AHCI driver and static device names
lists at midsummerdream.org
Sat Dec 3 16:11:25 UTC 2011
glabel looks to place a label on the whole disk, but the manpage is
unclear (to me) how the partitions are handled. If I use glabel to
label a disk "test" and this disk has 4 partitions on it, then how is
each partition accessed? testp1...testp4 for gpt?
The other option seems to be to use tunefs or a partitioning tool to
label each partition, which is even more ugly imo.
On 12/2/11 9:27 PM, Derrick Ryalls wrote:
> Look for disk labels, I think glabel is the command. Then you use
> /dev/label/mylabel etc for the disks.
> Let me know if this isn't enough to find the right man page or spot in
> the handbook. I use it in my raid array but am running short on time
> right now.
> On Fri, Dec 2, 2011 at 6:51 PM, Rob <lists at midsummerdream.org
> <mailto:lists at midsummerdream.org>> wrote:
> I was getting ready to install the latest FreeBSD 9-RCs image, and I
> found that 9 now defaults to using the ahci driver for sata disks.
> This would be great if it weren't for the fact that the ahci
> driver seems to do dynamic device name assignment as opposed to the
> static ones used with the older drivers.
> I've looked around on google and while this is mentioned (in old
> threads), the "solution" is to use labels or elaborate mapping via
> hints which really aren't solutions imo. If I have 15 disks in an
> array, I want to be able to label them and know which bay is which
> device name. If I have to replace a drive, I have no idea what
> dynamic device name it will have when it comes time to partition
> (and label, if I were using that). I could probably figure it out
> by looking at what disks are used on the system, but that's more
> work that it really should be.
> Is there a way to use the ahci driver and get static device names?
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