VSAN-Troubleshooting-Reference-Manual
VSAN-Troubleshooting-Reference-Manual
VSAN-Troubleshooting-Reference-Manual
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Diagnostics and <strong>Troubleshooting</strong> <strong>Reference</strong> <strong>Manual</strong> – Virtual SAN<br />
Some clarity might be needed for the start parameter “--variance-threshold”. The<br />
description states "Configure the threshold, that only if disk's used capacity divided<br />
by disk capacity exceeds this threshold... "<br />
In fact, the trigger condition is only when the following calculation is greater than<br />
the :<br />
( / ) -<br />
( / )<br />
In other words, a disk is qualified for proactive rebalancing only if its fullness<br />
(used_capacity/disk_capacity) exceeds the fullness of the "least-full" disk in the<br />
vsan cluster by the threshold. The rebalancing process also needs to wait until the<br />
is met under this situation, and then start to try rebalancing.<br />
Here is an example of how to start and stop proactive component balancing via RVC:<br />
/ie-vcsa-06.ie.local/IE-<strong>VSAN</strong>-DC/computers> vsan.proactive_rebalance_info 0<br />
2014-12-11 14:14:27 +0000: Retrieving proactive rebalance information from host cs-ie-h02.ie.local ...<br />
2014-12-11 14:14:27 +0000: Retrieving proactive rebalance information from host cs-ie-h04.ie.local ...<br />
2014-12-11 14:14:27 +0000: Retrieving proactive rebalance information from host cs-ie-h01.ie.local ...<br />
2014-12-11 14:14:27 +0000: Retrieving proactive rebalance information from host cs-ie-h03.ie.local ...<br />
Proactive rebalance is not running!<br />
Max usage difference triggering rebalancing: 30.00%<br />
Average disk usage: 5.00%<br />
Maximum disk usage: 26.00% (21.00% above mean)<br />
Imbalance index: 5.00%<br />
No disk detected to be rebalanced<br />
/ie-vcsa-06.ie.local/IE-<strong>VSAN</strong>-DC/computers> vsan.proactive_rebalance -s 0<br />
2014-12-11 14:15:05 +0000: Processing Virtual SAN proactive rebalance on host cs-ie-h02.ie.local ...<br />
2014-12-11 14:15:05 +0000: Processing Virtual SAN proactive rebalance on host cs-ie-h04.ie.local ...<br />
2014-12-11 14:15:05 +0000: Processing Virtual SAN proactive rebalance on host cs-ie-h01.ie.local ...<br />
2014-12-11 14:15:05 +0000: Processing Virtual SAN proactive rebalance on host cs-ie-h03.ie.local ...<br />
Proactive rebalance has been started!<br />
/ie-vcsa-06.ie.local/IE-<strong>VSAN</strong>-DC/computers> vsan.proactive_rebalance_info 0<br />
2014-12-11 14:15:11 +0000: Retrieving proactive rebalance information from host cs-ie-h02.ie.local ...<br />
2014-12-11 14:15:11 +0000: Retrieving proactive rebalance information from host cs-ie-h01.ie.local ...<br />
2014-12-11 14:15:11 +0000: Retrieving proactive rebalance information from host cs-ie-h04.ie.local ...<br />
2014-12-11 14:15:11 +0000: Retrieving proactive rebalance information from host cs-ie-h03.ie.local ...<br />
Proactive rebalance start: 2014-12-11 14:13:10 UTC<br />
Proactive rebalance stop: 2014-12-12 14:16:17 UTC<br />
Max usage difference triggering rebalancing: 30.00%<br />
Average disk usage: 5.00%<br />
Maximum disk usage: 26.00% (21.00% above mean)<br />
Imbalance index: 5.00%<br />
No disk detected to be rebalanced<br />
/ie-vcsa-06.ie.local/IE-<strong>VSAN</strong>-DC/computers> vsan.proactive_rebalance -o 0<br />
2014-12-11 14:15:45 +0000: Processing Virtual SAN proactive rebalance on host cs-ie-h01.ie.local ...<br />
2014-12-11 14:15:45 +0000: Processing Virtual SAN proactive rebalance on host cs-ie-h02.ie.local ...<br />
2014-12-11 14:15:45 +0000: Processing Virtual SAN proactive rebalance on host cs-ie-h04.ie.local ...<br />
2014-12-11 14:15:45 +0000: Processing Virtual SAN proactive rebalance on host cs-ie-h03.ie.local ...<br />
Proactive rebalance has been stopped!<br />
/ie-vcsa-06.ie.local/IE-<strong>VSAN</strong>-DC/computers><br />
V M W A R E S T O R A G E B U D O C U M E N T A T I O N / 1 4 8
Change language