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Groups > linux.debian.user > #274938
| From | Michael Stone <mstone@debian.org> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: The "uniqueness" of UUIDs |
| Date | 2024-11-27 18:00 +0100 |
| Message-ID | <JNtyp-c1FB-5@gated-at.bofh.it> (permalink) |
| References | (4 earlier) <JMZAl-bIAy-5@gated-at.bofh.it> <JN4gF-bLwC-5@gated-at.bofh.it> <JN5cK-bM7e-11@gated-at.bofh.it> <JN5cK-bM7e-9@gated-at.bofh.it> <JN5Pr-bMzv-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, Nov 26, 2024 at 04:35:13PM +0100, Roger Price wrote: >My understanding is that a Linux file system is a hierachical >structure starting with the root directory (/) which organises the >directories and files. The files are stored on various devices which >have identities such as /dev/sdxn, UUID or LABEL. These identities >are for the devices, not parts of the file system. Your understanding is wrong: the UUIDs you are talking about are a feature of the filesystem--that's why they appear in lsblk -f (filesystem) output. You can find the same UUID in filesystem-specific tools such as dumpe2fs; lsblk has logic to extract a UUID from each filesystem that it knows how to parse and which contains a UUID. There are other UUIDs associated with some storage devices, partitions, and all sorts of other things on a modern system, but they are not the filesystem UUID and are not what is displayed in lsblk -f. (lsblk -f does include some UUIDs which aren't in filesystems, but which are in some other on-disk structure logically similar to a filesystem; an example is LVM physical volumes [also visible via pvs -v].)
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Re: Adding a new boot disk while keeping old disk George at Clug <Clug@goproject.info> - 2024-11-25 08:30 +0100
Re: Adding a new boot disk while keeping old disk eben@gmx.us - 2024-11-25 16:10 +0100
Re: Adding a new boot disk while keeping old disk David Wright <deblis@lionunicorn.co.uk> - 2024-11-25 16:30 +0100
Re: Adding a new boot disk while keeping old disk Felix Miata <mrmazda@stanis.net> - 2024-11-25 16:40 +0100
Re: Adding a new boot disk while keeping old disk George at Clug <Clug@goproject.info> - 2024-11-26 01:50 +0100
The "uniqueness" of UUIDs Roger Price <debian@rogerprice.org> - 2024-11-26 09:00 +0100
Re: The "uniqueness" of UUIDs Nicolas George <george@nsup.org> - 2024-11-26 09:10 +0100
Re: The "uniqueness" of UUIDs Nicolas George <george@nsup.org> - 2024-11-26 09:40 +0100
Re: The "uniqueness" of UUIDs Roger Price <debian@rogerprice.org> - 2024-11-26 09:50 +0100
Re: The "uniqueness" of UUIDs Felix Miata <mrmazda@stanis.net> - 2024-11-26 09:30 +0100
Re: The "uniqueness" of UUIDs Roger Price <debian@rogerprice.org> - 2024-11-26 10:00 +0100
Re: The "uniqueness" of UUIDs Nicolas George <george@nsup.org> - 2024-11-26 10:10 +0100
Re: The "uniqueness" of UUIDs Roger Price <debian@rogerprice.org> - 2024-11-26 12:20 +0100
Re: The "uniqueness" of UUIDs <tomas@tuxteam.de> - 2024-11-26 12:40 +0100
Re: The "uniqueness" of UUIDs Nicolas George <george@nsup.org> - 2024-11-26 12:40 +0100
Re: The "uniqueness" of UUIDs <tomas@tuxteam.de> - 2024-11-26 10:30 +0100
Re: The "uniqueness" of UUIDs Nicolas George <george@nsup.org> - 2024-11-26 11:00 +0100
Re: The "uniqueness" of UUIDs Felix Miata <mrmazda@stanis.net> - 2024-11-26 15:00 +0100
Re: The "uniqueness" of UUIDs <tomas@tuxteam.de> - 2024-11-26 16:00 +0100
Re: The "uniqueness" of UUIDs Roger Price <debian@rogerprice.org> - 2024-11-26 16:40 +0100
Re: The "uniqueness" of UUIDs <tomas@tuxteam.de> - 2024-11-26 18:50 +0100
Re: The "uniqueness" of UUIDs Michael Stone <mstone@debian.org> - 2024-11-27 18:00 +0100
Re: The "uniqueness" of UUIDs Roger Price <debian@rogerprice.org> - 2024-11-26 16:00 +0100
Re: The "uniqueness" of UUIDs Arno Lehmann <al@its-lehmann.de> - 2024-11-26 09:30 +0100
Re: The "uniqueness" of UUIDs Arno Lehmann <al@its-lehmann.de> - 2024-11-26 10:50 +0100
Re: The "uniqueness" of UUIDs <tomas@tuxteam.de> - 2024-11-26 09:50 +0100
Re: The "uniqueness" of UUIDs pocket@homemail.com - 2024-11-26 13:20 +0100
Re: Adding a new boot disk while keeping old disk eben@gmx.us - 2024-11-25 18:30 +0100
Re: Adding a new boot disk while keeping old disk Hans <hans.ullrich@loop.de> - 2024-11-25 21:00 +0100
Re: Adding a new boot disk while keeping old disk <tomas@tuxteam.de> - 2024-11-25 18:00 +0100
Re: Adding a new boot disk while keeping old disk Default User <hunguponcontent@gmail.com> - 2024-11-25 18:40 +0100
Re: Adding a new boot disk while keeping old disk <tomas@tuxteam.de> - 2024-11-25 19:00 +0100
Re: Adding a new boot disk while keeping old disk Default User <hunguponcontent@gmail.com> - 2024-11-25 20:10 +0100
Re: Adding a new boot disk while keeping old disk eben@gmx.us - 2024-11-25 23:40 +0100
Re: Adding a new boot disk while keeping old disk Greg Wooledge <greg@wooledge.org> - 2024-11-26 00:00 +0100
Re: Adding a new boot disk while keeping old disk Felix Miata <mrmazda@stanis.net> - 2024-11-26 00:30 +0100
Re: Adding a new boot disk while keeping old disk Max Nikulin <manikulin@gmail.com> - 2024-11-26 03:40 +0100
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