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Groups > linux.debian.user > #188852

Re: Talking about RAID - disks with same id

From Joe Pfeiffer <pfeiffer@cs.nmsu.edu>
Newsgroups linux.debian.user
Subject Re: Talking about RAID - disks with same id
Date 2017-11-10 18:10 +0100
Message-ID <uKkYy-6dO-5@gated-at.bofh.it> (permalink)
References <uJGop-4j2-5@gated-at.bofh.it> <uK3XH-2Vo-1@gated-at.bofh.it> <uKcHD-J9-1@gated-at.bofh.it>
Organization A noiseless patient Spider

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deloptes <deloptes@gmail.com> writes:

> Hi Joe,
>
> thank you for the mesage
>
> Joe Pfeiffer wrote:
>
>> This is normal.  It's the identical UUIDs that tell the system that the
>> partitions go into the same RAID array.
>> 
>> Here's what I see when I look at my RAID disks:
>> 
>> /dev/sda2: UUID="67d3c233-96a0-737c-5f88-ed9b936ea3ae"
>> UUID_SUB="48b56869-6f19-21b9-283f-3eee3ac90cf8" LABEL="snowball:1"
>> TYPE="linux_raid_member" PARTUUID="3bb3729a-528b-4384-b6a5-b6d9e148ed2a"
>> /dev/sdb2: UUID="67d3c233-96a0-737c-5f88-ed9b936ea3ae"
>> UUID_SUB="1f48f805-4173-78cd-1f52-957920f66335" LABEL="snowball:1"
>> TYPE="linux_raid_member" PARTUUID="1bdd3893-9346-49d2-8292-a61075ad0c5e"
>> 
>
> you see in your case PARTUUID is different for both members. In my case it
> is identical and this is what is bothering me

It's my understanding that PTUUID on a disk using an MBR corresponds to
the UUID on a disk using a GPT, not to PARTUUID (I don't know what on an
MBR-based disk would correspond to PARTUUID, if anything).

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Thread

Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-08 22:50 +0100
  Re: Talking about RAID - disks with same id David Christensen <dpchrist@holgerdanske.com> - 2017-11-08 23:40 +0100
    Re: Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-09 08:20 +0100
      Re: Talking about RAID - disks with same id David Christensen <dpchrist@holgerdanske.com> - 2017-11-09 19:20 +0100
        Re: Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-09 22:10 +0100
          Re: Talking about RAID - disks with same id David Christensen <dpchrist@holgerdanske.com> - 2017-11-09 23:50 +0100
  Re: Talking about RAID - disks with same id Tobx <net@tobx.de> - 2017-11-09 10:40 +0100
    Re: Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-09 22:20 +0100
  Re: Talking about RAID - disks with same id Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-11-10 00:00 +0100
    Re: Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-10 09:20 +0100
      Re: Talking about RAID - disks with same id Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-11-10 18:10 +0100
        Re: Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-10 20:50 +0100
        Re: Talking about RAID - disks with same id Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-11-12 17:20 +0100
      Re: Talking about RAID - disks with same id David Christensen <dpchrist@holgerdanske.com> - 2017-11-10 21:10 +0100
        Re: Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-10 23:30 +0100
      Re: Talking about RAID - disks with same id Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-11-12 17:00 +0100
        Re: Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-12 18:00 +0100
          Re: Talking about RAID - disks with same id Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-11-12 19:50 +0100
            Re: Talking about RAID - disks with same id deloptes <deloptes@gmail.com> - 2017-11-12 20:20 +0100

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