An advanced file system that can span multiple disks, heal itself from data corruption, deduplicate data, encrypt, etc.

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9
votes
4answers
14k views

Start a ZFS RAIDZ zpool with two discs then add a third?

Let's say I have two 2TB HDDs and I want to start my first ZFS zpool. Is it possible to create a RAIDZ with just those two discs, giving me 2TB of usable storage (if I understand it right) and then ...
4
votes
3answers
2k views

RAID5 / RAIDZ - is it possible to enlarge without losing data?

If I have a RAID5 with 4x1TB drives, and then in, say, a year I decide to upgrade to 4x2TB, can I swap out one drive at a time, then let the parity rebuild, even if it's mixed-size drives? Obviously ...
6
votes
7answers
8k views

Setting up a home server - what to use? (ZFS vs btrfs, BSD vs Linux, misc other requirements)

I need to get all our home content off individual machines and onto a central server. What I'd like to have is the metaphorical "server under the stairs". Stuff we need: expandable storage. I ...
2
votes
2answers
539 views

zpool import with missing cache device

Was going to try SmartOS, partially because I was not satisfied with FreeNAS for my usage. Created new zpool on old cache drive for SmartOS zones. That was all just backstory. The point is that now ...
6
votes
1answer
432 views

Will FreeNAS/ZFS let me manage my storage this way

I'm considering FreeNAS; and want to confirm that my understanding of what I can/can't do with storage in it is correct beforehand. Initial build out: 1 storage pool with 2 x 6TB drives mirroring ...
3
votes
1answer
405 views

Growing a ZFS pool from populated ext4 disks

I've got an Ubuntu media server with 4 ext4 2TB drives, 1 ext4 4TB drive, and 1 new blank 4TB drive. The ext4 volumes are configured as individual drives (not RAID, etc.). The 2TB drives are about 70%...
2
votes
1answer
4k views

dkms does not find kernel source

For days now I am trying to get ZFS-on-Linux working on Debian 7 but the module doesn't want to compile: # dpkg-reconfigure zfs-dkms ------------------------------ Deleting module version: 0.6.3 ...
1
vote
1answer
734 views

Handling whitespaces in the name of a ZFS dataset in a shell script

I'd like to take output from two commands – zpool list zfs list and for each found pool: zpool get all nameofpool and for each found file system: zfs get all nameoffilesystem Background and ...
2
votes
1answer
177 views

ZFS dataset restoring

I have suddenly removed my ZFS dataset from ZFS pool. I do this from GUI of Nas4Free. In logs it was command something like "ZFS destroy Main/Video". Then i recreate dataset with same name (Main/Video)...
1
vote
1answer
153 views

Restore ZFS pool after creating over it

I reinstalled my Ubuntu 14.04 system and tried to mount my existing zfs drive. It's a single drive with all data on it. The OS is on a different drive, the zfs drive only holds data. The pool name is ...
0
votes
1answer
198 views

How many drives do I need for ZFS RAID-Z2?

How much storage would I need if I wanted to use RAID-Z2? I am building a home server that will run FreeNAS with a ZFS file system, and currently plan to install 3 3TB hard drives. Does RAID-Z2 ...