HP XP P9500 Storage - Manual (Page 301)

• You cannot execute the partprobe command for HDLM devices because
this command does not support HDLM devices.
If you want to add a partition to or delete a partition from an HDLM
device (LU), first stop all applications that are using the target HDLM
device (LU) so that the HDLM device (LU) is not being used
# .
If you add or delete a partition while an HDLM device (LU) is being used,
restart the host to reload the partition table.
#
This state is achieved when none of the partitions of the HDLM device
(LU) are being used.
Notes When Using Red Hat Enterprise Linux 5, Red Hat Enterprise
Linux 6, or Oracle Enterprise Linux 5
Note the following when your OS is Red Hat Enterprise Linux 5, Red Hat
Enterprise Linux 6, or Oracle Enterprise Linux 5:
• SCSI devices corresponding to an HDLM device can be removed
dynamically even while the HDLM device is in use. Before doing so,
perform the following operations:
a
.
Unmount any devices mounted on the HDLM device.
b
.
Execute the dlmcfgmgr -o command to exclude the HDLM device
from management.
• HDLM devices cannot be used to create an md device.
• When a device is dynamically configured by using the udev function, the
messages shown below might be output to the console or syslog.
However, HDLM operations are not affected.
Output example:
scsi_id[a01]: scsi_id: unable to access parent device of '/block/
sddlma01'
For a01 in the above examples, any alphanumeric character can be
output.
• When using an HDLM device as a boot disk in Red Hat Enterprise Linux 5,
if you install or uninstall a product that uses the weak-modules script, an
error might occur. For details, see B Troubleshooting Products That Use
the Weak-Modules Script on page B-1 .
Notes When Using SUSE LINUX Enterprise Server 9
Note the following when your OS is SUSE LINUX Enterprise Server 9:
• Before you update the kernel package, uninstall HDLM. After you have
updated the kernel package, re-install HDLM.
For details on HDLM installation and uninstallation, see
Installing HDLM on
page 3-75 and Uninstalling HDLM on page 3-216 .
HDLM Operation
4-5
Hitachi Dynamic Link Manager User Guide (for Linux(R))