Veritas Access 7.3 Administrator's Guide

To defragment a file system

• To defragment a file system, enter the following:

  Storage> fs defrag now fs_name time [defrag_level]

  fs_name	Specifies the name of the file system that you want to defragment. Note: The specified file system must be online before attempting to defragment the file system.
  time	Specifies the maximum time to run. The defragmentation options are processed until defragmentation is complete, or until the time limit expires. The time value should be larger than one minute. Potential time value output and what the values mean: 10M - indicates 10 minutes 1H20M - indicates 1 hour and 20 minutes Infinite - indicates the defragmentation process continues to run until the defragmentation process is done completely. There is no limit time.
  defrag_level	Specifies the defragmentation level such as dir, extent, or all.

  For example:

  Storage> fs defrag now fs1 1H20M
  It will take some time to do the defragmentation
  do you want to continue? yes|no
  y

To schedule a defragment job for a file system.

1. Create a defrag schedule job for a file system that reoccurs once a week:

   Storage> fs defrag schedule create sched_name sched_duration \
   minute [hour] [day_of_the_month] \
   [month] [day_of_the_week]

   sched_name	Specifies the the name of the schedule.
   sched_duration	Specifies the duration of the defragmenatation job.
   minute	Specifies the minute (0-59).
   hour	Specifies the hour (0-23).
   day_of_the_month	Specifies the day of the month (1-31).
   month	Specifies the month of the year (1-12).
   day_of_the_week	Specifies the day of the week (0-6 with 0=Sunday).

   For example:

   Create a defrag schedule called schedule1 that runs at 11:00 pm every Saturday for a duration of 2 hours.

   Storage> fs defrag schedule create schedule1 2 0 23 * * 6
   ACCESS defrag Success V-288-999 Defrag Schedule creation succeeded 

   The number 2 after schedule1 is the duration of how long the defrag schedule will run. 0 indicates minutes and 23 is the hour for which the defrag schedule will run.

2. Show the defrag schedule details:

   Storage> fs defrag schedule show sched_name

   For example:

   Show the defrag schedule details of schedule1:

   Storage> fs defrag schedule show schedule1
   Schedule Information for schedule1
   =============================================
   Name      Node      Duration Minute Hour Day Month WeekDay
   ====      ====      ======== ====== ==== === ===== =======
   schedule1 mtvnas_01 8hours   15     23   *   *     6

3. Start the defrag schedule job for a file system:

   Storage> fs defrag schedule start fs_name sched_name

   For example

   Start the defrag schedule1 schedule job for tpcc_data1 file system:

   Storage> fs defrag schedule start tpcc_data1 schedule1
   ACCESS defrag SUCCESS V-288-999 starting schedule1 for fsname 
   tpcc_data1

4. List the scheduled defrag job status for a file system:

   Storage> fs defrag schedule list fs_name

   For example:

   List the scheduled defrag job status for tpcc_data1 file system :

   Storage> fs defrag schedule list tpcc_data1
   Schedule Information for tpcc_data1
   =============================================
   Name      Node      Duration Minute Hour Day Month WeekDay
   ====      ====      ======== ====== ==== === ===== =======
   schedule1 mtvnas_01 8hours   15     23   *   *     6