On Wed, 3 Jan 2018 14:03:51 +0300 Andrei Borzenkov <arvidjaar@gmail.com> wrote:
03.01.2018 13:48, Paul Neuwirth пишет:
On Wed, 13 Dec 2017 13:53:33 +0100 (CET) "Carlos E. R." <robin.listas@telefonica.net> wrote:
I see udev trying, then kernel failing. :-?
Did you try login in a different desktop? Perhaps close the graphical session, and try in text mode?
Enter a line in fstab for the floppy, no-auto?
unfortunately that did not work.
is there a possibility to create an udev rule, making udev not to try accessing?
I looked through this thread and I miss any prove that it is udev that continuously tries to access disk. There is log of single access attempt that could be interpreted as if access was caused by udev which is more or less normal - udev attempts to query SCSI device initially.
Please upload full log after boot (journalctl -b) that shows *multiple* attempts to access drive, so that at least timing between them is known. I have my theory but I'd rather wait for facts.
Thank you for the help. I found out, that from time of creation of devices or loading the kernel module of the scsi controller, the drive gets accessed until a floppy gets inserted. to speed up boot process, on current boot I inserted a (blank) floppy. after boot process continued I removed the floppy. I had other issues (network) at this boot. On next "clean" boot I could provide a full log. The most relevant part of journalctl -b: Dez 29 18:27:28 linux-7qz0 kernel: scsi host0: Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0 <Adaptec 2940A Ultra SCSI adapter> aic7860: Ultra Single Channel A, SCSI Id=7, 3/253 SCBs Dez 29 18:27:28 linux-7qz0 kernel: scsi 0:0:0:0: Processor HP C7670A 3945 PQ: 0 ANSI: 2 Dez 29 18:27:28 linux-7qz0 kernel: scsi target0:0:0: Beginning Domain Validation Dez 29 18:27:28 linux-7qz0 kernel: scsi target0:0:0: Ending Domain Validation Dez 29 18:27:28 linux-7qz0 kernel: scsi 0:0:0:0: Attached scsi generic sg3 type 3 Dez 29 18:27:28 linux-7qz0 kernel: scsi 0:0:3:0: Direct-Access TEAC FC-5 HGF 00 RV D PQ: 0 ANSI: 1 CCS Dez 29 18:27:28 linux-7qz0 kernel: scsi target0:0:3: Beginning Domain Validation Dez 29 18:27:28 linux-7qz0 kernel: scsi target0:0:3: Ending Domain Validation Dez 29 18:27:28 linux-7qz0 kernel: sd 0:0:3:0: Attached scsi generic sg4 type 0 Dez 29 18:27:28 linux-7qz0 kernel: sd 0:0:3:0: Power-on or device reset occurred Dez 29 18:27:28 linux-7qz0 kernel: sd 0:0:3:0: [sdc] Spinning up disk... Dez 29 18:27:29 linux-7qz0 kernel: scsi 0:0:5:0: Sequential-Access Seagate STT20000N 7.30 PQ: 0 ANSI: 2 Dez 29 18:27:29 linux-7qz0 kernel: scsi target0:0:5: Beginning Domain Validation Dez 29 18:27:29 linux-7qz0 kernel: scsi target0:0:5: FAST-10 SCSI 10.0 MB/s ST (100 ns, offset 15) Dez 29 18:27:29 linux-7qz0 kernel: scsi target0:0:5: Domain Validation skipping write tests Dez 29 18:27:29 linux-7qz0 kernel: scsi target0:0:5: Ending Domain Validation Dez 29 18:27:29 linux-7qz0 kernel: scsi 0:0:5:0: Attached scsi generic sg5 type 1 Dez 29 18:27:29 linux-7qz0 kernel: ACPI: PCI Interrupt Link [APC4] enabled at IRQ 19 Dez 29 18:27:29 linux-7qz0 kernel: firewire_ohci 0000:01:08.0: added OHCI v1.10 device as card 0, 4 IR + 8 IT contexts, quirks 0x11 Dez 29 18:27:30 linux-7qz0 kernel: . Dez 29 18:27:30 linux-7qz0 kernel: firewire_core 0000:01:08.0: created device fw0: GUID 00016c20008dc5ce, S400 Dez 29 18:27:41 linux-7qz0 kernel: ........... Dez 29 18:27:41 linux-7qz0 kernel: usb 1-4: new high-speed USB device number 4 using ehci-pci Dez 29 18:27:41 linux-7qz0 kernel: usb 1-4: New USB device found, idVendor=1f75, idProduct=0611 Dez 29 18:27:41 linux-7qz0 kernel: usb 1-4: New USB device strings: Mfr=4, Product=5, SerialNumber=6 Dez 29 18:27:41 linux-7qz0 kernel: usb 1-4: SerialNumber: 20160327 Dez 29 18:27:46 linux-7qz0 systemd-udevd[209]: giving up waiting for workers to finish Dez 29 18:27:46 linux-7qz0 systemd-udevd[209]: event loop failed: Connection timed out Dez 29 18:27:46 linux-7qz0 systemd[1]: systemd-udevd.service: Main process exited, code=exited, status=1/FAILURE Dez 29 18:28:44 linux-7qz0 kernel: ............................................................ready "ready" means disk inserted.. then it kept quiet until I reloaded kernel module aic7xxx: Jan 03 11:25:27 kappa kernel: scsi host0: Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0 <Adaptec 2940A Ultra SCSI adapter> aic7860: Ultra Single Channel A, SCSI Id=7, 3/253 SCBs Jan 03 11:25:27 kappa kernel: scsi 0:0:0:0: Processor HP C7670A 3945 PQ: 0 ANSI: 2 Jan 03 11:25:27 kappa kernel: scsi target0:0:0: Beginning Domain Validation Jan 03 11:25:27 kappa kernel: scsi target0:0:0: Ending Domain Validation Jan 03 11:25:27 kappa kernel: scsi 0:0:0:0: Attached scsi generic sg3 type 3 Jan 03 11:25:27 kappa kernel: scsi 0:0:3:0: Direct-Access TEAC FC-5 HGF 00 RV D PQ: 0 ANSI: 1 CCS Jan 03 11:25:27 kappa kernel: scsi target0:0:3: Beginning Domain Validation Jan 03 11:25:27 kappa kernel: scsi target0:0:3: Ending Domain Validation Jan 03 11:25:27 kappa kernel: sd 0:0:3:0: Attached scsi generic sg4 type 0 Jan 03 11:25:27 kappa kernel: sd 0:0:3:0: Power-on or device reset occurred Jan 03 11:25:27 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:25:27 kappa kernel: scsi 0:0:4:0: Scanner Nikon LS-2000 1.31 PQ: 0 ANSI: 2 Jan 03 11:25:27 kappa kernel: scsi target0:0:4: Beginning Domain Validation Jan 03 11:25:27 kappa kernel: scsi target0:0:4: Ending Domain Validation Jan 03 11:25:27 kappa kernel: scsi 0:0:4:0: Attached scsi generic sg5 type 6 Jan 03 11:25:27 kappa kernel: scsi 0:0:5:0: Sequential-Access Seagate STT20000N 7.30 PQ: 0 ANSI: 2 Jan 03 11:25:27 kappa kernel: scsi target0:0:5: Beginning Domain Validation Jan 03 11:25:27 kappa kernel: scsi target0:0:5: FAST-10 SCSI 10.0 MB/s ST (100 ns, offset 15) Jan 03 11:25:27 kappa kernel: scsi target0:0:5: Domain Validation skipping write tests Jan 03 11:25:27 kappa kernel: scsi target0:0:5: Ending Domain Validation Jan 03 11:25:27 kappa kernel: st 0:0:5:0: Attached scsi tape st0 Jan 03 11:25:27 kappa kernel: st 0:0:5:0: st0: try direct i/o: yes (alignment 4 B) Jan 03 11:25:27 kappa kernel: st 0:0:5:0: Attached scsi generic sg7 type 1 Jan 03 11:27:08 kappa kernel: ...............................................................................................not responding... Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Write Protect is on Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Mode Sense: 37 88 80 08 Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Asking for cache data failed Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Assuming drive cache: write through Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:27:08 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:27:09 kappa kernel: . Jan 03 11:27:09 kappa kernel: . Jan 03 11:27:10 kappa kernel: . Jan 03 11:27:10 kappa kernel: . Jan 03 11:27:11 kappa kernel: . Jan 03 11:27:11 kappa kernel: . Jan 03 11:27:12 kappa kernel: . Jan 03 11:27:12 kappa kernel: . Jan 03 11:27:13 kappa kernel: . Jan 03 11:27:13 kappa kernel: . Jan 03 11:27:14 kappa kernel: . Jan 03 11:27:14 kappa kernel: . Jan 03 11:27:15 kappa kernel: . Jan 03 11:27:15 kappa kernel: . Jan 03 11:27:16 kappa kernel: . Jan 03 11:27:16 kappa kernel: . Jan 03 11:27:17 kappa kernel: . Jan 03 11:27:17 kappa kernel: . Jan 03 11:27:19 kappa kernel: . Jan 03 11:27:19 kappa kernel: . Jan 03 11:27:20 kappa kernel: . Jan 03 11:27:20 kappa kernel: . Jan 03 11:27:21 kappa kernel: . Jan 03 11:27:21 kappa kernel: . Jan 03 11:27:22 kappa kernel: . Jan 03 11:27:22 kappa kernel: . Jan 03 11:27:23 kappa kernel: . Jan 03 11:27:23 kappa kernel: . Jan 03 11:27:24 kappa kernel: . Jan 03 11:27:24 kappa kernel: . Jan 03 11:27:25 kappa kernel: . Jan 03 11:27:25 kappa kernel: . Jan 03 11:27:26 kappa kernel: . Jan 03 11:27:26 kappa kernel: . Jan 03 11:27:27 kappa kernel: . Jan 03 11:27:27 kappa kernel: . Jan 03 11:27:28 kappa kernel: . Jan 03 11:27:28 kappa kernel: . Jan 03 11:27:29 kappa kernel: . Jan 03 11:27:29 kappa kernel: . Jan 03 11:27:30 kappa kernel: . Jan 03 11:27:30 kappa kernel: . Jan 03 11:27:31 kappa kernel: . Jan 03 11:27:31 kappa kernel: . Jan 03 11:27:32 kappa kernel: . Jan 03 11:27:32 kappa kernel: . Jan 03 11:27:33 kappa kernel: . Jan 03 11:27:33 kappa kernel: . Jan 03 11:27:34 kappa kernel: . Jan 03 11:27:34 kappa kernel: . Jan 03 11:27:35 kappa kernel: . Jan 03 11:27:35 kappa kernel: . Jan 03 11:27:36 kappa kernel: . Jan 03 11:27:36 kappa kernel: . Jan 03 11:27:38 kappa kernel: . Jan 03 11:27:38 kappa kernel: . Jan 03 11:27:39 kappa kernel: . Jan 03 11:27:39 kappa kernel: . Jan 03 11:27:40 kappa kernel: . Jan 03 11:27:40 kappa kernel: . Jan 03 11:27:41 kappa kernel: . Jan 03 11:27:41 kappa kernel: . Jan 03 11:27:42 kappa kernel: . Jan 03 11:27:42 kappa kernel: . Jan 03 11:27:43 kappa kernel: . Jan 03 11:27:43 kappa kernel: . Jan 03 11:27:44 kappa kernel: . Jan 03 11:27:44 kappa kernel: . Jan 03 11:27:45 kappa kernel: . Jan 03 11:27:45 kappa kernel: . Jan 03 11:27:46 kappa kernel: . Jan 03 11:27:46 kappa kernel: . Jan 03 11:27:47 kappa kernel: . Jan 03 11:27:47 kappa kernel: . Jan 03 11:27:48 kappa kernel: . Jan 03 11:27:48 kappa kernel: . Jan 03 11:27:49 kappa kernel: . Jan 03 11:27:49 kappa kernel: . Jan 03 11:27:50 kappa kernel: . Jan 03 11:27:50 kappa kernel: . Jan 03 11:27:51 kappa kernel: . Jan 03 11:27:51 kappa kernel: . Jan 03 11:27:52 kappa kernel: . Jan 03 11:27:52 kappa kernel: . Jan 03 11:27:53 kappa kernel: . Jan 03 11:27:53 kappa kernel: . Jan 03 11:27:54 kappa kernel: . Jan 03 11:27:54 kappa kernel: . Jan 03 11:27:56 kappa kernel: . Jan 03 11:27:56 kappa kernel: . Jan 03 11:27:57 kappa kernel: . Jan 03 11:27:57 kappa kernel: . Jan 03 11:27:58 kappa kernel: . Jan 03 11:27:58 kappa kernel: . Jan 03 11:27:59 kappa kernel: . Jan 03 11:27:59 kappa kernel: . Jan 03 11:28:00 kappa kernel: . Jan 03 11:28:00 kappa kernel: . Jan 03 11:28:01 kappa kernel: . Jan 03 11:28:01 kappa kernel: . Jan 03 11:28:02 kappa kernel: . Jan 03 11:28:02 kappa kernel: . Jan 03 11:28:03 kappa kernel: . Jan 03 11:28:03 kappa kernel: . Jan 03 11:28:04 kappa kernel: . Jan 03 11:28:04 kappa kernel: . Jan 03 11:28:05 kappa kernel: . Jan 03 11:28:05 kappa kernel: . Jan 03 11:28:06 kappa kernel: . Jan 03 11:28:06 kappa kernel: . Jan 03 11:28:07 kappa kernel: . Jan 03 11:28:07 kappa kernel: . Jan 03 11:28:08 kappa kernel: . Jan 03 11:28:08 kappa kernel: . Jan 03 11:28:09 kappa systemd-udevd[613]: seq 2990 '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' is taking a long time Jan 03 11:28:09 kappa kernel: . Jan 03 11:28:09 kappa kernel: . Jan 03 11:28:10 kappa kernel: . Jan 03 11:28:10 kappa kernel: . Jan 03 11:28:11 kappa kernel: . Jan 03 11:28:11 kappa kernel: . Jan 03 11:28:12 kappa kernel: . Jan 03 11:28:12 kappa kernel: . Jan 03 11:28:14 kappa kernel: . Jan 03 11:28:14 kappa kernel: . Jan 03 11:28:15 kappa kernel: . Jan 03 11:28:15 kappa kernel: . Jan 03 11:28:16 kappa kernel: . Jan 03 11:28:16 kappa kernel: . Jan 03 11:28:17 kappa kernel: . Jan 03 11:28:17 kappa kernel: . Jan 03 11:28:18 kappa kernel: . Jan 03 11:28:18 kappa kernel: . Jan 03 11:28:19 kappa kernel: . Jan 03 11:28:19 kappa kernel: . Jan 03 11:28:20 kappa kernel: . Jan 03 11:28:20 kappa kernel: . Jan 03 11:28:21 kappa kernel: . Jan 03 11:28:21 kappa kernel: . Jan 03 11:28:22 kappa kernel: . Jan 03 11:28:22 kappa kernel: . Jan 03 11:28:23 kappa kernel: . Jan 03 11:28:23 kappa kernel: . Jan 03 11:28:24 kappa kernel: . Jan 03 11:28:24 kappa kernel: . Jan 03 11:28:25 kappa kernel: . Jan 03 11:28:25 kappa kernel: . Jan 03 11:28:26 kappa kernel: . Jan 03 11:28:26 kappa kernel: . Jan 03 11:28:27 kappa kernel: . Jan 03 11:28:27 kappa kernel: . Jan 03 11:28:28 kappa kernel: . Jan 03 11:28:28 kappa kernel: . Jan 03 11:28:29 kappa kernel: . Jan 03 11:28:29 kappa kernel: . Jan 03 11:28:30 kappa kernel: . Jan 03 11:28:30 kappa kernel: . Jan 03 11:28:31 kappa kernel: . Jan 03 11:28:31 kappa kernel: . Jan 03 11:28:33 kappa kernel: . Jan 03 11:28:33 kappa kernel: . Jan 03 11:28:34 kappa kernel: . Jan 03 11:28:34 kappa kernel: . Jan 03 11:28:35 kappa kernel: . Jan 03 11:28:35 kappa kernel: . Jan 03 11:28:36 kappa kernel: . Jan 03 11:28:36 kappa kernel: . Jan 03 11:28:37 kappa kernel: . Jan 03 11:28:37 kappa kernel: . Jan 03 11:28:38 kappa kernel: . Jan 03 11:28:38 kappa kernel: . Jan 03 11:28:39 kappa kernel: . Jan 03 11:28:39 kappa kernel: . Jan 03 11:28:40 kappa kernel: . Jan 03 11:28:40 kappa kernel: . Jan 03 11:28:41 kappa kernel: . Jan 03 11:28:41 kappa kernel: . Jan 03 11:28:42 kappa kernel: . Jan 03 11:28:42 kappa kernel: . Jan 03 11:28:43 kappa kernel: . Jan 03 11:28:43 kappa kernel: . Jan 03 11:28:44 kappa kernel: . Jan 03 11:28:44 kappa kernel: . Jan 03 11:28:45 kappa kernel: . Jan 03 11:28:45 kappa kernel: . Jan 03 11:28:46 kappa kernel: . Jan 03 11:28:46 kappa kernel: . Jan 03 11:28:47 kappa kernel: . Jan 03 11:28:47 kappa kernel: . Jan 03 11:28:48 kappa kernel: .not responding... Jan 03 11:28:48 kappa kernel: sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jan 03 11:28:48 kappa kernel: sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] Jan 03 11:28:48 kappa kernel: sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable Jan 03 11:28:48 kappa kernel: .not responding... Jan 03 11:28:48 kappa kernel: sd 0:0:3:0: [sdc] Attached SCSI removable disk Jan 03 11:28:48 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:30:09 kappa systemd-udevd[613]: seq 2990 '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' killed Jan 03 11:30:29 kappa kernel: ...............................................................................................not responding... Jan 03 11:30:29 kappa systemd-udevd[613]: worker [15183] terminated by signal 9 (Killed) Jan 03 11:30:29 kappa systemd-udevd[613]: worker [15183] failed while handling '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' Jan 03 11:30:29 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:31:30 kappa systemd-udevd[613]: seq 2991 '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' is taking a long time Jan 03 11:32:09 kappa kernel: ...............................................................................................not responding... Jan 03 11:32:09 kappa kernel: sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jan 03 11:32:09 kappa kernel: sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] Jan 03 11:32:09 kappa kernel: sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable Jan 03 11:32:09 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:33:30 kappa systemd-udevd[613]: seq 2991 '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' killed Jan 03 11:33:50 kappa kernel: ...............................................................................................not responding... Jan 03 11:33:50 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:35:30 kappa kernel: ...............................................................................................not responding... Jan 03 11:35:30 kappa kernel: sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jan 03 11:35:30 kappa kernel: sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] Jan 03 11:35:30 kappa kernel: sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable Jan 03 11:35:30 kappa systemd-udevd[613]: worker [15182] terminated by signal 9 (Killed) Jan 03 11:35:30 kappa systemd-udevd[613]: worker [15182] failed while handling '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' Jan 03 11:35:30 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:36:31 kappa systemd-udevd[613]: seq 2992 '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' is taking a long time Jan 03 11:37:11 kappa kernel: ...............................................................................................not responding... Jan 03 11:37:11 kappa kernel: sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jan 03 11:37:11 kappa kernel: sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] Jan 03 11:37:11 kappa kernel: sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable Jan 03 11:37:11 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:38:31 kappa systemd-udevd[613]: seq 2992 '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' killed Jan 03 11:38:51 kappa kernel: ...............................................................................................not responding... Jan 03 11:38:51 kappa kernel: sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jan 03 11:38:51 kappa kernel: sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] Jan 03 11:38:51 kappa kernel: sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable Jan 03 11:38:51 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:40:32 kappa systemd-udevd[613]: worker [15297] terminated by signal 9 (Killed) Jan 03 11:40:32 kappa kernel: ...............................................................................................not responding... Jan 03 11:40:32 kappa systemd-udevd[613]: worker [15297] failed while handling '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' Jan 03 11:40:32 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:41:32 kappa systemd-udevd[613]: seq 2993 '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' is taking a long time Jan 03 11:42:12 kappa kernel: ...............................................................................................not responding... Jan 03 11:42:12 kappa kernel: sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jan 03 11:42:12 kappa kernel: sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] Jan 03 11:42:12 kappa kernel: sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable Jan 03 11:42:12 kappa kernel: sd 0:0:3:0: [sdc] Spinning up disk... Jan 03 11:43:32 kappa systemd-udevd[613]: seq 2993 '/devices/pci0000:00/0000:00:0a.0/0000:01:06.0/host0/target0:0:3/0:0:3:0/block/sdc' killed Jan 03 11:43:53 kappa kernel: ...............................................................................................not responding... Jan 03 11:43:53 kappa kernel: sd 0:0:3:0: [sdc] Read Capacity(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Jan 03 11:43:53 kappa kernel: sd 0:0:3:0: [sdc] Sense Key : Not Ready [current] Jan 03 11:43:53 kappa kernel: sd 0:0:3:0: [sdc] Add. Sense: Logical unit not ready, cause not reportable and so on until now.. journalctl shows best, that it is in fact udevd..