Mount SAS drive

svenxix · 04-17-2012, 12:23 PM

I'm trying to boot from a live CD and access some SAS drives. The problem is that I don't know how to mount them. There are six drives connected together on the embedded array.

Are SAS drives named SDA or HDA? or how else are they referenced?

fdisk -l doesn't return anything
df doesn't show anything that looks like it could be a hard drive.
dmesg doesn't produce any useful results for sd or hd.

RichK@PassingCloud · 04-17-2012, 12:39 PM

I suspect you will not have the device drivers to mount the SAS drives.

In Solaris we use the devfsadm "device filesystem administration?" command to "re-discover" hardware.

After this command a format usually discovers the "new" disks.

What do you use in Linux?

I am NOT an expert on Live Disks, but it seems that they will not have the drivers you need for anything "off-piste". Anyone please correct me?

MensaWater · 04-17-2012, 12:40 PM

The array disk should show up as /dev/sd* assuming you have a driver that sees the array controller.

You said this is embedded array. What is the server? What is the array controller? We use a lot of Dell PowerEdge and they have SAS controllers - the driver needed is the mptsas driver. It may not be on your live CD or may need to be explicitly loaded at boot time by you. What Linux distro is the live CD?

/dev/hd* was for old IDE/ATA controllers but in modern kernels hard drives should show up as /dev/sd*.