HP StorageWorks Scalable File Share Release Notes - Version 2.2-1

New and changed features in HP SFS Version 2.2-11–16

1.7.1.2 Sect ion 2.4 D own g ra d in g H P SFS cl ient sof t wa re o n HP XC sys t ems

The steps to downgrade the HP SFS client software on the HP XC head node have been updated as follows:

1. If you are using XC Availability you must disable it before proceeding. If your XC system is Version 3.1

or higher and has availability enabled, run the transfer_from_avail command to disable

availability before stopping the SFS service and stopping any services in /hptc_cluster. For

details on how to use this command see the HP XC System Software Administration Guide.

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

If your system is an XC system and mounts /hptc_cluster over SFS then run this command to

determine what processes on the head node are using a Lustre file system:

# fuser -vm /hptc_cluster

Then stop the following services:

service nagios stop

service cmfd stop

service syslog-ng stop

service lsf stop

service slurm stop

service mysqld stop

NOTE: You currently cannot run service sfs stop when transfer_from_avail has

been run. This will be fixed in later versions of HP XC. For the moment you need to run

sfsumount -a as detailed below.

On systems that do not mount /hptc_cluster over SFS 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

user3 22513 ..c.. csh

user3 31820 ..c.. res

user3 31847 ..c.. 1105102082.1160

user3 31850 ..c.. 1105102082.1160

user3 31950 ..c.. mpirun

user3 31951 ..c.. srun

user1 32572 ..c.. bash

Alternatively, you can enter the following command (enter the command as root user; if you run the

command as any other user, the command only reports the current user’s references):

# lsof /data

COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME

su 5384 root cwd DIR 83,106 294912 393217 /data/user1

csh 10993 user2 cwd DIR 83,106 4096 52428801 /data/user2/bonnie

ssh 16408 user2 cwd DIR 83,106 4096 52428801 /data/user2/bonnie

csh 22513 user3 cwd DIR 83,106 4096 39682049

/data/user3/bids/noaa/runs/0128

res 31820 user3 cwd DIR 83,106 12288 39649281