https://community.hpe.com/t5/operating-system-hp-ux/frecover-checksum-errors/m-p/2809218#M939876 Hi<BR /><BR />frecover is experiencing intermittant I/O problems while running.<BR /><BR />Percentage wise it will be hardware.<BR /><BR />Check the syslog.log for errors<BR /><BR /><BR />Check also <BR />1)Latest scsi/tap epatches<BR />2)Can you read any other backups .<BR />3)Is there a heavy process on the same bus at the time of the frecover which could be a problem.<BR /><BR /><BR /> Steve Steel Thu, 19 Sep 2002 06:24:59 GMT Steve Steel 2002-09-19T06:24:59Z https://community.hpe.com/t5/operating-system-hp-ux/frecover-checksum-errors/m-p/2809217#M939875 GDay All,<BR /><BR />Has anyone come across the following errors. These errors have occured while doing an frecover verification after a nightly backup<BR /><BR />Error is .....<BR /><BR />frecover(1020): block checksum mismatch<BR />frecover(1003): backup id does not match expected value<BR />frecover(1061): attempt to continue recovery with new backup id? (^[yY]/^[nN]) frecover(5427): unable to open controlling terminal<BR /><BR />have done a "cstm" on the tape device and the info is ....<BR /><BR />Hardware path: 8/8.6.0<BR /><BR /><BR />Device Qualifier: QUANTUMDLT8000<BR />Product ID: DLT8000 Hardware Path: 8/8.6.0<BR />Device Type: SCSI Tape Logical Unit Number: 0<BR />Vendor: QUANTUM Product Rev Level: 010F<BR />Firmware Major Version: 15 Firmware Minor Version: 0<BR />Read Errors Corrected: 0 Read Errors Uncorrected: 0<BR />Write Errors Corrected: 0 Write Errors Uncorrected: 0<BR />Tape Motion Hours: 1099 Power On Hours: 19060<BR />Read Compression Ratio: 1.0 : 1 Write Compression Ratio: 1.0 : 1<BR />Compression Status: Enabled<BR />Serial Number: CXA11P1343<BR />Drive Status: Good<BR />-- Information Tool Log for SCSI Tape on path 8/8.6.0 --<BR /><BR />The initial fbackup string is ....<BR /><BR />/etc/fbackup -v -c $BACKUP/config -f $TAPEDRIVE -g $GRAPH &gt;&gt; $TAPELIST 2&gt;&amp;1<BR /><BR />Then the frecover string is ...<BR /><BR />/etc/frecover -r -N -v -f $TAPEDRIVE &gt;&gt; $TAPEVERIFY 2&gt;&amp;1<BR /><BR />The tape device used is ....<BR /><BR />TAPEDRIVE=/dev/rmt/0m<BR /><BR />The contents of the config file used in the fbackup command is ....<BR /><BR /># cat config<BR />blocksperrecord 128<BR />records 64<BR />checkpointfreq 256<BR />readerprocesses 3<BR />maxretries 2<BR />retrylimit 5000000<BR />maxvoluses 5000<BR />chgvol /var/adm/fbackupfiles/chgvol<BR />error /var/adm/fbackupfiles/error<BR />filesperfsm 200<BR /><BR />All DLT tapes have been replaced with new ones<BR /><BR />Appreciate any input.<BR /><BR />cheers<BR />Tom<BR /> Thu, 19 Sep 2002 01:04:36 GMT https://community.hpe.com/t5/operating-system-hp-ux/frecover-checksum-errors/m-p/2809217#M939875 Tom Poczman 2002-09-19T01:04:36Z https://community.hpe.com/t5/operating-system-hp-ux/frecover-checksum-errors/m-p/2809218#M939876 Hi<BR /><BR />frecover is experiencing intermittant I/O problems while running.<BR /><BR />Percentage wise it will be hardware.<BR /><BR />Check the syslog.log for errors<BR /><BR /><BR />Check also <BR />1)Latest scsi/tap epatches<BR />2)Can you read any other backups .<BR />3)Is there a heavy process on the same bus at the time of the frecover which could be a problem.<BR /><BR /><BR /> Steve Steel Thu, 19 Sep 2002 06:24:59 GMT https://community.hpe.com/t5/operating-system-hp-ux/frecover-checksum-errors/m-p/2809218#M939876 Steve Steel 2002-09-19T06:24:59Z