execat+0x7e/0x1e0 [ +0.000002] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000002] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000001] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000003] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000001] RIP: 0033:0x7f5188395e37 [ +0.000001] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000001] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000000] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000001] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000001] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000000] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:31] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000002] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000001] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000002] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000002] ? blk_queue_bio+0x26c/0x450 [ +0.000002] ? bit_wait+0x60/0x60 [ +0.000001] schedule+0x2c/0x80 [ +0.000002] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000002] ? bit_waitqueue+0x40/0x40 [ +0.000002] __wait_on_buffer+0x32/0x40 [ +0.000002] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000001] ext4_iget+0x8e/0xbd0 [ +0.000003] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000001] ext4_iget_normal+0x30/0x40 [ +0.000001] ext4_lookup+0xf0/0x210 [ +0.000002] path_openat+0xd30/0x1770 [ +0.000002] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000002] do_filp_open+0x9b/0x110 [ +0.000002] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000003] do_open_execat+0x7e/0x1e0 [ +0.000001] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000002] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000002] SyS_execve+0x31/0x40 [ +0.000002] do_syscall_64+0x73/0x130 [ +0.000003] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000001] RIP: 0033:0x7f5188395e37 [ +0.000001] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000001] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000000] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000001] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000001] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000000] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:33] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000003] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000002] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000001] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000002] ? blk_queue_bio+0x26c/0x450 [ +0.000002] ? bit_wait+0x60/0x60 [ +0.000001] schedule+0x2c/0x80 [ +0.000002] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000003] ? bit_waitqueue+0x40/0x40 [ +0.000001] __wait_on_buffer+0x32/0x40 [ +0.000002] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000002] ext4_iget+0x8e/0xbd0 [ +0.000002] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000001] ext4_iget_normal+0x30/0x40 [ +0.000002] ext4_lookup+0xf0/0x210 [ +0.000001] path_openat+0xd30/0x1770 [ +0.000003] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000001] do_filp_open+0x9b/0x110 [ +0.000003] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000002] do_open_execat+0x7e/0x1e0 [ +0.000001] ? prepare_creds+0xd5/0x110 [ +0.000002] ? do_open_execat+0x7e/0x1e0 [ +0.000001] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000002] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000002] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000001] RIP: 0033:0x7f5188395e37 [ +0.000001] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000001] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000001] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000000] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000001] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000001] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:35] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000002] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000001] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000002] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000002] ? blk_queue_bio+0x26c/0x450 [ +0.000002] ? bit_wait+0x60/0x60 [ +0.000000] schedule+0x2c/0x80 [ +0.000003] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000002] ? bit_waitqueue+0x40/0x40 [ +0.000002] __wait_on_buffer+0x32/0x40 [ +0.000002] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000001] ext4_iget+0x8e/0xbd0 [ +0.000002] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000002] ext4_iget_normal+0x30/0x40 [ +0.000001] ext4_lookup+0xf0/0x210 [ +0.000002] path_openat+0xd30/0x1770 [ +0.000002] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000002] do_filp_open+0x9b/0x110 [ +0.000002] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000002] do_open_execat+0x7e/0x1e0 [ +0.000002] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000002] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000001] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000002] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000002] RIP: 0033:0x7f5188395e37 [ +0.000000] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000002] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000000] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000001] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000000] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000001] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:37] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000003] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000001] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000002] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000002] ? blk_queue_bio+0x26c/0x450 [ +0.000002] ? bit_wait+0x60/0x60 [ +0.000001] schedule+0x2c/0x80 [ +0.000002] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000002] ? bit_waitqueue+0x40/0x40 [ +0.000002] __wait_on_buffer+0x32/0x40 [ +0.000002] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000001] ext4_iget+0x8e/0xbd0 [ +0.000003] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000001] ext4_iget_normal+0x30/0x40 [ +0.000001] ext4_lookup+0xf0/0x210 [ +0.000002] path_openat+0xd30/0x1770 [ +0.000002] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000002] do_filp_open+0x9b/0x110 [ +0.000002] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000002] do_open_execat+0x7e/0x1e0 [ +0.000002] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000002] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000001] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000002] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000002] RIP: 0033:0x7f5188395e37 [ +0.000000] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000002] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000000] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000001] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000000] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000001] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 00:39] INFO: task start-stop-daem:25273 blocked for more than 120 seconds. [ +0.000003] Not tainted 4.15.0-34-generic #37-Ubuntu [ +0.000001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ +0.000001] start-stop-daem D 0 25273 25270 0x00000000 [ +0.000001] Call Trace: [ +0.000005] __schedule+0x291/0x8a0 [ +0.000003] ? blk_queue_bio+0x26c/0x450 [ +0.000001] ? bit_wait+0x60/0x60 [ +0.000001] schedule+0x2c/0x80 [ +0.000002] io_schedule+0x16/0x40 [ +0.000001] bit_wait_io+0x11/0x60 [ +0.000001] __wait_on_bit+0x4c/0x90 [ +0.000001] ? submit_bio+0x73/0x140 [ +0.000001] out_of_line_wait_on_bit+0x90/0xb0 [ +0.000003] ? bit_waitqueue+0x40/0x40 [ +0.000002] __wait_on_buffer+0x32/0x40 [ +0.000002] __ext4_get_inode_loc+0x1b5/0x410 [ +0.000001] ext4_iget+0x8e/0xbd0 [ +0.000002] ? legitimize_path.isra.28+0x2e/0x60 [ +0.000002] ext4_iget_normal+0x30/0x40 [ +0.000001] ext4_lookup+0xf0/0x210 [ +0.000001] path_openat+0xd30/0x1770 [ +0.000003] ? flush_tlb_func_common.constprop.11+0x149/0x220 [ +0.000001] do_filp_open+0x9b/0x110 [ +0.000003] ? ___slab_alloc+0xf2/0x4b0 [ +0.000001] ? __slab_free+0x14d/0x2c0 [ +0.000002] ? tlb_finish_mmu+0x23/0x30 [ +0.000001] ? _cond_resched+0x19/0x40 [ +0.000001] ? __kmalloc+0x1e7/0x220 [ +0.000002] ? security_prepare_creds+0x9c/0xc0 [ +0.000002] do_open_execat+0x7e/0x1e0 [ +0.000002] ? prepare_creds+0xd5/0x110 [ +0.000001] ? do_open_execat+0x7e/0x1e0 [ +0.000002] do_execveat_common.isra.34+0x1c7/0x810 [ +0.000001] SyS_execve+0x31/0x40 [ +0.000003] do_syscall_64+0x73/0x130 [ +0.000002] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ +0.000002] RIP: 0033:0x7f5188395e37 [ +0.000000] RSP: 002b:00007ffc867c3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ +0.000002] RAX: ffffffffffffffda RBX: 00007ffc867c3d38 RCX: 00007f5188395e37 [ +0.000000] RDX: 00007ffc867c3d50 RSI: 00007ffc867c3d30 RDI: 00007ffc867c4ed1 [ +0.000001] RBP: 00007ffc867c4ed1 R08: 00007f5187627330 R09: 00007ffc867c3418 [ +0.000000] R10: 00007f5187627330 R11: 0000000000000246 R12: 0000000000000000 [ +0.000001] R13: 0000556a94fd22a0 R14: 00000000ffffffff R15: 00007ffc867c4eff [Sep14 01:19] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000003] ata1: irq_stat 0x00400040, connection status changed [ +0.000002] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000002] ata1: hard resetting link [ +5.631459] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001774] ata1.00: configured for UDMA/133 [ +0.000003] ata1: EH complete [Sep14 03:49] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000003] ata1: irq_stat 0x00400040, connection status changed [ +0.000002] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000002] ata1: hard resetting link [ +0.431291] ata7: exception Emask 0x10 SAct 0x0 SErr 0x90002 action 0xe frozen [ +0.000002] ata7: irq_stat 0x00400000, PHY RDY changed [ +0.000001] ata7: SError: { RecovComm PHYRdyChg 10B8B } [ +0.000002] ata7: hard resetting link [ +5.606028] ata1: link is slow to respond, please be patient (ready=0) [ +0.480000] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001779] ata1.00: configured for UDMA/133 [ +0.000002] ata1: EH complete [ +0.282233] ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.444108] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000002] ata1: irq_stat 0x00400040, connection status changed [ +0.000002] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000002] ata1: hard resetting link [ +4.639880] ata7.00: qc timeout (cmd 0xec) [ +0.000012] ata7.00: failed to IDENTIFY (I/O error, err_mask=0x4) [ +0.000001] ata7.00: revalidation failed (errno=-5) [ +0.000003] ata7: hard resetting link [ +0.476000] ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.097927] ata7.00: configured for UDMA/133 [ +0.000002] ata7: EH complete [ +0.418059] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001792] ata1.00: configured for UDMA/133 [ +0.000002] ata1: EH complete [Sep14 04:19] ata1: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen [ +0.000002] ata1: irq_stat 0x00400040, connection status changed [ +0.000002] ata1: SError: { HostInt PHYRdyChg 10B8B DevExch } [ +0.000003] ata1: hard resetting link [ +0.000236] ata7: exception Emask 0x10 SAct 0x0 SErr 0x90002 action 0xe frozen [ +0.000002] ata7: irq_stat 0x00400000, PHY RDY changed [ +0.000002] ata7: SError: { RecovComm PHYRdyChg 10B8B } [ +0.000002] ata7: hard resetting link [ +5.691920] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.001783] ata1.00: configured for UDMA/133 [ +0.000002] ata1: EH complete [ +0.658234] ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +5.096036] ata7.00: qc timeout (cmd 0xec) [ +0.000012] ata7.00: failed to IDENTIFY (I/O error, err_mask=0x4) [ +0.000001] ata7.00: revalidation failed (errno=-5) [ +0.000003] ata7: hard resetting link [ +0.476004] ata7: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [ +0.097898] ata7.00: configured for UDMA/133 [ +0.000002] ata7: EH complete [ +4.332656] systemd[1]: systemd-journald.service: Main process exited, code=dumped, status=6/AB [ +0.000056] systemd[1]: systemd-journald.service: Failed with result 'watchdog'. [ +0.133014] systemd[1]: systemd-journald.service: Service has no hold-off time, scheduling rest [ +0.000044] systemd[1]: systemd-journald.service: Scheduled restart job, restart counter is at [ +0.043206] systemd[1]: Stopped Flush Journal to Persistent Storage. [ +0.000018] systemd[1]: Stopping Flush Journal to Persistent Storage... [ +0.000005] systemd[1]: Stopped Journal Service. [ +0.038398] systemd[1]: Starting Journal Service... [ +1.293208] systemd-journald[25839]: File /var/log/journal/bf8d6c0b215e483e86b0bb9b4a217fdb/sysleanly shut down, renaming and replacing. [ +1.234730] systemd[1]: Started Journal Service. These are just some of the errors that are repeated. The error with ata7 is strange because I found and removed this drive the other day(as well as changed sata cables). ata1 error is new and have never observed this before(this location has also had its sata cable swapped). However, when I looked for the location of these drives they are plugged directly into the motherboard. I assume these errors are not a good sign. Regards, Nathan