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First, list all block devices with an identifier for their PCI device.
ls -al /sys/block/sd* lrwxrwxrwx 1 root root 0 Sep 6 10:01 /sys/block/sda -> ../devices/pci0000:00/0000:00:1f.2/ata3/host2/target2:0:0/2:0:0:0/block/sda lrwxrwxrwx 1 root root 0 Sep 6 10:01 /sys/block/sdb -> ../devices/pci0000:00/0000:00:1f.2/ata3/host2/target2:0:1/2:0:1:0/block/sdb lrwxrwxrwx 1 root root 0 Sep 6 10:01 /sys/block/sdc -> ../devices/pci0000:00/0000:00:1f.2/ata4/host3/target3:0:0/3:0:0:0/block/sdc lrwxrwxrwx 1 root root 0 Sep 6 10:01 /sys/block/sdd -> ../devices/pci0000:00/0000:00:1f.2/ata4/host3/target3:0:1/3:0:1:0/block/sdd lrwxrwxrwx 1 root root 0 Sep 6 10:01 /sys/block/sde -> ../devices/pci0000:00/0000:00:1e.0/0000:05:05.0/ata5/host4/target4:0:0/4:0:0:0/block/sde lrwxrwxrwx 1 root root 0 Sep 6 10:04 /sys/block/sdf -> ../devices/pci0000:00/0000:00:1e.0/0000:05:05.0/ata8/host7/target7:0:0/7:0:0:0/block/sdf
Note above that several disks are attached to
So what does that get us? Well, if you run
lspci with no arguments, you will realize that the PCI ids listed by
lspci correspond to the PCI ids output by the
ls command above.
The qualifying aspect here is
1f.2. Let’s use
lspci to determine which controller that is.
lspci | grep -i 1f.2 00:1f.2 IDE interface: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] (rev 01)
Ah, yes. I know that the Intel SATA controller would be the one on my motherboard, as opposed to the secondary SATA card I have installed.
What about the disks connected to
pci0000:00/0000:00:1e.0? That should be my secondary SATA card, right?
Let’s run the same
lspci command above, but using
1e.0 to confirm.
lspci | grep -i 1e.0 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
PCI Bridge. Ah, that’s showing us the
lspci entry for the PCI bridge itself, now for the SATA controller.
Let’s look at the original output of
ls -al /sys/block/sd* again.
There is a bit more specificity after
pci0000:00/0000:00:1e.0. Note the last bit after the last
pci0000:00/0000:00:1e.0/0000:05:05.0. Let’s search for that last qualifier.
lspci | grep -i 05.0 05:05.0 RAID bus controller: Silicon Image, Inc. SiI 3114 [SATALink/SATARaid] Serial ATA Controller (rev 02)
There we go! That’s the other SATA controller.
This will allow us to se all disks connected to that secondary SATA controller.
ls -al /sys/block/sd* | grep -i '05:05.0' lrwxrwxrwx 1 root root 0 Sep 6 10:20 /sys/block/sde -> ../devices/pci0000:00/0000:00:1e.0/0000:05:05.0/ata5/host4/target4:0:0/4:0:0:0/block/sde lrwxrwxrwx 1 root root 0 Sep 6 10:20 /sys/block/sdf -> ../devices/pci0000:00/0000:00:1e.0/0000:05:05.0/ata8/host7/target7:0:0/7:0:0:0/block/sdf
sdf are the two disks on that controller. Good to know!
You can see how, based on a name like
SiI 3114, you could find all devices. First, get the PCI id with
lspci, then use the other commands to get the devices.