adding to fstab

[Adam Yates]

I concur with all of the suggestions to use blkid. I've had it come back
to bite me a number of times in large volume sets (raid or lvm).
I've taken drives out of machines and forgotten which order they were
in. Using the UUID this will not matter unlike if you reference the
physical path /dev/{s,h}dX. I've also had things like usb drives
or usb keyboards shift the physical path a letter or two and this
causes absolute mayhem on things like file servers.

Adam

On 4/17/13 6:44 AM, Martin Schulz wrote:
> Use blkid's as they are specific to a drive/Partition, else one can mess
> up when
> changes in the configuration occur.The multiple disk environment is the
> reason
> why blkid's are used, though names still work (sdXX etc).
>
>
>
>
> On 04.01.2013 20:52, Truhn, Chad wrote:
>> I would say "It depends".  I am not an expert here, just my own
>> opinion from my experiences.
>>
>> The benefit of using the label is that you are not 'hard coding' the
>> system to mount a disk at a specified location or can be used as an
>> alias of sorts.  Using a label can be more flexible in dynamic
>> environments where things can change.
>>
>> For example:
>>
>> There could be an environment where USB storage is randomly inserted
>> in the system and rather than have the user's work through fdisk and
>> decide which drive is which, label each partition with a label and
>> have them mount it that way.
>>
>> I have seen FC attached drives from a SAN go a bit crazy with which
>> device name they show up as that day (sdX, sdY, sdZ) due to the order
>> they were loaded in and labels can also help in that scenario (though
>> that is just a workaround to the 'real' issue).
>>
>> If you are on a desktop system and don't notice any problems I would
>> say that you can use whatever your heart desires.  I'm interested to
>> hear if anyone else has other things to say as well since I have never
>> really had a reason to use blkid.
>>
>>
>> Chad
>>
>> ------------------------------------------------------------------------
>> *From:* redhat-sysadmin-list-bounces at redhat.com
>> [redhat-sysadmin-list-bounces at redhat.com] on behalf of Clift, Tom CIV
>> NSWCDD, K55 [robert.clift at navy.mil]
>> *Sent:* Friday, January 04, 2013 2:22 PM
>> *To:* redhat-sysadmin-list at redhat.com
>> *Subject:* adding to fstab
>>
>> All, I have created a new partition on a spare drive and want to add
>> it to the fstab. I basically see three(3) different ways to do it. All
>> work but what is the preferred way.
>> 1. Use Blkid
>> 2. Use Label
>> 3. Use physical device (/dev/sdb1)
>> All seem to work fine.Any preference?
>>
>>
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>
>
>
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-- 
Adam Yates
Manager of Information Technology
Center for Computation and Technology (CCT)
231 Johnston Hall
Baton Rouge, LA 70803
225.578.8235