On Sun, Sep 01 2019, Dmitrij Gusev wrote: > Hello. > > I get a kernel error every time I create LVM snapshot - at the creation > and at boot time, though the snapshot itself is working properly. Wrong email list. Easy mistake to make though. Please use dm-devel@xxxxxxxxxx NeilBrown > > Sorry if I'm writing to the incorrect mailing list, please direct me to > the correct one. (I wasn't able to find LVM related). > > Linux nexus 4.19.69 #2 SMP Thu Aug 29 16:33:35 CDT 2019 x86_64 Intel(R) > Xeon(R) E-2174G CPU @ 3.80GHz GenuineIntel GNU/Linux > > At boot log: > > [ 17.160402] ------------[ cut here ]------------ > [ 17.160900] generic_make_request: Trying to write to read-only > block-device dm-4 (partno 0) > [ 17.161424] WARNING: CPU: 3 PID: 941 at block/blk-core.c:2176 > generic_make_request_checks+0x28d/0x6a0 > [ 17.161935] Modules linked in: fuse hid_generic usbhid hid i2c_dev > mei_wdt eeepc_wmi asus_wmi evdev sparse_keymap rfkill wmi_bmof > snd_hda_codec_hdmi coretemp snd_hda_codec_realtek intel_rapl > snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp kvm_intel > crct10dif_pclmul crc32_pclmul i915 crc32c_intel ghash_clmulni_intel > intel_cstate snd_hda_intel snd_hda_codec kvmgt vfio_mdev intel_rapl_perf > mdev vfio_iommu_type1 vfio kvm snd_hda_core snd_hwdep igb snd_pcm > snd_timer snd e1000e soundcore irqbypass cec rc_core hwmon dca i2c_i801 > drm_kms_helper drm intel_gtt agpgart thermal fan i2c_algo_bit > fb_sys_fops syscopyarea sysfillrect sysimgblt i2c_core video mei_me mei > xhci_pci xhci_hcd button pcc_cpufreq wmi acpi_pad acpi_tad loop > dm_snapshot dm_bufio ext4 mbcache jbd2 > [ 17.165955] CPU: 3 PID: 941 Comm: kworker/3:3 Not tainted 4.19.69 #2 > [ 17.166464] Hardware name: ASUSTeK COMPUTER INC. System Product > Name/WS C246 PRO, BIOS 1003 06/04/2019 > [ 17.166952] Workqueue: kcopyd do_work > [ 17.167467] RIP: 0010:generic_make_request_checks+0x28d/0x6a0 > [ 17.167952] Code: 5c 03 00 00 48 89 ef 48 8d 74 24 08 c6 05 11 47 f3 > 00 01 e8 55 60 01 00 48 c7 c7 d0 5d 08 bd 48 89 c6 44 89 e2 e8 22 cd cc > ff <0f> 0b 4c 8b 65 08 8b 45 30 c1 e8 09 49 8b 74 24 50 85 c0 0f 84 5f > [ 17.169020] RSP: 0018:ffff9df3c400faf8 EFLAGS: 00010282 > [ 17.169533] RAX: 0000000000000000 RBX: ffff927c05350988 RCX: > 0000000000000311 > [ 17.170049] RDX: 0000000000000001 RSI: 0000000000000082 RDI: > 0000000000000246 > [ 17.170562] RBP: ffff927c06a64900 R08: 0000000000000000 R09: > 0000000000000311 > [ 17.171106] R10: 0000000000aaaaaa R11: 0000000000000000 R12: > 0000000000000000 > [ 17.171616] R13: 0000000000000000 R14: 0000000000001000 R15: > ffff927c05472b80 > [ 17.172130] FS: 0000000000000000(0000) GS:ffff927c0bb80000(0000) > knlGS:0000000000000000 > [ 17.172646] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 17.173191] CR2: 00007f40a05f9ff0 CR3: 000000015a20a004 CR4: > 00000000003606e0 > [ 17.173711] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 17.174238] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000400 > [ 17.174752] Call Trace: > [ 17.175279] ? kmem_cache_alloc+0x37/0x1c0 > [ 17.175771] generic_make_request+0x5b/0x400 > [ 17.176247] submit_bio+0x43/0x130 > [ 17.176726] ? bio_add_page+0x48/0x60 > [ 17.177195] dispatch_io+0x1c8/0x460 > [ 17.177689] ? dm_hash_remove_all.cold+0x21/0x21 > [ 17.178168] ? list_get_page+0x30/0x30 > [ 17.178624] ? dm_kcopyd_do_callback+0x40/0x40 > [ 17.179102] dm_io+0x11c/0x210 > [ 17.179545] ? dm_hash_remove_all.cold+0x21/0x21 > [ 17.179990] ? list_get_page+0x30/0x30 > [ 17.180429] run_io_job+0xd4/0x1c0 > [ 17.180863] ? dm_kcopyd_do_callback+0x40/0x40 > [ 17.181293] ? dm_kcopyd_client_destroy+0x140/0x140 > [ 17.181719] process_jobs+0x82/0x1b0 > [ 17.182147] do_work+0xb9/0xf0 > [ 17.182570] process_one_work+0x1ba/0x3d0 > [ 17.182992] worker_thread+0x4d/0x3d0 > [ 17.183441] ? process_one_work+0x3d0/0x3d0 > [ 17.183857] kthread+0x117/0x130 > [ 17.184270] ? kthread_create_worker_on_cpu+0x70/0x70 > [ 17.184680] ret_from_fork+0x35/0x40 > [ 17.185082] ---[ end trace f01c6b7a501faa64 ]--- > > Best regards, > > Dmitrij Gusev
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