HP StorageWorks Scalable File Share - Manual (Page 61)

7 Known Issues and Workarounds
The following items are known issues and workarounds.
7.1 Server Reboot
After the server reboots, it checks the file system and reboots again.
/boot: check forced
You can ignore this message.
7.2 Errors from install2
You might receive the following errors when running install2.
error: package cpq_cciss is not installed
error: package bnx2 is not installed
error: package nx_nic is not installed
error: package nx_lsa is not installed
error: package hponcfg is not installed
You can ignore these errors.
7.3 Application File Locking
Applications using fcntl for file locking will fail unless HP SFS is mounted on the clients with
the flock option. See
“Installation Instructions” (page 40) for an example of how to use the
flock option.
7.4 MDS Is Unresponsive
When processes on multiple client nodes are simultaneously changing directory entries on the
same directory, the MDS can appear to be hung. Watchdog timeout messages appear in /var/
log/messages
on the MDS. The workaround is to reboot the MDS node.
7.5 Changing group_upcall Value to Disable Group Validation
By default the HP SFS G3.2-0 group_upcall value on the MDS server is set to /usr/sbin/
l_getgroups
. This causes all user and group IDs to be validated on the HP SFS server. Therefore,
the server must have complete information about all user accounts using /etc/passwd and
/etc/group
or some other equivalent mechanism. Users who are unknown to the server will
not have access to the Lustre file systems.
This function can be disabled by setting group_upcall to NONE using the following procedure:
1. All clients must umount the HP SFS file system.
2. All HP SFS servers must umount the HP SFS file system.
IMPORTANT: All clients and servers must not have HP SFS mounted. Otherwise, the file
system configuration data is corrupted.
3. Perform the following two steps on the MDS node only:
a.
tunefs.lustre --dryrun --erase-params --param="mdt.group_upcall=NONE" --writeconf /dev/mapper/mpath?
Capture all param settings from the output of dryrun. These must be replaced because
the --erase-params option removes them.
7.1 Server Reboot 61