1 adding ost services to a file system, Adding ost services to a file system -30 – HP StorageWorks Scalable File Share User Manual

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Creating and modifying file systems

5–30

for the quotas options and that you do not change the values unless you are requested to do so by

your HP Customer Support representative.

You can also use the

modify filesystem

command to rewrite the LDAP configuration data for a file

system.

The following sections provide instructions for modifying various file system attributes:

•

Section 5.6.1 describes how to add OST services to a file system.

•

Section 5.6.2 describes how to change the preferred server for an OST or MDS service.

•

Section 5.6.3 describes how to modify service mount options.

•

Section 5.6.4 describes how to change the interconnects for a file system.

•

Section 5.6.5 describes how to change other file system attributes.

•

Section 5.6.6 describes how to rewrite LDAP configuration data

TIP:

You can also use the

modify filesystem

command in scripted mode; see Section A.6.5 for more

information.

5.6.1 Adding OST services to a file system

To add OST services to a file system, perform the following steps:

Unmount the file system on all client nodes.

CAUTION:

If the file system is mounted on a client node during the process of adding OST

services to the file system, it may cause serious problems: client nodes and servers may become

unstable, or may crash or hang.

Stop the file system as shown in the following example, where the

data

file is system is stopped:

sfs> stop filesystem data

Do not proceed to the next step (running the

modify filesystem

command) until the file system is

stopped; the file system is stopped when all of the file system services are in the

stopped

down

state. See Section 3.7 for more information on the

stop filesystem

command.

When the file system is stopped, enter the

modify filesystem

command, as shown in the

following example:

sfs> modify filesystem data

Select an option:

1) Add OSTs
2) Change stripe size
3) Change stripe count
4) Change mount point
5) Change preferred servers
6) Change LUN mount options
7) Change interconnect
8) Change Lustre timeout
9) Change quota options
w) Rewrite LDAP configuration data
c) Cancel

Enter your choice [c]: