noon
Greetings;
I had to replace a terrabyte drive a few days ago, and I'm mounting it in
fstab by its label.
How does one go about determining the UUID of this replacement device so I can
make my fstab more uniform in its use?
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
algorithm, n.:
Trendy dance for hip programmers.
1:06 p.m.
On Sat, 2009-04-25 at 13:00 -0400, Gene Heskett wrote:
Greetings;
I had to replace a terrabyte drive a few days ago, and I'm mounting it in
fstab by its label.
How does one go about determining the UUID of this replacement device so I can
make my fstab more uniform in its use?
----
blkid
Craig
--
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7:32 p.m.
Craig White wrote:
On Sat, 2009-04-25 at 13:00 -0400, Gene Heskett wrote:
> Greetings;
>
> I had to replace a terrabyte drive a few days ago, and I'm mounting it in
> fstab by its label.
>
> How does one go about determining the UUID of this replacement device so I can
> make my fstab more uniform in its use?
>
----
blkid
Craig
Or else "hal-device", which also works with swap partitions, etc.
-Philip
11:13 p.m.
On Saturday 25 April 2009, Philip A. Prindeville wrote:
Craig White wrote:
> On Sat, 2009-04-25 at 13:00 -0400, Gene Heskett wrote:
>> Greetings;
>>
>> I had to replace a terrabyte drive a few days ago, and I'm mounting it in
>> fstab by its label.
>>
>> How does one go about determining the UUID of this replacement device so
>> I can make my fstab more uniform in its use?
>
> ----
> blkid
Returned null. Oh, no argument, then it works. Including for swaps!
> Craig
Or else "hal-device", which also works with swap partitions, etc.
This worked, but boy is it verbose.
-Philip
Thanks guys.
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
We all dream of being the darling of everybody's darling.
11:34 p.m.
On Sun, 2009-04-26 at 00:13 -0400, Gene Heskett wrote:
On Saturday 25 April 2009, Philip A. Prindeville wrote:
>Craig White wrote:
>> On Sat, 2009-04-25 at 13:00 -0400, Gene Heskett wrote:
>>> Greetings;
>>>
>>> I had to replace a terrabyte drive a few days ago, and I'm mounting it
in
>>> fstab by its label.
>>>
>>> How does one go about determining the UUID of this replacement device so
>>> I can make my fstab more uniform in its use?
>>
>> ----
>> blkid
Returned null. Oh, no argument, then it works. Including for swaps!
----
well, technically, it only lists physical devices and if you have an lvm
setup with swap and logical volumes, it may require you to execute
lvdisplay to see them.
As for arguments, it actually has a man page
Craig
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11:08 a.m.
On Sunday 26 April 2009, Craig White wrote:
On Sun, 2009-04-26 at 00:13 -0400, Gene Heskett wrote:
> On Saturday 25 April 2009, Philip A. Prindeville wrote:
> >Craig White wrote:
> >> On Sat, 2009-04-25 at 13:00 -0400, Gene Heskett wrote:
> >>> Greetings;
> >>>
> >>> I had to replace a terrabyte drive a few days ago, and I'm mounting
it
> >>> in fstab by its label.
> >>>
> >>> How does one go about determining the UUID of this replacement device
> >>> so I can make my fstab more uniform in its use?
> >>
> >> ----
> >> blkid
>
> Returned null. Oh, no argument, then it works. Including for swaps!
----
well, technically, it only lists physical devices and if you have an lvm
setup with swap and logical volumes, it may require you to execute
lvdisplay to see them.
As for arguments, it actually has a man page
Incredible! An honest to goodness manpage for blkid? By golly, so it does,
Amazing... I have gotten used to all this new stuff not having one cuz the
authors are too busy|lazy to write a manpage for their latest masterpiece. :(
Offtopic:
The audio guys in particular. Sometimes I long for the OSS days, at least it
worked when it worked, not this heavily distorted from overloads whisper at
subliminal levels for all system sounds I have now. From FF, all the plugins
work great, but kde's sound effects other than the Charge that k3b plays at
the end are of the did I hear that, or was that my imagination working
overtime. There is no one on this list who has the foggiest idea how to get
the crap fedora ships to actually work, and only maybe 10% of it has manpages.
---------------
So I first gave it the argument /dev/sdc, figuring it would just show that
device, but that returned a null. By itself with no argument, the whole list
in short form. Nice. fstab fixed. Thank you.
Craig
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This message has been scanned for viruses and
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--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
"I prefer the blunted cudgels of the followers of the Serpent God."
-- Sean Doran the Younger
11:28 a.m.
New subject: getting sound working (was determining this UUID stuff)
Gene Heskett wrote:
Offtopic:
The audio guys in particular. Sometimes I long for the OSS days, at least it
worked when it worked, not this heavily distorted from overloads whisper at
subliminal levels for all system sounds I have now. From FF, all the plugins
work great, but kde's sound effects other than the Charge that k3b plays at
the end are of the did I hear that, or was that my imagination working
overtime. There is no one on this list who has the foggiest idea how to get
the crap fedora ships to actually work, and only maybe 10% of it has manpages.
I know the feeling - it took me a while to get sound working
correctly after upgrading to Fedora 10. Pulse Audio insisted on
trying to use device 1 instead of device 0. So it could not output
to my sound card. And because it was using the card, nothing else
could. Once I fixed that goof, all is well again.
Mikkel
--
Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!
3:31 a.m.
From: "Gene Heskett" <gene.heskett(a)verizon.net>
Sent: Saturday, 2009/April/25 21:13
On Saturday 25 April 2009, Philip A. Prindeville wrote:
>Craig White wrote:
>> On Sat, 2009-04-25 at 13:00 -0400, Gene Heskett wrote:
>>> Greetings;
>>>
>>> I had to replace a terrabyte drive a few days ago, and I'm mounting it
>>> in
>>> fstab by its label.
>>>
>>> How does one go about determining the UUID of this replacement device
>>> so
>>> I can make my fstab more uniform in its use?
>>
>> ----
>> blkid
Returned null. Oh, no argument, then it works. Including for swaps!
>> Craig
>
>Or else "hal-device", which also works with swap partitions, etc.
This worked, but boy is it verbose.
$blkid /dev/sda1
/dev/sda1: LABEL="/boot-7" UUID="bfe129cd-8087-4c0b-aad1-08508b7adee2"
SEC_TYPE="ext2" TYPE="ext3"
It works by partition not drive.
{^_-}
7:52 a.m.
On Sun, 2009-04-26 at 01:31 -0700, jdow wrote:
$blkid /dev/sda1
/dev/sda1: LABEL="/boot-7"
UUID="bfe129cd-8087-4c0b-aad1-08508b7adee2"
SEC_TYPE="ext2" TYPE="ext3"
It works by partition not drive.
----
I think it is more like, you won't see the results you expect if you
supply /dev/sdX as the argument because /dev/sdX is a physical device
and not a block device to Linux.
Thus an apparent non-answer is actually the correct answer returning no
block attributes queried for a physical device.
It's apparent in the first line of the man page...
NAME
blkid - command-line utility to locate/print block device attributes
Craig
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8:18 a.m.
On Sun, 2009-04-26 at 05:52 -0700, Craig White wrote:
On Sun, 2009-04-26 at 01:31 -0700, jdow wrote:
> $blkid /dev/sda1
> /dev/sda1: LABEL="/boot-7"
UUID="bfe129cd-8087-4c0b-aad1-08508b7adee2"
> SEC_TYPE="ext2" TYPE="ext3"
>
> It works by partition not drive.
----
I think it is more like, you won't see the results you expect if you
supply /dev/sdX as the argument because /dev/sdX is a physical device
and not a block device to Linux.
Physical drives are block devices too:
$ ls -l /dev/sda
brw-rw---- 1 root disk 8, 0 2009-04-25 18:06 /dev/sda
Note the 'b' at the start of the output line.
Filesystem or swap formatting *may* be applied at the drive level, but
is almost always applied at the partion level, so in the vast majority
of cases you will need to supply a partition ID to the blkid command
(ie., the argument to blkid needs to be the same argument that was
supplied to mkfs or mkswap -- drive if the drive was formatted,
partition if a partition was formatted, LV if an LV was formatted).
-Chris
11:12 a.m.
Craig White wrote:
On Sun, 2009-04-26 at 01:31 -0700, jdow wrote:
> $blkid /dev/sda1
> /dev/sda1: LABEL="/boot-7"
UUID="bfe129cd-8087-4c0b-aad1-08508b7adee2"
> SEC_TYPE="ext2" TYPE="ext3"
>
> It works by partition not drive.
----
I think it is more like, you won't see the results you expect if you
supply /dev/sdX as the argument because /dev/sdX is a physical device
and not a block device to Linux.
No, /dev/sdX is no different then /dev/sdX# as far as device files
are concerned. It is just that they are not normally labeled if you
have a partition table. But there is no reason you could not give it
one. It is also possible to use a disk without a partition table.
While it is not common usage, there is nothing stopping you from
running mke2fs /dev/sdX and mounting the file system using mount
/dev/sdX /mnt/filesystem.
Thus an apparent non-answer is actually the correct answer returning
no
block attributes queried for a physical device.
It's apparent in the first line of the man page...
NAME
blkid - command-line utility to locate/print block device attributes
Craig
The reasion it returns no results is because the device does not
have a UUID, not because it isn't a block device.
Mikkel
--
Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!
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10 comments
6 participants
participants (6)
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Chris Tyler -
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Gene Heskett -
jdow -
Mikkel -
Philip Prindeville