Virtual TapeServer 8.4 Configuration Guide

Maintaining GFS for VTS | 211
This file system requires approximately 1.25GB of free memory to run the gfs_fsck command.
Note that if the block size was 1K, running the gfs_fsck command would require four times the
memory, or 5GB.
l All data on a partition that is resized will be lost.
Keep in mind that performance and system operations will be slow when vaults are at maximum
capacity.
To create a vault in a GFS cluster
1. Launch a command prompt on a VTS server in the cluster and log in.
2. Become root:
su -
3. Choose the partition to use. You can view the /etc/fstab file to see the partitions that are
already in use. To view available partitions, enter the following command:
sg_map -x
The following is an example of the output of this command:
/dev/sg0 1 0 3 0 1 /dev/st0
/dev/sg1 10 0 0 0 12
/dev/sg2 10 0 0 1 0 /dev/sda
/dev/sg3 10 0 0 2 0 /dev/sdb
/dev/sg4 10 0 0 3 0 /dev/sdc
/dev/sg5 10 0 0 4 0 /dev/sdd
/dev/sg6 10 0 1 0 12
/dev/sg7 11 0 0 0 12
/dev/sg8 11 0 1 0 12
In this example, /dev/sdd is used on LUN 4.
If you cannot see a new LUN, you can rescan for it by entering this command:
/usr/local/tape/bin/rescan-scsi-bus.sh -l -c -r -w
If you cannot see the LUN after rescanning the SCSI connections, reboot the VTS server.
4. Configure the partition:
If the vault will be less than 2TB in size, complete the following steps to partition the disk:
a. Enter the following command to partition the device.
fdisk /dev/sdd