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VMware shows inaccurate space compared to storage when using thin provisioning

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Votes:
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Category:
ontap-9
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san
Last Updated:

Applies to

  • ONTAP  9.x and above
  • VMware ESXi
  • THIN provisioned LUNs

Issue

  • VMware Datastore shows the correct size and usage but NetApp shows incorrect LUN free space.
  • Deleting files or VMs on VMware does not return space to the LUN or volume, and the space shows as full.
  • Lun shows full in the ASUP as per df Log-

df output-
/vol/vol1/lun1   8847884288 8847884288          0     100%  /vol/vol1/

  • EMS reports events related to insufficient space and lun offline events-

Sun Jul 21 01:45:21 +0800 [NetApp-01: wafl_exempt13: wafl.vol.full:alert]: Insufficient space on volume volnetapp@vserver:22b8374a-013d-11ef-a3bd-xxxxxxxxx to perform operation. 68.0KB was requested but only 1.00KB was available.
Sun Jul 21 05:31:59 +0800 [NetApp-01: VdomFSMThr_06: LUN.out.of.space:EMERGENCY]: LUN /vol/vol1/lun1, vol vol1 (DSID 10xx) is out of space (UUID: f53f44f5-b2b2-4b7d-9d8e-595e128xxxx).
Sun Jul 21 05:39:40 +0800 [NetApp-01: wafl_spcd_main: monitor.volumes.one.ok:debug]: Volume volnetapp@vserver:22b8374a-013d-11ef-a3bd-xxxxxxxxx is OK.
Sun Jul 21 05:39:43 +0800 [NetApp-01: VdomFSMThr_08: LUN.online:notice]: LUN /vol/vol1/lun1, vol volnetapp (DSID 10xx) was brought online (UUID: f53f44f5-b2b2-4b7d-9d8e-xxxxxxxxxxxx).
Sun Jul 21 05:49:43 +0800 [NetApp-01: wafl_exempt01: wafl.spacemgmnt.policyChg:notice]: The space management policy for volume volnetapp has changed: autosize volume maximum size 322122547200KB.
Sun Jul 21 05:49:43 +0800 [NetApp-01: wafl_exempt15: wafl.spacemgmnt.policyChg:notice]: The space management policy for volume volnetapp has changed: autosize state enabled.
Sun Jul 21 05:49:44 +0800 [NetApp-01: wafl_exempt01: wafl.inode.fill.disable:debug]: fill reservation disabled for inode 96 (vol volnetapp).
Sun Jul 21 05:49:53 +0800 [NetApp-01: VdomFSMThr_03: LUN.offline:notice]: LUN /vol/vol1/lun1, vol volnetapp (DSID 10xx) was brought offline (UUID: f53f44f5-b2b2-4b7d-9d8e-595e12885c6b).'
Sun Jul 21 05:50:00 +0800 [NetApp-01: VdomFSMThr_12: LUN.online:notice]: LUN /vol/vol1/lun1, vol volnetapp (DSID 10xx) was brought online (UUID: f53f44f5-b2b2-4b7d-9d8e-595e128xxxx).

 

 

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