is it possible to capture the UUID number before creating file system on disk
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0
down vote
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is it possible to capture the UUID number before creating file system on disk?
if yes how - by which command ?
blkid ( before run mkfs.ext4 on sdb disk )
<no output>
blkid ( after run mkfs.ext4 on sdb disk )
/dev/sdb: UUID="9bb52cfa-0070-4824-987f-23dd63efe120" TYPE="ext4"
Goal - we want to capture the UUID number on the Linux machines disks before creation the file system
linux filesystems disk uuid mkfs
asked Jan 5 at 7:07
yael
2,0091145
add a comment |Â
up vote
0
down vote
favorite
is it possible to capture the UUID number before creating file system on disk?
if yes how - by which command ?
blkid ( before run mkfs.ext4 on sdb disk )
<no output>
blkid ( after run mkfs.ext4 on sdb disk )
/dev/sdb: UUID="9bb52cfa-0070-4824-987f-23dd63efe120" TYPE="ext4"
Goal - we want to capture the UUID number on the Linux machines disks before creation the file system
linux filesystems disk uuid mkfs
asked Jan 5 at 7:07
yael
2,0091145
1. I recommend using partitions, not raw disks. Even if there's only ever going to be one partition spanning the entire disk. 2. An unformatted disk (or partition) won't have a UUID. If it has a partition table, it should have a PTUUID. If it is a partition, it should have a PARTUUID.
– cas
Jan 5 at 7:20
so final answer is no?
– yael
Jan 5 at 7:21
1
well, you can't capture a UUID if it doesn't exist.
– cas
Jan 5 at 7:22
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
is it possible to capture the UUID number before creating file system on disk?
if yes how - by which command ?
blkid ( before run mkfs.ext4 on sdb disk )
<no output>
blkid ( after run mkfs.ext4 on sdb disk )
/dev/sdb: UUID="9bb52cfa-0070-4824-987f-23dd63efe120" TYPE="ext4"
Goal - we want to capture the UUID number on the Linux machines disks before creation the file system
linux filesystems disk uuid mkfs
asked Jan 5 at 7:07
yael
2,0091145
is it possible to capture the UUID number before creating file system on disk?
if yes how - by which command ?
blkid ( before run mkfs.ext4 on sdb disk )
<no output>
blkid ( after run mkfs.ext4 on sdb disk )
/dev/sdb: UUID="9bb52cfa-0070-4824-987f-23dd63efe120" TYPE="ext4"
Goal - we want to capture the UUID number on the Linux machines disks before creation the file system
linux filesystems disk uuid mkfs
asked Jan 5 at 7:07
yael
2,0091145
edited Jan 5 at 7:13
asked Jan 5 at 7:07
yael
2,0091145
asked Jan 5 at 7:07
yael
2,0091145
asked Jan 5 at 7:07
yael
2,0091145
2,0091145
1. I recommend using partitions, not raw disks. Even if there's only ever going to be one partition spanning the entire disk. 2. An unformatted disk (or partition) won't have a UUID. If it has a partition table, it should have a PTUUID. If it is a partition, it should have a PARTUUID.
– cas
Jan 5 at 7:20
so final answer is no?
– yael
Jan 5 at 7:21
1
well, you can't capture a UUID if it doesn't exist.
– cas
Jan 5 at 7:22
add a comment |Â
1. I recommend using partitions, not raw disks. Even if there's only ever going to be one partition spanning the entire disk. 2. An unformatted disk (or partition) won't have a UUID. If it has a partition table, it should have a PTUUID. If it is a partition, it should have a PARTUUID.
– cas
Jan 5 at 7:20
so final answer is no?
– yael
Jan 5 at 7:21
1
well, you can't capture a UUID if it doesn't exist.
– cas
Jan 5 at 7:22
1. I recommend using partitions, not raw disks. Even if there's only ever going to be one partition spanning the entire disk. 2. An unformatted disk (or partition) won't have a UUID. If it has a partition table, it should have a PTUUID. If it is a partition, it should have a PARTUUID.
– cas
Jan 5 at 7:20
1. I recommend using partitions, not raw disks. Even if there's only ever going to be one partition spanning the entire disk. 2. An unformatted disk (or partition) won't have a UUID. If it has a partition table, it should have a PTUUID. If it is a partition, it should have a PARTUUID.
– cas
Jan 5 at 7:20
so final answer is no?
– yael
Jan 5 at 7:21
so final answer is no?
– yael
Jan 5 at 7:21
1
1
well, you can't capture a UUID if it doesn't exist.
– cas
Jan 5 at 7:22
well, you can't capture a UUID if it doesn't exist.
– cas
Jan 5 at 7:22
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
7
down vote
accepted
No and yes.
The command to create the filesystem is the one that generates the UUID. So, before running it there is no UUID to use to name the filesystem.
However, it is posible to use an specific UUID to create the filesystem:
$ uuid=$(uuidgen)
$ echo "$uuid"
9a7d78e5-bc6c-4b19-94da-291122af9cf5
$ mkfs.ext4 -U "$uuid"
The uuidgen program which is part of the e2fsprogs package
answered Jan 5 at 7:21
Isaac
6,8011834
excellent answer thank you so much
– yael
Jan 5 at 7:23
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
7
down vote
accepted
No and yes.
The command to create the filesystem is the one that generates the UUID. So, before running it there is no UUID to use to name the filesystem.
However, it is posible to use an specific UUID to create the filesystem:
$ uuid=$(uuidgen)
$ echo "$uuid"
9a7d78e5-bc6c-4b19-94da-291122af9cf5
$ mkfs.ext4 -U "$uuid"
The uuidgen program which is part of the e2fsprogs package
answered Jan 5 at 7:21
Isaac
6,8011834
excellent answer thank you so much
– yael
Jan 5 at 7:23
add a comment |Â
up vote
7
down vote
accepted
No and yes.
The command to create the filesystem is the one that generates the UUID. So, before running it there is no UUID to use to name the filesystem.
However, it is posible to use an specific UUID to create the filesystem:
$ uuid=$(uuidgen)
$ echo "$uuid"
9a7d78e5-bc6c-4b19-94da-291122af9cf5
$ mkfs.ext4 -U "$uuid"
The uuidgen program which is part of the e2fsprogs package
answered Jan 5 at 7:21
Isaac
6,8011834
excellent answer thank you so much
– yael
Jan 5 at 7:23
add a comment |Â
up vote
7
down vote
accepted
up vote
7
down vote
accepted
No and yes.
The command to create the filesystem is the one that generates the UUID. So, before running it there is no UUID to use to name the filesystem.
However, it is posible to use an specific UUID to create the filesystem:
$ uuid=$(uuidgen)
$ echo "$uuid"
9a7d78e5-bc6c-4b19-94da-291122af9cf5
$ mkfs.ext4 -U "$uuid"
The uuidgen program which is part of the e2fsprogs package
answered Jan 5 at 7:21
Isaac
6,8011834
No and yes.
The command to create the filesystem is the one that generates the UUID. So, before running it there is no UUID to use to name the filesystem.
However, it is posible to use an specific UUID to create the filesystem:
$ uuid=$(uuidgen)
$ echo "$uuid"
9a7d78e5-bc6c-4b19-94da-291122af9cf5
$ mkfs.ext4 -U "$uuid"
The uuidgen program which is part of the e2fsprogs package
answered Jan 5 at 7:21
Isaac
6,8011834
edited Jan 5 at 7:24
answered Jan 5 at 7:21
Isaac
6,8011834
answered Jan 5 at 7:21
Isaac
6,8011834
answered Jan 5 at 7:21
Isaac
6,8011834
6,8011834
excellent answer thank you so much
– yael
Jan 5 at 7:23
add a comment |Â
excellent answer thank you so much
– yael
Jan 5 at 7:23
excellent answer thank you so much
– yael
Jan 5 at 7:23
excellent answer thank you so much
– yael
Jan 5 at 7:23
add a comment |Â
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1. I recommend using partitions, not raw disks. Even if there's only ever going to be one partition spanning the entire disk. 2. An unformatted disk (or partition) won't have a UUID. If it has a partition table, it should have a PTUUID. If it is a partition, it should have a PARTUUID.
– cas
Jan 5 at 7:20
so final answer is no?
– yael
Jan 5 at 7:21
1
well, you can't capture a UUID if it doesn't exist.
– cas
Jan 5 at 7:22