→ Applies to: SynetoOS 5.x

Symptom

When attempting to perform the "Convert to Original" operation, an error may occur with the message "Dataset is busy" because a system process is still using the virtual disk.

Solution

Step 1. Connect to SynetoOS appliance via SSH as admin

ssh admin@<your_ip_address_or_hostname>

Step 2. Become Super User

sudo su

Step 3. Identify the loop device

losetup -a

EXAMPLE OUTPUT

/dev/loop0: [2097407]:4 (/flash/syn-volumes/3758361c-d1ae-4ce3-9197-581c9ebf9981/.zfs/snapshot/auto:monthly-policy-Platinum-2024-01-23-15:39:02/SRVTEST/SRVTEST-flat.vmdk)

IMPORTANT
Save the identified loop device, in this case: /dev/loop0

Step 4. Identify the mount point

mount | grep loop0

EXAMPLE OUTPUT

/dev/mapper/loop0p3 on /mnt/virtual-disk-browser/files/37d6ff0b-ee57-4f3e-9725-0d649febbd7c type fuseblk (ro,relatime,user_id=0,group_id=0,allow_other,blksize=4096)

IMPORTANT
Save the identified mount point, in this case: /mnt/virtual-disk-browser/files/37d6ff0b-ee57-4f3e-9725-0d649febbd7c

Step 5. Unmount the mount point (replace <mount_point_path> with the mount point from Step 4)

umount <mount_point_path>

EXAMPLE

umount /mnt/virtual-disk-browser/files/37d6ff0b-ee57-4f3e-9725-0d649febbd7c

Step 6. Delete the partition device mappings for the loop device (replace <loop_device> with the loop device from Step 3)

kpartx -d <loop_device>

EXAMPLE

kpartx -d /dev/loop0

Step 7. Detach the loop device from the physical file (replace <loop_device> with the loop device from Step 3)

losetup -d <loop_device>

EXAMPLE

losetup -d /dev/loop0