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Re: Switching from (deprecated) IDE driver -> SATA (PATA support)

To: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Subject: Re: Switching from (deprecated) IDE driver -> SATA (PATA support)
From: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>
Date: Sun, 25 Jan 2009 07:28:28 -0500 (EST)
Cc: linux-ide@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
In-reply-to: <alpine.DEB.1.10.0901250715030.10379@xxxxxxxxxxxxxxxx>
References: <alpine.DEB.1.10.0901250553430.2441@xxxxxxxxxxxxxxxx> <20090125110742.4ba54c0b@xxxxxxxxxxxxxxxxxxx> <alpine.DEB.1.10.0901250705300.6888@xxxxxxxxxxxxxxxx> <alpine.DEB.1.10.0901250715030.10379@xxxxxxxxxxxxxxxx>
User-agent: Alpine 1.10 (DEB 962 2008-03-14)


On Sun, 25 Jan 2009, Justin Piszcz wrote:



On Sun, 25 Jan 2009, Justin Piszcz wrote:



On Sun, 25 Jan 2009, Alan Cox wrote:

Easiest is to use labels. Old ide will keep hda,b,c,d constant
providing you have interfaces using the legacy IDE port mappings (0x1f0
and 0x170). Libata doesn't do that as pretty much every distribution had
already switched to volume labels, and the user space can do the job far
better than the kernel - especially as the newer devices with modern
interfaces don't have the old BIOS/DOS legacy ideas any more.

Mount by label also means you can flip back and forth between the
different drivers and kernel revisions.

Alan

It comes with one :)
# xfs_admin -u  /dev/sdd2
UUID = 77ae4251-631f-4656-a365-c5723f5c5da8

Will try to use this to boot; however, I'd prefer the labels over the UUID, wish there was an easy way to set it.

Justin.

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One final question, without udev, how does one determine the UUID of a non-XFS
partition, e.g., swap?

$ ls -l
total 0
lrwxrwxrwx 1 root root  9 2009-01-25 01:54 203fcd30-4e56-40e9-a8e5-93ddc8eb536a 
-> ../../md0
lrwxrwxrwx 1 root root 10 2009-01-25 01:54 2ef862e1-cf78-4065-a205-d1784716d633 
-> ../../sdd1
lrwxrwxrwx 1 root root 10 2009-01-25 01:54 77ae4251-631f-4656-a365-c5723f5c5da8 
-> ../../sdd2

p254:~# find /proc/|grep -i uuid
/proc/sys/kernel/random/uuid
p254:~# find /sys/|grep -i uuid p254:~#

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