Error after scheduled backup task: Hosting on domain example.com is skipped from backup due to error: ack Broken pipe: write

Created:

2016-12-18 06:54:21 UTC

Modified:

2017-08-08 13:21:46 UTC

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Error after scheduled backup task: Hosting on domain example.com is skipped from backup due to error: ack Broken pipe: write

Applicable to:

  • Plesk Onyx for Linux

Symptoms

  • There is a full server backup task. FTP storage is configured in the backup settings. Option Store in FTP storage is selected in the scheduled task settings.

  • The following error is shown at Tools & Settings > Backup Manager after a task is finished:

    The backup was created, although some issues occurred and the backup might not be entirely valid.
  • If select View the log after the error text, the following errors or warnings will be shown:

    Warning: hosting "example.com"
    Hosting on domain example.com is skipped from backup due to error: ack Broken pipe:
    write( 14, 'clients/john.doe/domains/example.com/backup_domainmail_1612132314.tgz ' ) at /usr/local/psa/PMM/agents/shared/IPC/Run/IO.pm line 558.
    Warning: hosting "example.com"
    Unable to upload archive domains/example.com/backup_user-data_1612132314.tgz to FTP storage: ack Broken pipe: write( 14, 'clients/john.doe/domains/example.com/backup_domainmail_1612132314.tgz ' ) at /usr/local/psa/PMM/agents/shared/IPC/Run/IO.pm line 558.
  • The following error could be found in the PRODUCT_ROOT_D/PMM/sessions/YYYY-MM-DD-HHMMSS.096/migration.log :

    INFO: Pause before next attempt to upload file...
    INFO: Trying to resume upload...
    INFO: Curl output :
    INFO: * Found bundle for host ftp.example.com: 0x129e850
    INFO: * Re-using existing connection! (#2) with host ftp.example.com
    INFO: * Connected to ftp.example.com (203.0.113.2) port 21 (#2)
    INFO: * Request has same path as previous transfer
    INFO: > SIZE backup_1612121404.tar
    INFO: * ftp_perform ends with SECONDARY: 0
    INFO: < 213 3595766784
    INFO: > REST 0
    INFO: < 350 Restarting at position 0.
    INFO: * Remembering we are in dir "/"
    INFO: * Connection #2 to host ftp.example.com left intact
    INFO:
    INFO: Seek out of scope of stream cache (requested offset: 3595766784, stream offset: 3595828224, cache size: 1057792)
    INFO: The utility executed with the return code: -1

Cause

FTP command APPE is not working correctly or not supported on FTP server.

Resolution

Contact administrator of a FTP server specified in FTP Storage Settings at Tools & Settings > Backup Manager in order to fully implement support of APPE FTP command.

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