scicomp.jlab.org

Name
jqueue  - display information about outstanding jasmine read and write jobs.

Syntax  
jqueue search-key search-value [all | field1 field2 ...]

Description
Display the status of queued jasmine jobs (i.e. ones that have not transitioned into state Done, Cancelled, or Failed).  You select the set of jobs to return by specifying a search key and a corresponding search value.  You can also specify a set of fields to display, or simply accept the default set.

Search Key & Display Fields

Name
jput  - write files to tape

Syntax  
jput [options] file stub-dir/
jput [options] file stub-file
jput [options] file1 file2 ... stub-dir
jput [options] -m file1 stub-dir1 file2 stub-dir2 ...
jput [options] -r local-prefix stub-prefix file1 file2 ...

Description
Write one or more files to the Jefferson Lab mass storage system tape library.  Use -m to designate a specific stub directory for each source file.  Use the -r to direct files to stubs replacing local-prefix with stub-prefix.

Data is read from tape most commonly via a command named jget.  The requirements for using this tool
are:

1. a valid scientific computing
   certificate as described in "Getting
   Started",
   
2. access to /site/bin/jget on a
   supported machine.

Files may also be read from
tape via other special-purpose tools documented elsewhere. 
Regardless of the the way that read requests are generated, the
ultimate process that jasmine uses to service those requests is as
follows:

Jasmine maintains a directory hierarchy that uniquely names each file on tape. This stub filesystem allows users to organize files as though they existed within a conventional directory.  It also serves another important function: it maps each directory to a logical grouping, known as a volume set.  Files are stored on tape along with other files belonging to the same volume set.  Doing this simplifies auditing, permits efficiency gains on retrieval, and provides opportunity for physically moving tapes based upon their contents.