Storage Foundation Cluster File System High Availability 8.0 Administrator's Guide - Linux

To create a soft WORM-enabled file

1. Soft WORM-enable and existing file system using the command:

   # /opt/VRTS/bin/fsadm -o softworm <path_of_mountpoint>

   Alternatively, create a new soft WORM-enabled file system.

   Sample command and output:

   # mkfs -t vxfs -o softworm /dev/vx/rdsk/testdg/vol1

   version 17 layout
   125829120 sectors, 62914560 blocks of size 1024, log size 65536 blocks
   rcq size 4096 blocks
   largefiles supported
   maxlink supported
   SOFTWORM supported
   maxts supported

2. Mount the file system.

   Sample command:

   # mount -t vxfs /dev/vx/dsk/testdg/vol1 /mnt1

3. Verify that the file system is soft WORM-enabled.

   # /opt/VRTS/bin/fsadm /mnt1

   largefiles,maxlink,softworm,maxts

   The presence of the softworm string in the output indicates that the file system is WORM-enabled.

4. Create a file.

   Sample command and output:

   # dd if=/dev/urandom of=/mnt1/a1 bs=1024 count=10

   10+0 records in
   10+0 records out
   10240 bytes (10 kB, 10 KiB) copied, 0.000653719 s, 15.7 MB/s

5. Set a retention period on the file by performing the following tasks sequentially:

   • Change the access time of the file so that it has the same value as the retention period, by using the touch command.

     # touch -at YYYYMMDDhhmm.ss <file_name>

     For example, if a file named a1 must be retained till 27th June 2036 09:49:50 pm, run:

     # touch -at 203606270949.50 /mnt1/a1

   • Mark the file as read-only by changing its permissions.

     For example, to make the a1 file read-only, run:

     # chmod -w /mnt1/a1

6. Reduce the retention period of the file.

   For example, if a file named a1 must be retained till 27th June 2033 09:49:50 pm, run:

   # touch -at "203306270949.50" /mnt1/a1

7. Optionally, upgrade the file from soft WORM-enabled to WORM-enabled.

   Sample command:

   # /opt/VRTS/bin/fsadm -o worm <path_of_mountpoint>

   Note:

   You cannot change a WORM-enabled file to a soft WORM-enabled file.