IBM Tivoli Storage Manager for UNIX and Linux: Backup-Archive ...

LoopThe loop command starts an interactive command line session that is maintaineduntil you enter quit.If you are required to enter a password, you will be prompted for it before theloop mode prompt appears.Note: It is not possible to enter loop mode without a valid server contact. One ofthe consequences is that certain commands, such as restore backupset-location=file, will only be accepted on the initial command line when avalid server is not available.In an interactive command line session, it is unnecessary to precede each commandname with dsmc and your password, if one is required.In interactive mode, options you enter on the initial command line will overridethe value that you specified in your client user options file (dsm.opt) or dsm.sysfile. This value remains in effect for the entire interactive session unless overriddenby a different value on a given interactive command. For example, if you set thesubdir option to yes in your client user options file (dsm.opt), and you specify-subdir=no on the initial command line, the -subdir=no setting remains in effect forthe entire interactive session unless overridden by the -subdir=yes value on a giveninteractive command. However, the subdir=yes value only affects the command itis entered on. When that command completes, the value reverts back to-subdir=no, the value at the beginning of the interactive session.You can enter all valid commands in interactive mode except the schedule andloop commands.There are some options that you cannot use in the interactive session created bythe loop command and are identified in the option description by this statement:This option is valid only on the initial command line. It is not valid in interactive mode.See Chapter 9, “Using processing options,” on page 169 for options that you cannotuse in interactive mode.Notes:1. In loop mode, following a restore operation directly from tape, the mount pointis not released in case additional restore requests are made to that volume. Ifyou request a backup operation in the same session and that mount point is theonly one available, the backup operation will stop with the following message:Waiting for mount of offline mediaIn this case, the mount point is not released until one of the followingconditions is met:v The device class MOUNTRETENTION limit is satisfied.v The client idletimeout period is satisfied.v The dsmc loop session is closed after the restore operation completes,allowing you to start a subsequent loop mode session to perform the backupoperation.2. In interactive mode, you cannot enter a file specification that contains nationallanguage characters. If a command contains national characters, process thecommand in batch mode by preceding the command with the executableprogram name, dsmc.Chapter 10. Using commands 435