SATA hotswap / hotplug

Christopher Mocock chris at
Thu Jul 17 12:37:54 UTC 2008

Hi list,

I'm trying to get SATA hot-swapping to work in Fedora 9 but I'm either 
having no luck or doing it wrong.

I've tried a variety of disk controllers including an LSI MegaRaid, 
3Ware 9550SX, and I'm now working with a Supermicro SAT2-MV8 (Marvell 
chipset - sata_mv module).

I was under the (possibly mistaken) impression that if I insert or 
remove a disk, I should see something in /var/log/messages. I've also 
been running "ls -l /dev/disk/by-path" to see if the device name appears 
or disappears, but it never does.

Is there any kind of special setup required or should it "just work"?

The disks I'm using are either Seagate SATA2 or older Hitachi SATA1 
drives, I have a few to play with. The disks are not formatted in any 
way as my application treats them as raw block devices. Still, I would 
expect to see the contents of /dev/disk/by-path to change when I insert 
or remove a disk.

When using the 3Ware card, I did get a message from the 3Ware driver 
saying that a disk had been removed or inserted, but it didn't change 
the contents of /dev/disk/by-path and the message was from the driver, 
not the kernel or udev or any other subsystem.

I should mention that the disks appear fine if they are inserted before 
I boot on all the disk controllers I've tried.

Any suggestions gratefully received.



More information about the fedora-list mailing list