Esxcli Storage Vmfs Unmap Status

Unmap granularity equals the block size which is 1 mb. The way automatic unmap works is that all esxi 6 5 hosts that see the vmfs 6 datastore participate in the unmap process. Specify granularity for the unmap operation.

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The block size on a vmfs datastore defines the maximum file size and the amount of space the file occupies.

Esxcli storage vmfs unmap status. Monitoring vaai unmap commands via esxtop can be done by establishing a remote ssh session to your vmware esxi host typing in esxtop and pressing the following keys. So let s say you bring three vmfs5 datastores up to near capacity but then you free up 30 on each datastore. Root macm esxcli storage vmfs unmap l datastore1 that took about 2 3 minutes to complete and in the logs i saw the following. They have crawlers that will run unmap to the various datastores intermittently.

They will issue it to the dead space and dead space only. Open a putty session to an esxi host and execute the esxcli storage vmfs unmap l datastore name i had to cut off the datastore name this command will take sometime to complete the operation and it depend on the size of the datastore. Root esxi esxcli storage core device vaai status get d naa 6006016094602800e07ff528b73ae011 naa 6006016094602800e07ff528b73ae011 vaai plugin name. L volume label volume label if this is displayed the next argument 2 is not worth using.

Vmfs6 supports the block size of 1 mb. Root macm esxcli storage core device vaai status get d naa 600144f070cc4400 naa 600144f070cc44000 vaai plugin name. The next thing is is your host s enabled to participate in automatic unmap. Storage sectors of the size smaller than 1 mb are not reclaimed.

Do you get that space back on your san automatically. By default the space reservation for the temporary files depends on the block size of the underlying vmfs file system the default is reclaim unit 200. Esxcli vmfs storage reclamation with unmap command typically when you provision your datastores for vmware you will thin provision them. When performing a esxi unmap from the esx cli you get the following error.

U for disk view f for fields. Esxcli storage vmfs unmap volume label volume label volume uuid volume uuid reclaim unit number note the components of this command. Supported delete status. Similar to the previous vmkfstools y method the esxcli storage vmfs unmap command creates temporary hidden files at the top level of the datastore but with names using the asyncunmapfile pattern.