The following error appears when migration is started: "Unable to determine block size in df output."

Created:

2016-11-16 13:00:47 UTC

Modified:

2017-04-24 12:00:21 UTC

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The following error appears when migration is started: "Unable to determine block size in df output."

Applicable to:

  • Plesk for Linux

Symptoms

When running migration manager I get the same error few seconds after launch:

== STDERR ====================
Failed to execute scout.
The return code is 9
The output on STDERR is
Unable to determine block size in df output. First line looks like 'Dateisystem 512‐Blöcke Benutzt Verfügbar Kapazit. Eingehängt auf
' at - line 577.
==============================

Cause

German locale is set on the source server, but Migration Manager cannot parse German output of df command. This behavior has been confirmed as a software issue #PPPM-2450 , the fix is considered to be included in one of the next Plesk updates.

Resolution

Set English locale on the source server.

# export LANG=C
# export LC_ALL=C

Make sure that the output of df command is in English.

~ # df
Filesystem 1K-blocks Used Available Use% Mounted on
............................................................
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