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4. HDLM Operation
333
even while the HDLM device is in use. Before doing so, perform the following
operations:
1.
Unmount any devices mounted on the HDLM device.
2.
Execute the
dlmcfgmgr -o
command to exclude the HDLM device from
management.
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
]: Cannot find sysfs device associated with /sys/
block/sddlma01
For
a01
in the above examples, any alphanumeric character can be output.
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.
4.1.3 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:
1.
Unmount any devices mounted on the HDLM device.
2.
Execute the
dlmcfgmgr -o
command to exclude the HDLM device from
management.
HDLM devices cannot be used to create an md device.
Summary of Contents for Dynamic Link Manager
Page 1: ...Hitachi Dynamic Link Manager Software User s Guide for Linux R 3000 3 F04 60 E ...
Page 4: ......
Page 16: ......
Page 154: ...3 Creating an HDLM Environment 130 Figure 3 1 Flow of HDLM Environment Setup ...
Page 162: ...3 Creating an HDLM Environment 138 ...
Page 309: ...3 Creating an HDLM Environment 285 Figure 3 33 Example of Creating an ext2 File System ...
Page 352: ......
Page 362: ...4 HDLM Operation 338 A Fibre Channel switch s zone setting is changed ...
Page 375: ...4 HDLM Operation 351 ...
Page 410: ......
Page 546: ......
Page 549: ...8 Messages 525 HDLM driver filter component HDLM alert driver HDLM management target ...
Page 590: ...8 Messages 566 dd dd Maintenance information hexadecimal number Action None ...
Page 594: ...8 Messages 570 aa aa Name of file where error was detected Action Reinstall an HDLM ...
Page 713: ...8 Messages 689 utility see 7 2 DLMgetras Utility for Collecting HDLM Error Information ...
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