On 02/27/2014 09:43 AM, Jiri Denemark wrote:
Libvirt uses a domain name to fill in owner_name in sanlock_options in virLockManagerSanlockAcquire. Unfortunately, owner_name is limited to SANLK_NAME_LEN characters (including trailing '\0'), which means domains with longer names fail to start when sanlock is enabled. However, we can truncate the name when setting owner_name as explained by sanlock's author:
Setting sanlk_options or the owner_name is unnecessary, and has very little to no benefit. If you do provide something in owner_name, it can be anything, sanlock doesn't care or use it.
If you run the command "sanlock status", the output will display a list of clients connected to the sanlock daemon. This client list is displayed as "pid owner_name" if the client has provided an owner_name via sanlk_options. This debugging output is the only usage of owner_name, so its only benefit is to potentially provide a more human friendly output for debugging purposes.
It might be nice to add a link the bug: https://bugzilla.redhat.com/show_bug.cgi?id=1060557 Jan