Migration error: Unable to create dump. Free reserved disk space at /tmp/panel_migrator/pmm_agent/

Created:

2016-11-16 13:01:47 UTC

Modified:

2017-08-16 16:03:16 UTC

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Migration error: Unable to create dump. Free reserved disk space at /tmp/panel_migrator/pmm_agent/

Applicable to:

  • Plesk 11.x for Linux
  • Plesk 12.0 for Linux

Symptoms

Unable to migrate several or all domains:

[ERROR] Failed to fetch configuration data from Plesk servers
Cause: Command execution failed on the source server 'source' (www.example.com) with non-zero exit code.
command: cd /tmp/panel_migrator/pmm_agent; tar rf migration_dump.tar backup_info*
exit code: 2
stdout:
stderr: tar: backup_info*: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors

In /usr/local/psa/var/modules/panel-migrator/sessions/<session_id>/pmm-agent_<id>/dump.log file on the destination server the following error can be found:

Unable to create dump:
at Logging.pm line 108
Logging::error('Unable to create dump', 'fatal') called at PleskX.pl line 308
main::main() called at PleskX.pl line 322
[16376]: DEBUG Free reserved disk space at
/tmp/panel_migrator/pmm_agent/.fs_NaN_0

Free disk space on the source server is less than the size of vhosts directory with domains to be migrated (in the below example, vhosts directory size is 70G, while there is only 30G of free disk space on a server):

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdb 160G 123G 30G 81% /

# du /var/www/vhosts/ -sh
70G /var/www/vhosts/

Cause

Not enough free disk space on the source server to dump the data. The free disk space should be at least the data size that is needed to be migrated.

Resolution

Free up disk space on the source server so that there is enough space to store migration dump.

Alternatively, migrate domains in bunches so that dump size is not more than the free disc space on the source server.

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