Symptoms
-
A subscription backup fails with the following error message:
PLESK_ERROR: Error:
Undefined index: PLESK_DEBUG -
Server backups are performed successfully
-
The
DUMP_D
variable in/etc/psa/psa.conf
is configured to an NFS v3 storage -
Running flock to a file stored in the NFS storage fails with the following error:
# ( flock -x 9 || exit 1; echo ‘1: Locking for 5 secs’; sleep 5; echo ‘1: Done’ ) 9> /backups/lock
flock: 9: No locks availableWhere:
– The folder
/backups
is configured asDUMP_D
variable in/etc/psa/psa.conf
file.
Cause
Product issue:
-
#PPP-46555 “Subscription backups can now be created and stored in an NFS storage.”
Fixed in:- Plesk Obsidian 17 March 2020 (Linux)
Resolution
Please consider updating your server:
Workaround
If update is not possible for some reason you may try the following
workaround
As a workaround: Mount the NFS storage with local_lock=all
or local_lock=flock
parameter.