SIOS TECHNOLOGY CORP.

DRBD Recovery Kit Known Issues / Restrictions

Description
The lkcli command for DRBD does not support export/import.
lkbackup will not backup resource files if there are more than one set of resource files.

lkbackup will not backup DRBD resource files when there are more than one set of resource files (one set is defined as lk#.res and lk#.res.db). If there is only one set of files then they will be properly backed up. The workaround is to manually save all resource files.
DRBD: Unable to change DRBD connection endpoint IPs using lk_chg_value.

While the IP addresses used by some LifeKeeper recovery kits can be updated by using the /opt/LifeKeeper/bin/lk_chg_value script (see, for example, Changing the Data Replication Path (DataKeeper), Changing the IP for the Queue Manager (IBM MQ), and Changing LifeKeeper Configuration Values), this script cannot currently be used to modify IP addresses used by DRBD resources.

Executing commands similar to the following:

# lkstop
# /opt/LifeKeeper/bin/lk_chg_value -o 182.168.0.1 -n 192.168.1.1
# lkstart

will modify the IP addresses used by LifeKeeper communication paths on the system. However, this will not update the IP addresses in DRBD configuration files. Usage of LifeKeeper to update the connection endpoints for a DRBD resource is currently not supported.
DRBD does not fully resync after unextend/reextend

If a DRBD resource is unextended and then extended again a full resync is required. If the full resync is not automatically performed take the DRBD resource out-of-service and then back in-service on the same node where it was in-service. This should cause any outstanding out-of-sync blocks to be replicated.

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