terminal could not unmount disk resource busy

All VMs have been migrated off, the datastore is not used for heartbeat, vsantraced is disabled, SIOC is disabled, it is not apart of a datastore cluster, and the coredumps have all been cleared. Correct the problem and retry the operation.īut there are not anything on the datastore in use. The error that is occurring indicates that the file system is busy.Ĭannot unmount volume 'Datastore Name: Hosted_FC_LUN70 VMFS uuid: 5202965c-e09a124d-9e1b-001a64c85540' because file system is busy. It is not always the same 3 hosts it varies. So we are sVmotioning VMs off some datastores then deleting the LUNs.įor every datastore we are cleaning up there about 3 out of 16 hosts won't unmount the datastore. You can do this in MAC’s Disk utility by selecting the volume and clicking unmount.Īlso, in case it’s not obvious, you usually need a destination disk of equal or greater size.We are going through doing some cleanup on our datastores. If you get an error about ‘Resource Busy’, then you need to unmount the usb volume without ejecting the disk. You should now have an exact copy of the original USB. Next you run the command ‘dd if=source of=target conv=notrunc’ *** MAKE SURE you know which disk is the original ***ĭouble check it too, because if you don’t specify the correct source and target, you can easily wipe your data disk. You could also plug in 1 usb, run the command, then the 2nd and run it again to be sure you identify the disks correctly. The original is 8Gb and the new, blank one is 16Gb. Here you see my hard drive as disk0, and the 2 usbs as disk1 and disk2. So launch a terminal and start by listing the disks with the command ‘diskutil list’:Ģ: Apple_HFS Macintosh HD 159.2 GB disk0s2ģ: Apple_Boot Recovery HD 650.0 MB disk0s3Ģ: Apple_HFS Mac OS X Install 7.7 GB disk2s2 This process will work in both MAC and Linux. So I was going to use dd to copy the disk. I could have gone through the usual procedure from Apple for creating a USB installer but I wanted something easier since I already had a USB installer for Mountain Lion. I was asked to create a new USB installer for Mountain Lion for one of our techs.

Terminal could not unmount disk resource busy