[VCL-1060] VMware.pm generates warnings and critical message when checking for multiextent support under ESXi 6.5

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.2
• Fix Version/s: 2.5
• Component/s: vcld (backend)
• Assignee: Andrew Kurth
• Reporter: Andrew Kurth
• Created: 19/Jul/17 17:17
• Updated: 21/Jul/17 19:08
• Resolved: 19/Jul/17 18:05

Description

Multiextent support seems to be back by default with ESXi 6.5. The checks done in VMware.pm::check_multiextent are generating warnings and a critical message:

VMware.pm:check_multiextent|6804| ---- WARNING ----
VMware.pm:check_multiextent|6804| 2017-07-19 13:13:12VMware.pm:check_multiextent|6804|failed to load multiextent kernel module on vmhost1, exit status: 1, output:
VMware.pm:check_multiextent|6804| VMKMod_ComputeModPath(multiextent) failed: Not found
VMware.pm:check_multiextent|6804| vmkload_mod: Can not load module multiextent: not found
VMware.pm:check_multiextent|6804| ( 0) VMware.pm, check_multiextent (line: 6804)
VMware.pm:check_multiextent|6804| (-1) test.pm, process (line: 96)
VMware.pm:check_multiextent|6804| (-2) vcld, make_new_child (line: 601)
VMware.pm:check_multiextent|6804| (-3) vcld, main (line: 353)

VMware.pm:check_multiextent|6807| ---- CRITICAL ----
VMware.pm:check_multiextent|6807| 2017-07-19 13:13:12VMware.pm:check_multiextent|6807|multiextent kernel module is disabled on VM host vmhost1, operations on 2GB sparse virtual disk files will fail
VMware.pm:check_multiextent|6807| ****************************************************************************************************
VMware.pm:check_multiextent|6807| DO THE FOLLOWING TO FIX THIS PROBLEM:
VMware.pm:check_multiextent|6807| Enable the module by running the following command on each VMware host: 'vmkload_mod -u multiextent'
VMware.pm:check_multiextent|6807| Add a line containing 'vmkload_mod -u multiextent' to /etc/rc.local.d/local.sh on each ESXi host
VMware.pm:check_multiextent|6807| ****************************************************************************************************
VMware.pm:check_multiextent|6807| ( 0) VMware.pm, check_multiextent (line: 6807)
VMware.pm:check_multiextent|6807| (-1) test.pm, process (line: 96)
VMware.pm:check_multiextent|6807| (-2) vcld, make_new_child (line: 601)
VMware.pm:check_multiextent|6807| (-3) vcld, main (line: 353)

The version should be checked in the subroutine and the checks bypassed if >= 6.5.