VMware: vSAN Disk Group Cache Drive Dead or Error (VSAN Absent Disk)
Summary:
A cache disk failed in my host taking along with it the disk group. This is expected behavior, but for some reason, the disk group also disappeared from GUI so I couldn't decommission the disk group to basically replace the cached drive. So, had to do it through powercli/esxcli. Wish I took a screenshot, cause it was kind of annoying.
PowerCLI Example:
Once you've deleted the offending disk group, you can now create a new disk group utilizing the replaced cache disk and former capacity disks.
A cache disk failed in my host taking along with it the disk group. This is expected behavior, but for some reason, the disk group also disappeared from GUI so I couldn't decommission the disk group to basically replace the cached drive. So, had to do it through powercli/esxcli. Wish I took a screenshot, cause it was kind of annoying.
PowerCLI Example:
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<# | |
Author: K. Chris Nakagaki | |
Source: tech.zsoldier.com | |
Use at your own risk, simply listed here for demonstration purposes to use how you see fit. | |
#> | |
<# Get the host w/ problem disk group #> | |
$VMhost = Get-VMHost NameofHostwithProblemDiskGroup | |
<# ESXCLI Connection #> | |
$VMHostCLI = $VMHost | Get-ESXCLI -V2 | |
<# Find your problem disk group UUID, in this case I'm looking for a disk group that doesn't exist (blank) #> | |
$BadDisks = $VMHostcli.vsan.storage.list.invoke() | Where-Object {$_.vsandiskgroupname -eq ""} | |
<# Your capacity disks should all have the same vSAN Disk Group UUID, we're just confirming it here. #> | |
$BadDiskGroup = $BadDisks | Select-Object -Unique -Property vsandiskgroupuuid | |
<# This should return only one assuming you only have one bad disk group, if more than one, then you might have more issues. #> | |
$BadDiskGroup | |
<# Below is destructive, only do it if you are ABSOLUTELY sure of what you are doing #> | |
$vmhostcli.vsan.storage.remove.invoke(@{"uuid"=$BadDiskGroup}) | |
Once you've deleted the offending disk group, you can now create a new disk group utilizing the replaced cache disk and former capacity disks.
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