My dmesg is flooded with the following every ~second (note, the following repeat forever; but the exact sequence appears to vary):
ata15.00: failed to IDENTIFY (I/O error, err_mask=0x100)
ata15: limiting SATA link speed to 1.5 Gbps
ata15: SATA link down (SStatus 1 SControl 310)
ata15: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata15.00: failed to IDENTIFY (I/O error, err_mask=0x100)
I see PCI ID from
# ls -l /sys/class/ata_port/
lrwxrwxrwx 1 root root 0 Dec 10 11:08 ata15 -> ../../devices/pci0000:00/0000:00:01.2/0000:02:00.0/0000:03:09.0/0000:08:00.0/ata15/ata_port/ata15
It appears (I'm not 100% on the output format of lspci) that the relevant PCI id/port here is 08; but there is no corresponding entry in ls -l /dev/disk/by-path
# ls -l /dev/disk/by-path
total 0
lrwxrwxrwx 1 root root 13 Dec 7 11:30 pci-0000:01:00.0-nvme-1 -> ../../nvme0n1
lrwxrwxrwx 1 root root 15 Dec 7 11:30 pci-0000:01:00.0-nvme-1-part1 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 15 Dec 7 11:30 pci-0000:01:00.0-nvme-1-part2 -> ../../nvme0n1p2
lrwxrwxrwx 1 root root 15 Dec 7 11:30 pci-0000:01:00.0-nvme-1-part3 -> ../../nvme0n1p3
lrwxrwxrwx 1 root root 15 Dec 7 11:30 pci-0000:01:00.0-nvme-1-part5 -> ../../nvme0n1p5
lrwxrwxrwx 1 root root 9 Dec 7 11:30 pci-0000:04:00.0-ata-1 -> ../../sdb
lrwxrwxrwx 1 root root 9 Dec 7 11:30 pci-0000:04:00.0-ata-2 -> ../../sr0
lrwxrwxrwx 1 root root 9 Dec 7 11:30 pci-0000:09:00.0-ata-1 -> ../../sr1
lrwxrwxrwx 1 root root 9 Dec 7 11:30 pci-0000:09:00.0-ata-2 -> ../../sdc
lrwxrwxrwx 1 root root 10 Dec 7 11:30 pci-0000:09:00.0-ata-2-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 9 Dec 7 11:30 pci-0000:09:00.0-ata-5 -> ../../sdd
lrwxrwxrwx 1 root root 10 Dec 7 11:30 pci-0000:09:00.0-ata-5-part1 -> ../../sdd1
lrwxrwxrwx 1 root root 9 Dec 7 11:30 pci-0000:09:00.0-ata-6 -> ../../sde
lrwxrwxrwx 1 root root 10 Dec 7 11:30 pci-0000:09:00.0-ata-6-part1 -> ../../sde1
I believe the relevant device from lspci -nn is
08:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] (rev 51)
Is there a way to glean any more information about what device is attached here? I don't have easy physical access to the machine to trial-and-error. (FWIW, The only hypothesis I could offer is this is a DVDR drive that the server has installed for manual hard backups.)
