Interstage Shunsaku Data Manager Operator's Guide - Microsoft(R) Windows(R) 2000/ Microsoft(R) Windows Server(TM) 2003 - - UNIX -

5.6 Recovering the Disk Fault on the Operation Log File

If a malfunction occurs in the disk containing the operation log files, Shunsaku will output a "shn30307u" message to the event log or the system log (syslog).

If an I/O error occurs in the operation log files, it will not be possible to perform a recovery to a state immediately before the malfunction or to a specified point in time. In such cases, the user should immediately perform the following procedure to restore the operation log files and then take a backup.

The following procedure is used to recover the operation log files.

[Figure : Procedure for Recovering Operation Log Files]

1. Check the event log or system log (syslog) to identify the location of the fault.

   If a disk fault occurs while the operation log file is being accessed, Shunsaku will output the following message to the event log or system log (syslog):

   shn30307u:An I/O error has occurred with an operation log file.
   file=file name System call=function name errno=error number (director) [director identifier]
   Shunsaku System Name=Shunsaku system name

   Use the message to confirm the name of the device where the disk fault occurred or the full pathname of the file.

2. Replace the faulty disk and recreate the directory that will contain the operation log files.
3. Execute the shundrecover command with the -l option to recover the operation log files.

   shundrecover -s director identifier -l

4. Execute the shundbackup command with the -b option to declare the start of the backup process.

   shundbackup -s director identifier -b

5. Back up the director data files.

   The directory specified by the DataFileFolder parameter in the director environment file contains a directory with the same name as the director identifier. Back up all the files from that directory.

   Use the following operating system commands or a disk device copy function to perform the backup:

   

   copy command, etc.

   

   cp command, etc.

6. Execute the shundbackup command with the -e option to declare the end of the backup.

   shundbackup -s director identifier -e

• Always back up the director data files after recovering the operation log files.
• This operation is necessary only if the OperationLogFolder parameter has been specified in the director environment file. In such cases, executing the shundrecover command with the -l option will result in an error.

Refer to A.3 Director Environment Files for more information on the execution parameters in the director environment file.