How do I resize ZVOL?
How do I resize ZVOL?
Right click on the Primary partition (zvol) to drop down a list and click on Extend Volume.
Can you expand a ZVOL?
In ZFS, there are two types of filesystems (datasets and zvol). The ZFS dataset can be grown by setting the quota and reservation properties. But zvols have to extend by setting the volsize property to a new size.
What is ZVOL in Truenas?
A ZFS Volume (Zvol) is a dataset that represents a block device. These are needed when configuring an iSCSI Share. To create a zvol in a pool, go to Storage > Pools then click and Add Zvol.
How do I resize ZFS volume?
You have to go through the following awkward steps:
- Disable swap.
- Delete swap partition.
- Resize the ufs partition, making sure you don’t use the entire space.
- Create a new freebsd-swap partition.
- Enable swap again.
What is the difference between ZVOL and dataset?
A zvol is block storage, while datasets are file-based. The name of the system is FreeNAS. It is capitalized that way because it stands for Free Network Attached Storage.
What is dataset and ZVOL?
zvol– These are a bit different that a dataset. If you were to think of a dataset as a NAS-type device (i.e. file-based), then the zvol is more of a SAN-type device (block base). If you want to carve out a chunk of storage and present it over iSCSI, you would use a zvol.
Can you shrink ZFS?
zfsadm shrink reduces the physical size of a zFS aggregate. The aggregate must be mounted before it can be shrunk. The zfsadm shrink command releases unused space from the aggregate data set so that the resulting physical size of the data set is approximately the new total size that was requested by the -size option.
How do I shrink a ZFS file system?
1. add a temp disk/file vdev to the pool with smaller size, but is enough to hold all existing data (including snapshots etc) 2. remove the old vdev 3. possibly re-partition old vdev to smaller size, or replace with a smaller disk 4.
What is ZFS deduplication?
The deduplication feature of the ZFS filesystem is a way of removing redundant data from ZFS pools/filesystems. Simply put, if you store a lot of files on your ZFS pool/filesystem, and some of these files are the same, only one copy of these files would be kept on the ZFS pool/filesystem.