Hp StorageWorks Scalable File Share Bedienungsanleitung PDF herunterladen (Seite 110)

Creating and modifying file systems5–26

5.2.3.2 Using the create filesystem command in scripted mode — SFS20 storage

You can create a file system in scripted mode by entering the create filesystem command with all of

the parameters for the file system. The syntax for the script is as follows:

create filesystem filesystem_name parameter_list

For example:

create filesystem data mds_lun=3/south2 ost_lun=17/south3,18/south4 mount_point=/

mnt/data/ stripe_size=4MB stripe_count=2 quota_opts=quotaon=ug interconnect=tcp,gm

If you wish, you can use the interactive mode (as described in Section 5.2.3.1) to specify the file system

parameters interactively; then, when you are prompted to create the file system, enter no instead of

proceeding to create the file system. The screen output then shows the script that is required to create the

file system; you can capture this script and use it at a later time.

See Section A.6.5 for more information on using the create filesystem command in scripted mode.

5.2.4 Step 4: Backing up the system database

Back up the system database, as follows:

1. Back up the database, as follows:

# sfsmgr

sfs> create database_backup

2. Save the backup file to an external system, as shown in the following example, where the full name of

the backup file is /var/hpls.local/hplsdb_20040311-1041.tar.gz, the external system

host address is 16.123.123.1, and the account on the host is named fred:

# scp /var/hpls.local/hplsdb_200403011-1041.tar.gz \

5.3 LUN Roles, used by, and preferred server changes

When the create filesystem command creates a file system, it can change the Role, Used by, and

Preferred server fields for the LUN. The Preferred server field is set to whichever server you

specified to the create filesystem command. The values in the Role and Used by fields depend on

whether you chose to mirror an MDS or OST service across two LUNs, as follows:

• Non-mirrored. The Role field is unchanged. For MDS LUNs, the Used by field is set to the name of

the file system. For OST LUNs, the Used by field is set to the name of the OST service using that LUN.

• Mirrored. The create filesystem command creates a new LUN. This LUN is in effect a RAID1

device whose components are the LUNs you specified to the create filesystem command. The

Role field of each of the component LUNs is changed to mirror, and the Used by field is set to

the number of the new LUN.

The new LUN itself has a Role and Used by field. The Role field is set to either MDS or OST,

depending on whether the new LUN is used by an MDS or OST service. For MDS services, the Used

by field is set to the name of the file system. For OST services, the Used by field is set to the OST

service name.

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Hp StorageWorks Scalable File Share Bedienungsanleitung Seite 110