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A portion of data to be included from a previous backup has incorrect checksum

OxBrOps
Level 3

Hi,

Getting a:

media write error  (84)

on two out of four child jobs for a Full backup. The full details are included below:

09/02/2012 15:08:05 - Info nbjm (pid=12782) starting backup job (jobid=91480) for client clientmachine.ourdomain.com, policy Window_Clients, schedule Full
09/02/2012 15:08:06 - estimated 0 kbytes needed
09/02/2012 15:08:06 - Info nbjm (pid=12782) started backup (backupid=clientmachine.ourdomain.com_1346594885) job for client clientmachine.ourdomain.com, policy Window_Clients, schedule Full on storage unit DeDupe_Media1
09/02/2012 15:08:06 - started process bpbrm (pid=5900)
09/02/2012 15:08:11 - Info bpbrm (pid=5900) clientmachine.ourdomain.com is the host to backup data from
09/02/2012 15:08:11 - Info bpbrm (pid=5900) reading file list from client
09/02/2012 15:08:14 - Info bpbrm (pid=5900) accelerator enabled
09/02/2012 15:08:22 - connecting
09/02/2012 15:08:24 - Info bpbrm (pid=5900) starting bpbkar32 on client
09/02/2012 15:08:24 - connected; connect time: 0:00:00
09/02/2012 15:08:29 - Info bpbkar32 (pid=7916) Backup started
09/02/2012 15:08:29 - Info bptm (pid=5252) start
09/02/2012 15:08:29 - Info bptm (pid=5252) using 1048576 data buffer size
09/02/2012 15:08:29 - Info bptm (pid=5252) setting receive network buffer to 4195328 bytes
09/02/2012 15:08:29 - Info bptm (pid=5252) using 32 data buffers
09/02/2012 15:08:30 - Info bptm (pid=5252) start backup
09/02/2012 15:08:31 - Info bpbkar32 (pid=7916) change journal NOT enabled for <C:\>
09/02/2012 15:08:31 - Info bptm (pid=5252) backup child process is pid 7100.4936
09/02/2012 15:08:31 - Info bptm (pid=7100) start
09/02/2012 15:08:31 - begin writing
09/02/2012 15:08:40 - Critical bptm (pid=5252) A portion of data to be included from a previous backup (backupid = clientmachine.ourdomain.com_1345337792, offset = 470880256, length = 2048) has incorrect checksum (calculated checksum from backup image 3a44105bbec59cf1440b73f9d8ee14bf214165b5, expected checksum d663a7f2a8bd4f48d2ba3d2edd83be29ff5b3dfb)
09/02/2012 15:08:40 - Critical bptm (pid=5252) image write failed: error -1: plugin error
09/02/2012 15:08:44 - Error bptm (pid=5252) cannot write image to disk, Invalid argument
09/02/2012 15:08:44 - Info bptm (pid=5252) EXITING with status 84 <----------
09/02/2012 15:08:44 - Info media-server-1 (pid=5252) StorageServer=PureDisk:media-server-1.ourdomain.com; Report=PDDO Stats for (media-server-1.ourdomain.com): scanned: 459755 KB, CR sent: 630 KB, CR sent over FC: 0 KB, dedup: 99.9%, cache hits: 0 (0.0%)
09/02/2012 15:08:47 - end writing; write time: 0:00:16
media write error  (84)

Having taken a cursory look around using Google. I get very little about the message in the title of this post. Can someone help us?

4 REPLIES 4

Nicolai
Moderator
Moderator
Partner    VIP   

CRZ
Level 6
Employee Accredited Certified

Are you also using an Appliance?  (Versions please?)

OxBrOps
Level 3

We are using NetBackup 7.5.0.1 with 4 Media Servers andn 1 Master Server.

Mark_Solutions
Level 6
Partner Accredited Certified

You really need to get to 7.5.0.3 plus appropriate EEBs ASAP and then try things again - lots of issues with earlier versions.

See Late Breaking news for all fix details:

http://www.symantec.com/docs/TECH178334