#1735 Issue closed: UUID already in use on “/dev/”

Labels: support / question, fixed / solved / done

procurve86 opened issue at 2018-02-22 21:06:

Relax-and-Recover (ReaR) Issue Template

Fill in the following items before submitting a new issue
(quick response is not guaranteed with free support):

  • rear version (/usr/sbin/rear -V):
    Relax-and-Recover 2.2 / 2017-07-20

  • OS version (cat /etc/rear/os.conf or lsb_release -a):
    OS_VENDOR=RedHatEnterpriseServer OS_VERSION=7

  • rear configuration files (cat /etc/rear/site.conf or cat /etc/rear/local.conf):

# Create Relax-and-Recover rescue media as ISO image
OUTPUT=ISO
BACKUP=NETFS
NETFS_KEEP_OLD_BACKUP_COPY=no
NETFS_URL=nfs://10.1.30.20/u02/rear_backups

  • Are you using legacy BIOS or UEFI boot?
    UEFI

  • Brief description of the issue:
    When trying to rear recover on same machine with pv intact I got the following error for every disk device:

UUID "UUID" already in use on “/dev/sda”
  • Work-around, if any:
dd if=/dev/zero of=/dev/sda bs=409600 count=300

then restart recovery

Is this the expected behavior?
Is there a way to force pv recreation?
Would it be possible to add kind of a force switch to rear recover or a dialog?

Thanks and best regards
Daniel

jsmeix commented at 2018-02-23 10:16:

@procurve86
I assume "rear recover on same machine" means
that you run "rear recover" with an already used disk
in this case even with the exact same disk of your original system.

In general when you run "rear recover" with an already used disk
various weird issues can appear depending on what (remaining)
data there is on the already used disk.

For details and some examples see the issue
Add an early "cleanupdisk" script
https://github.com/rear/rear/issues/799
and follow the links therein.

Currently there is no such "cleanupdisk" script in ReaR.
In general it is therefore recommended to run "rear recover"
with a disk that was already fully cleaned up in advance
to avoid such issues.

jsmeix commented at 2018-02-23 10:18:

@procurve86
I think you can automate your workaround

dd if=/dev/zero of=/dev/sda bs=409600 count=300

via a PRE_RECOVERY_SCRIPT
see usr/share/rear/conf/default.conf

procurve86 commented at 2018-02-23 10:25:

Hi jsmeix

Thank you for your support!
I'll do it with proposal "PRE_RECOVERY_SCRIPT"

Have a nice weekend.

Best regards
Daniel

[Export of Github issue for rear/rear.]