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Re: Disks renamed after update to 'testing'...?

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On 2020-08-19 03:03, Urs Thuermann wrote:
> David Christensen <dpchrist@holgerdanske.com> writes:

>> When using a drive as backup media, are there likely use-cases that
>> benefit from configuring the drive with no partition, a single PV,
>> single VG, single LV, and single filesystem vs. configuring the drive
>> with a single partition, single UUID fstab entry, and single
>> filesystem?
> 
> You can use a partition or the whole disk for a physical volume

Yes.


> ... I prefer having a partition table with only one partition
> covering the whole disk.  The partition table entry includes a type so
> that there is less guessing about what the disk contains:

This is especially true if you access the drive with foreign operating 
systems.


> If you then put a single LV into the VG which covers the whole VG you
> don't benefit much from LVM's functionality, except that you can
> easily change allocations later if you decide so. 

Some backup tools, such as macOS Time Machine and Windows File History, 
automatically delete old backups if and when the destination filesystem 
becomes full.  So, one use-case would be if the drive were the 
destination for several such backup tools -- use LVM to subdivide the 
available space among them.


Another use-case is enlarging the backup filesystem by adding another drive.


Another use-case is mirroring the backup filesystem.


A more complex mirroring use-case -- add, re-silver, and remove drives, 
and rotate them on-line, on-site, near-site, off-site, etc..


> Re-partitioning is more complicated. 

For a drive used as a PV for backups, I cannot think of a use-case for 
re-partitioning.


David

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Disks renamed after update to 'testing'...? "hobie of RMN" <hobie@rumormillnews.com> - 2020-08-18 01:50 +0200
  Re: Disks renamed after update to 'testing'...? David Christensen <dpchrist@holgerdanske.com> - 2020-08-18 03:30 +0200
    Re: Disks renamed after update to 'testing'...? "hobie of RMN" <hobie@rumormillnews.com> - 2020-08-18 06:10 +0200
      Re: Disks renamed after update to 'testing'...? john doe <johndoe65534@mail.com> - 2020-08-18 08:40 +0200
        Re: Disks renamed after update to 'testing'...? didier gaumet <didier.gaumet@gmail.com> - 2020-08-18 10:30 +0200
          Re: Disks renamed after update to 'testing'...? Nicolas George <george@nsup.org> - 2020-08-18 11:40 +0200
            Re: Disks renamed after update to 'testing'...? "Thomas Schmitt" <scdbackup@gmx.net> - 2020-08-18 12:20 +0200
          Re: Disks renamed after update to 'testing'...? "Thomas Schmitt" <scdbackup@gmx.net> - 2020-08-18 11:40 +0200
      Re: Disks renamed after update to 'testing'...? David Christensen <dpchrist@holgerdanske.com> - 2020-08-18 12:10 +0200
  Re: Disks renamed after update to 'testing'...? "Rick Thomas" <rick.thomas@pobox.com> - 2020-08-18 10:40 +0200
    Re: Disks renamed after update to 'testing'...? Urs Thuermann <urs@isnogud.escape.de> - 2020-08-18 20:40 +0200
      Re: Disks renamed after update to 'testing'...? David Christensen <dpchrist@holgerdanske.com> - 2020-08-18 22:00 +0200
        Re: Disks renamed after update to 'testing'...? Urs Thuermann <urs@isnogud.escape.de> - 2020-08-19 08:10 +0200
          Re: Disks renamed after update to 'testing'...? David Christensen <dpchrist@holgerdanske.com> - 2020-08-19 10:40 +0200
            Re: Disks renamed after update to 'testing'...? Urs Thuermann <urs@isnogud.escape.de> - 2020-08-19 12:10 +0200
              Re: Disks renamed after update to 'testing'...? David Christensen <dpchrist@holgerdanske.com> - 2020-08-19 23:50 +0200
                Re: Disks renamed after update to 'testing'...? <tomas@tuxteam.de> - 2020-08-20 09:50 +0200
                Re: Disks renamed after update to 'testing'...? Joe <joe@jretrading.com> - 2020-08-20 12:20 +0200
                Re: Disks renamed after update to 'testing'...? rhkramer@gmail.com - 2020-08-20 17:40 +0200
                Re: Disks renamed after update to 'testing'...? David Christensen <dpchrist@holgerdanske.com> - 2020-08-20 22:40 +0200
                Re: Disks renamed after update to 'testing'...? Dan Ritter <dsr@randomstring.org> - 2020-08-20 23:40 +0200
                Re: Disks renamed after update to 'testing'...? Andy Smith <andy@strugglers.net> - 2020-08-21 00:00 +0200
                Re: Disks renamed after update to 'testing'...? David Christensen <dpchrist@holgerdanske.com> - 2020-08-21 11:50 +0200
                Re: Disks renamed after update to 'testing'...? <tomas@tuxteam.de> - 2020-08-21 10:40 +0200
      Re: Disks renamed after update to 'testing'...? Urs Thuermann <urs@isnogud.escape.de> - 2020-08-19 09:00 +0200

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