udev failed to start on Debian 8.8, rear 2.1

[bmarshmn]

Relax-and-Recover (ReaR) Issue Template

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(quick response is not guaranteed with free support):

• rear version (/usr/sbin/rear -V): 2.1

• OS version (cat /etc/rear/os.conf or lsb_release -a):
  Distributor ID: Wazo
  Description: Wazo GNU/Linux 8.8 (jessie)
  Release: 8.8
  Codename: jessie

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

create a backup using the internal NETFS method, using 'tar'

BACKUP=NETFS

write both rescue image and backup to the device labeled REAR-000

BACKUP_URL=usb:///dev/disk/by-label/REAR-000

• Are you using legacy BIOS or UEFI boot?
  pretty sure legacy

• Brief description of the issue:
  when booting from the USB stick, systemd-udevd.service failed to start
  w/out udev the LVM names were not updated in /dev and the LVM create was unable to proceed

• Work-around, if any:
  I found this, add workaround for systemd scripts on debian 8: issue #599 #601
  and when I created the symlinks per the script, udev was able to start

[jsmeix]

@bmarshmn
your described workaround indicates that the script
usr/share/rear/build/Debian/610_jessie_link_systemd_lib.sh
is not run in your case when you run
"rear mkbackup" or "rear mkrescue".

To check that run

rear -s mkrescue | grep ' build/'

which shows what 'build' stage scripts are run in your case.

[gdha]

On Ubuntu I get:

# rear -s mkrescue | grep jes
Source build/Debian/610_jessie_link_systemd_lib.sh

The script does run. Or, it is an USB issue or something is wrong with the script? Ubuntu tests performed by me are ISO and PXE not USB, so I cannot tell
@bmarshmn Any further input from your side?

[gdha]

As we cannot reproduce this problem reported we label it "won't fix"