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trakool's avatar
trakool
Level 3
8 years ago

the backup failed to back up the requested files(6)

Hi, Our enviroment we have master server version 7.5.0.5 in windows 2008r2 . Last week we are getting a error code 6 form NBU with the following error:

29/04/2017 2:29:29 AM - started process bpbrm (10656)
29/04/2017 2:29:30 AM - Info bpbrm(pid=10656) clientname is the host to backup data from
29/04/2017 2:29:30 AM - Info bpbrm(pid=10656) reading file list from client
29/04/2017 2:29:30 AM - connecting
29/04/2017 2:29:31 AM - Info bpbrm(pid=10656) listening for client connection
29/04/2017 2:29:37 AM - Info bpbrm(pid=10656) INF - Client read timeout = 300
29/04/2017 2:29:37 AM - Info bpbrm(pid=10656) accepted connection from client
29/04/2017 2:29:37 AM - Info bphdb(pid=2518) Backup started
29/04/2017 2:29:37 AM - Info bptm(pid=12760) start
29/04/2017 2:29:37 AM - Info bptm(pid=12760) using 1048576 data buffer size
29/04/2017 2:29:37 AM - Info bptm(pid=12760) setting receive network buffer to 4195328 bytes
29/04/2017 2:29:37 AM - Info bptm(pid=12760) using 30 data buffers
29/04/2017 2:29:37 AM - connected; connect time: 00:00:07
29/04/2017 2:29:38 AM - Info bptm(pid=12760) start backup
29/04/2017 2:29:39 AM - Info bptm(pid=12760) backup child process is pid 12392.13620
29/04/2017 2:29:39 AM - Info bptm(pid=12392) start
29/04/2017 2:29:39 AM - begin writing
29/04/2017 2:29:40 AM - Info bphdb(pid=2518) dbclient(pid=2518) wrote first buffer(size=262144)
29/04/2017 3:55:59 AM - Info bphdb(pid=2518) done. status: 6
29/04/2017 3:56:01 AM - Info bphdb(pid=2518) done. status: 6: the backup failed to back up the requested files
29/04/2017 3:56:01 AM - end writing; write time: 01:26:22
the backup failed to back up the requested files(6)

Attached is the DBClient log error

Could you please help me to resolve this?

and the error occurs for many time.

Thank you,

Trakool

  • Tousif's avatar
    Tousif
    7 years ago

    Hello,

     

    In provided log, it seems like client still have some issue with network.

    Snippet:

    05:34:48.890 [32058] <2> writeToServer: bytesSent = 133092 bytes
    05:34:48.890 [32058] <2> writeToServer: start send -- try=1
    05:34:48.890 [32058] <16> writeToServer: ERR - send() to server on socket failed: Connection timed out (110)
    05:34:48.890 [32058] <16> dbc_put: ERR - failed sending data to server

    Client able to send some amount of data but after some time it failed to send data to media server.

    I would recommend to involve your OS and Network team to investigate. I don't think troubleshooting from NBU site will help to resolve this issue.

     

    Regards, 

15 Replies

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  • Tape_Archived's avatar
    Tape_Archived
    Moderator
    8 years ago

    Please share bpcd and bpbkar logs on the client. Make sure all the connection between client, master and media servers are correct. Check if all basic configuration setting like bp.conf is set right.

    • trakool's avatar
      trakool
      Level 3
      8 years ago

      hello, thanks for your reply. I have not to create the bpcd and bpbkar logs on the client. I ensure for the connection between client, master and media servers are correct because this error it has happen to only full backup in some time.

      Regards,

      Trakool

      • Tousif's avatar
        Tousif
        Level 6
        8 years ago

        Hello,

         

        Thanks for the update.

        As you said, its intermittent issue. I would recommend to increase the client timeout value to 3600 and check if it work. Most of the time network hiccup or busy client causes this problem.

        If it not fix the issue then need to monitor the behavior of failure.

        Regards,

         

  • Tousif's avatar
    Tousif
    Level 6
    8 years ago

    Hello,

    Sharing my finding from dbclient logs.

    Error:
    01:11:52.271 [2477] <16> readCommFile: ERR - timed out after 900 seconds while reading from /usr/openv/netbackup/logs/user_ops/dbext/logs/2477.
    0.1493388024

    Cause:
    This message indicates that dbclient did not receive an expected update in the comm file before a timer expired.
    The timeout is fatal if it occurs before the backup image transfer begins.

    Solution:
        
    The following items should be considered before adjusting the Client Read Timeout or Server Read Timeout settings.

     
    1)     Determine the reason for the backup delay before adjusting timeouts, and also the maximum length of the observed delay.

    2)     Whenever possible, resolve the root cause of the delay instead of increasing the timeouts; backup and restore operations will work more efficiently and consistently.

    3)     A temporary increase to one of the timeouts may be useful to allow successful operations while performing root cause analysis.  Be sure to revert to the original timeout value after the root cause is resolved.

     

    Note: The NBU 7.5.x, 7.6.x are EOSL. Kindly upgrade your NetBackup environment as soon as possible.

     

    Regards,