Red Hat GLOBAL FILE SYSTEM 4.7 Podręcznik Użytkownika Pobierz pdf (Strona 56)

Installing and configuring Red Hat Enterprise Linux and SUSE Linux Enterprise Server 9 SP3 client systems3–22

• Examine the /etc/sfstab and /etc/sfstab.proto files to ensure that the mount directives

using the lnet: protocol have been added.

NOTE: The sfsconfig command uses the http: protocol to get configuration information from the

HP SFS servers. If the client node does not have access to the HP SFS servers over a TCP/IP network, or if

the servers are offline, the sfsconfig command will not be able to configure the client node correctly,

and you will have to modify the configuration file manually. For instructions on how to do this, see

Appendix B.

If all of the client systems that access the HP SFS system have now been upgraded to HP SFS Version 2.2,

proceed to Section 3.4.3 to disable Portals compatibility.

3.4.3 Step 3: Disabling Portals compatibility

If some of the client systems that access the HP SFS system have not yet been upgraded to HP SFS

Version 2.2, skip this step.

If all of the client systems that access the HP SFS system have now been upgraded to HP SFS Version 2.2,

Portals compatibility is no longer needed on the servers or the client systems. You must disable Portals

compatibility on the HP SFS servers and set the portals_compatibility attribute to none on all of the

client systems that access the HP SFS servers.

To disable Portals compatibility on the servers and client systems, perform the following steps. Note that you

must perform these steps on each client system that accesses the HP SFS system:

1. Unmount all Lustre file systems on the client nodes.

2. Disable Portals compatibility mode on the HP SFS servers; for information on how to do this, refer to

Chapter 8 of the HP StorageWorks Scalable File Share System Installation and Upgrade Guide,

specifically the section titled Disabling Portals compatibility mode (when client nodes have been

upgraded).

3. On the client node, edit the /etc/modprobe.conf.lustre or /etc/modules.conf.lustre

file and change the portals_compatibility setting to none.

4. Remount the Lustre file systems on the client nodes.

Repeat these steps on each client system that accesses the HP SFS system.

3.5 Downgrading HP SFS client software on RHEL and SLES 9 SP3

systems

The HP SFS client version must be capable of interoperating with the HP SFS server version on the servers

in the HP SFS system. See Section 1.3.1 for details of which HP SFS server and client software versions can

interoperate successfully.

To downgrade the HP SFS client software on RHEL or SLES 9 SP3 systems, perform the following steps:

1. On the node that you are going to downgrade, stop all jobs that are using Lustre file systems.

To determine what processes on a client node are using a Lustre file system, enter the fuser

command as shown in the following example, where /data is the mount point of the file system.

You must enter the command as root user; if you run the command as any other user, no output is

displayed:

# fuser -vm /data

USER PID ACCESS COMMAND

/data root 303 ..c.. su

user2 10993 ..c.. csh

user2 16408 ..c.. ssh

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 133 134

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