[clug] achieving persistent device (disk) names
Kim Holburn
kim.holburn at nicta.com.au
Wed Dec 14 06:55:17 GMT 2005
Sorry I didn't see Leigh's answer. Ignore my last post.
On 2005 Dec 14, at 5:37 PM, Kim Holburn wrote:
> I was talking to Michael about this before and I mentioned using
> labels in fstab. Does anyone know how to read and write partitions
> labels?
>
>
>
> Here is an example from a redhat system:
>
> # more /etc/fstab
> LABEL=/ / ext3 defaults 1 1
> LABEL=/boot /boot ext3 defaults 1 2
> LABEL=/boot2 /boot2 ext3 defaults 1 2
> LABEL=/usr /usr ext3 defaults 1 2
> LABEL=/var /var ext3 defaults 1 2
> none /dev/pts devpts gid=5,mode=620 0 0
> none /proc proc defaults 0 0
> none /dev/shm tmpfs defaults 0 0
> /dev/cdrom /mnt/cdrom udf,iso9660 noauto,owner,kudzu,ro 0 0
> /dev/cdrom1 /mnt/cdrom1 udf,iso9660 noauto,owner,kudzu,ro 0 0
> /dev/fd0 /mnt/floppy auto noauto,owner,kudzu 0 0
> /dev/hde /mnt/floppy1 auto noauto,owner,kudzu 0 0
>
> On 2005 Dec 14, at 4:38 PM, Michael James wrote:
>
>> As the names /dev/sda, sdb, sdc, etc are allocated,
>> the system disk keeps getting pushed to the end of the list.
>>
>> This is a pain as I have to boot a rescue system
>> and edit /etc/fstab and /boot/grub/menu.1st
>>
>> I'd like to offer the system some hints
>> so it will always find it's system disk.
>> The data disks can be fixed up later.
>>
>> Is udev the way to do this?
>>
>> If it is, what udev rules will ensure a particular SYSFS disk
>> ALWAYS comes out as /dev/sda?
>>
>> Or if asking for "sda" is unwise, (it will probably already exist)
>> is there a convention? Something like "/dev/root" or "/dev/
>> system"?
>>
>> I tried this in "/etc/udev/udev.rules" but nothing happened.
>> BUS="scsi", SYSFS{model}="PERCRAID Mirror ", NAME="root"
>>
>> TIA,
>> michaelj
>> --
>> Konqueror has gotten so clever for its own boots
>> that it has forgotten what a web browser is for.
>> --
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>
> --
> Kim Holburn
> Security Manager, National ICT Australia Ltd.
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> kimholburn
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> Democracy imposed from without is the severest form of tyranny.
> -- Lloyd Biggle, Jr. Analog, Apr 1961
>
>
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--
Kim Holburn
Security Manager, National ICT Australia Ltd.
Ph: +61 2 61258620 M: +61 417820641 F: +61 2 6230 6121 aim://kimholburn
Email: kim.holburn at nicta.com.au - PGP Public Key on request
callto://kholburn
Cacert Root Cert: http://www.cacert.org/cacert.crt
Aust. Spam Act: To stop receiving mail from me: reply and let me know.
Use ISO 8601 dates [YYYY-MM-DD] http://www.saqqara.demon.co.uk/
datefmt.htm
Democracy imposed from without is the severest form of tyranny.
-- Lloyd Biggle, Jr. Analog, Apr 1961
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