https://bugzilla.kernel.org/show_bug.cgi?id=204769
Bug ID: 204769
Summary: SCSI devices missing for disks attached to controller
Product: SCSI Drivers
Version: 2.5
Kernel Version: 5.12.11
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: AACRAID
Assignee: scsi_drivers-aacr...@kernel-bugs.osdl.org
Reporter: li...@lanrules.de
Regression: No
We use an Adaptec ASR8405 RAID controller with LSI backplane. The RAID
controller is configured to expose attached disks to the system ("Expose RAW").
Up to Linux 5.1.12, devices would show as expected. lsscsi -v reports:
> [0:0:0:0] disk ASR8405 storage V1.0 /dev/sda
> dir: /sys/bus/scsi/devices/0:0:0:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:0:0/0:0:0:0]
> [0:1:4:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:4:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:4/0:1:4:0]
> [0:1:5:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:5:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:5/0:1:5:0]
> [0:1:6:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:6:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:6/0:1:6:0]
> [0:1:7:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:7:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:7/0:1:7:0]
> [0:1:8:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:8:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:8/0:1:8:0]
> [0:1:9:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:9:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:9/0:1:9:0]
> [0:1:10:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:10:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:10/0:1:10:0]
> [0:1:11:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:11:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:11/0:1:11:0]
> [0:1:12:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:12:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:12/0:1:12:0]
> [0:1:13:0] disk ATA HGST HUH721212AL T3D0 -
> dir: /sys/bus/scsi/devices/0:1:13:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:1:13/0:1:13:0]
> [0:3:0:0] enclosu LSI SAS3x36 0601 -
> dir: /sys/bus/scsi/devices/0:3:0:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:3:0/0:3:0:0]
> [N:0:4:1] dsk/nvm Samsung SSD 970 PRO 1TB__1 /dev/nvme0n1
> dir: /sys/class/nvme/nvme0/nvme0n1
> [/sys/devices/pci0000:10/0000:10:01.3/0000:13:00.0/nvme/nvme0/nvme0n1]
> [N:1:4:1] dsk/nvm Samsung SSD 970 PRO 1TB__1 /dev/nvme1n1
> dir: /sys/class/nvme/nvme1/nvme1n1
> [/sys/devices/pci0000:10/0000:10:01.4/0000:14:00.0/nvme/nvme1/nvme1n1]
On Linux 5.12.11, the devices are missing. lsscsi -v reports:
> [0:0:0:0] disk ASR8405 storage V1.0 /dev/sda
> dir: /sys/bus/scsi/devices/0:0:0:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:0:0/0:0:0:0]
> [0:3:0:0] enclosu LSI SAS3x36 0601 -
> dir: /sys/bus/scsi/devices/0:3:0:0
>
> [/sys/devices/pci0000:60/0000:60:03.1/0000:61:00.0/host0/target0:3:0/0:3:0:0]
> [N:1:4:1] dsk/nvm Samsung SSD 970 PRO 1TB__1 /dev/nvme1n1
> dir: /sys/class/nvme/nvme0/nvme1n1
> [/sys/devices/pci0000:10/0000:10:01.3/0000:13:00.0/nvme/nvme0/nvme1n1]
> [N:0:4:1] dsk/nvm Samsung SSD 970 PRO 1TB__1 /dev/nvme0n1
> dir: /sys/class/nvme/nvme1/nvme0n1
> [/sys/devices/pci0000:10/0000:10:01.4/0000:14:00.0/nvme/nvme1/nvme0n1]
Output in dmesg is basically the same, except that the following lines are
missing with the newer kernel:
> [ 17.016661] scsi 0:1:4:0: Direct-Access ATA HGST HUH721212AL T3D0
> PQ: 1 ANSI: 6
> [ 17.018313] scsi 0:1:5:0: Direct-Access ATA HGST HUH721212AL T3D0
> PQ: 1 ANSI: 6
> [ 17.020129] scsi 0:1:6:0: Direct-Access ATA HGST HUH721212AL T3D0
> PQ: 1 ANSI: 6
> [ 17.022530] scsi 0:1:7:0: Direct-Access ATA HGST HUH721212AL T3D0
> PQ: 1 ANSI: 6
> [ 17.024291] scsi 0:1:8:0: Direct-Access ATA HGST HUH721212AL T3D0
> PQ: 1 ANSI: 6
> [ 17.026041] scsi 0:1:9:0: Direct-Access ATA HGST HUH721212AL T3D0
> PQ: 1 ANSI: 6
> [ 17.027725] scsi 0:1:10:0: Direct-Access ATA HGST HUH721212AL
> T3D0 PQ: 1 ANSI: 6
> [ 17.029395] scsi 0:1:11:0: Direct-Access ATA HGST HUH721212AL
> T3D0 PQ: 1 ANSI: 6
> [ 17.031145] scsi 0:1:12:0: Direct-Access ATA HGST HUH721212AL
> T3D0 PQ: 1 ANSI: 6
> [ 17.032672] scsi 0:1:13:0: Direct-Access ATA HGST HUH721212AL
> T3D0 PQ: 1 ANSI: 6
The only change on the system to obtain the different behavior is
upgrade/downgrade of the kernel via kexec.
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