Recovering data from previous FreeNAS Bhyve ZVOLs?

[victorhooi]

Hi,

I have a machine running FreeNAS 11.2-U3.

I have a 6-drive ZFS pool on the machine.

I previously had some Bhyve instances setup on this machine - however, I can't see them now, so I suspect at some point I had to reinstall FreeNAS and I'm simply re-imported the ZFS pool.

When I do "zfs list", I see two lines ("freenas-torrent-manual and freenas-torrent-ne8r4s) which I believe are the zvols associated with those Bhyve VMs:

Code:

datastore-naulty-place/documents                                         7.13T  6.60T  7.13T  /mnt/datastore-naulty-place/documents
datastore-naulty-place/freenas-torrent-manual                             581G  6.90T   272G  -
datastore-naulty-place/freenas-torrent-ne8r4s                            1.33T  6.65T  1.29T  -
datastore-naulty-place/iocage                                            4.49M  6.60T  3.65M  /mnt/datastore-naulty-place/iocage
datastore-naulty-place/iocage/download                                    141K  6.60T   141K  /mnt/datastore-naulty-place/iocage/download
datastore-naulty-place/iocage/images                                      141K  6.60T   141K  /mnt/datastore-naulty-place/iocage/images
datastore-naulty-place/iocage/jails                                       141K  6.60T   141K  /mnt/datastore-naulty-place/iocage/jails
datastore-naulty-place/iocage/log                                         141K  6.60T   141K  /mnt/datastore-naulty-place/iocage/log
datastore-naulty-place/iocage/releases                                    141K  6.60T   141K  /mnt/datastore-naulty-place/iocage/releases
datastore-naulty-place/iocage/templates                                   141K  6.60T   141K  /mnt/datastore-naulty-place/iocage/templates
datastore-naulty-place/photos                                             310G  6.60T   310G  /mnt/datastore-naulty-place/photos
datastore-naulty-place/software                                           798M  6.60T   798M  /mnt/datastore-naulty-place/software
datastore-naulty-place/synology                                          5.58T  6.60T  5.58T  /mnt/datastore-naulty-place/synology
datastore-naulty-place/videos                                             419G  6.60T   419G  /mnt/datastore-naulty-place/videos

From memory, they should be running Ubuntu 18.10.

Firstly - is there some way I can confirm from the above that these are indeed ZVOLs, and that they are Bhyve VM disks?

Secondly, is there some way I can re-create a new Bhyve instance to use those disks, or even just read data from those disks to recover it?

Thanks,
Victor

 

[KrisBee]

Three ways to list your zvols:

zfs list -t volume
zfs get type | grep volume
ls -l /dev/zvol/datastore-naulty-place/*

Use the wizard to create a new Bhyve VM choosing your existing zvol. You could either boot the VM from an Ubuntu ISO in rescue mode, or boot it directly. It doesn't seem like a good idea to have large amounts of data only available inside a VM. Have the VM mount a dataset on your pool via NFS or SMB, and store your data on your pool.