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

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11
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5answers
24k views

ZFS Beginner Setup with Different Size Drives

Sorry for the noobie questions, I've been Googling all sorts of walkthroughs to create my ZFS raid, but I can't seem to find the correct links for the answers I'm looking for. This is my first ...
1
vote
1answer
21 views

Adding a parity drive to a RAID-Z1 array

Can I create an array as a RAID-Z1 and then later add another pairity drive to make it into a RAID-Z2? I’ve got 4TB of data on a drive I’d like to add into an array that I’m building out of fresh ...
1
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1answer
38 views

managing zfs + mirroring

I've noticed that guides on zfs+redundancy+performance tend to emphasise mirroring as a good option, but zfs administration information tends to provide relatively little information on managing a ...
0
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1answer
26 views

ZFS writes a lot to my disk

I'm trying to figure out why my ZFS disks are written to so much. Using nmon and zfs iostat, I can see heavy writing activity (around 10M), but with iotop I see only a few bytes written. On this ...
1
vote
0answers
256 views

Ubuntu hangs at startup due to zfs

I installed zfs-on-linux to my virtual Ubuntu LTS server years ago via PPA. The system resides on a VMware Workstation 10 in Windows 8.1. The working ZFS/SPL versions installed are 0.6.3. It has ...
0
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1answer
19 views

Performance impact of SATA II over SATA III for ZFS?

I have a bunch of WD RE4 disks I got from a place that I worked. The drives are 3Gbps SATA II interface. I was going to use them in a server I am building for myself to act as a NAS / SAN for my ...
20
votes
8answers
61k views

Access a ZFS volume in Windows?

You'd think this would have been asked but I can't seem to find it so... Let's say I have a ZFS setup in this enclosure (8 bay USB3 JBOD): http://www.sansdigital.com/towerraid-/tr8uplusb.html Now, I'...
2
votes
1answer
1k views

Why isn't ZFS the default for fresh installs of FreeBSD?

(By the title, I'm sure this looks like an opinion question, but I'm actually looking for specific facts and materially, information to help me sort through some of the heavily in-favor-of-zfs ...
0
votes
1answer
200 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 ...
1
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0answers
100 views

ZFS not writing continuously to array

Preface: I'm by no means an expert Linux user, but I've played with Linux enough to be dangerous. I'm building a personal server, basically just to use as storage for video and photos. Current specs ...
1
vote
1answer
44 views

zpool import order in /dev/disk/by-id

If I have a disk: sdi, and there are three entries of it in /dev/disk/by-id: scsi-SATA_WDC_WD6001FSYZ-_WD-WXB1HB4SFS7W -> ../../sdi ata-WDC_WD6001FSYZ-01SS7B0_WD-WXB1HB4SFS7W -> ../../sdi wwn-...
0
votes
1answer
27 views

Weird speed measurement of ZFS over AFP file copy

I've been checking how fast is my ZFS storage server. I have some big files (>30 GB) and I've been using dd piped to /dev/null to check read speed. When running dd for a specific file for a first ...
3
votes
1answer
83 views

Can zfs/zpool be setup in an LVM formatted disk

I have Ubuntu 14.04 setup with LVM on a 500GB disk on my laptop. I want to setup/playaround with zfs/zpool. What is the best approach for this without losing my data
4
votes
2answers
10k views

FreeNAS: single-disk ZFS?

I have an older PC being re-purposed as a FreeNAS box for the household LAN. So far I've got FreeNAS installed to a USB thumb drive and a 500GB SATA drive for storage. I went and unmounted the hard ...
0
votes
0answers
123 views

testing ZFS - how to destroy an UNAVAIL pool without reboot

I am testing ZFSonLinux and i have an experimental pool named usbcka. There is only testing data. I am simulating HW failure to deterimine behaviour in this scenario. I know this setup has no ...
2
votes
1answer
79 views

Is a RAID1 (mirror) with 2 x 4TB drives and ZFS (through freenas) okay?

I'm looking to create a freenas RAID1 using two 4TB drives. It's going to be my primary location for a generic backup location (use rsnapshot for local files and keeping computer dd'd images) and I'...
1
vote
1answer
134 views

Which filesystem to use for hosting virtual machines?

Goal A reliable server configuration which serves as the off-site backup for several, distributed servers as well as hosting a few virtual machines. Each server's backups should be encrypted, ...
2
votes
2answers
134 views

What easy to manage file system to choose on Linux for homeserver?

I have a homeserver running on a HP Proliant Microserver Gen7 with 10GB of ECC Memory running Debian 8 (jessie). Right now i have one small system disk (backed up using rsnapshot) and 2x 3TB storage ...
0
votes
0answers
57 views

zfs send stream much bigger than predicted by “dry run”

Im running daily offsite backups of my ZFS system using incremental zfs send directed through ssh using buffer to buffer the stream and monitor its progress. I can estimate the size of the transfer ...
1
vote
1answer
74 views

ZFS as JBOD with removable drives?

Is it possible to set up a ZFS pool such that it looks something like JBOD but drives are removable from that pool? I have read that, with the usual ZFS configurations, this isn't possible. It seems ...
0
votes
1answer
459 views

What is the best way to setup separate FreeNAS jails/plugins using separate datasets?

I am running FreeNAS-9.3-STABLE-201512121950 from a USB stick in VirtualBox on a Mac Mini Server (late 2012 - Macmini6,2) running OS X El Capitan. Quad-core i7, 16G RAM, with 8G and 2 procs devoted ...
2
votes
0answers
74 views

Import zpool with one unknown missing vdev_children.

My raid-z zpool was in degraded mode, I have added a new disk in the zpool with the command: zpool add -f uhuru-test da3 The problem is that da3 have been accidentaly erased and now uhuru-test ...
0
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0answers
25 views

ZFS file system: Can I split data or compress files w/o formatting the disk? [closed]

Is ZFS file system able to split data or compress files without formatting any disk?
0
votes
1answer
104 views

zfs change device path

i have 2 zfs-fuse pools running on three external usb drives, since they are usb drives they will have different names when they are pluged in. zfs status -x is listing the pools and the devices as ...
0
votes
0answers
249 views

FreeNas single disk ZFS Pool Volume no longer mounts, HDD is 100% SMART ok, need help recovering data

I'm facing a huge issue with a small NAS i have at work. I've made the NAS a few months back as a test, but since then it's full of important data, a lot of which not backed up anywhere else. This ...
6
votes
1answer
433 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 ...
1
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1answer
1k views

FreeNAS planning - RAID controllers & expanding volumes

I'm considering building a FreeNAS box to replace a Synology DS1511 - mainly because I'd like it as a project with more flexibility. Couple questions: 1. Most people recommend a hardware RAID ...
0
votes
0answers
93 views

Grub2 support for ZFS

I have installed PCBSD on my machine with Ubuntu on it with the intension of dual booting. However, the grub install during the installation fails. I would like to set up a custom grub script to load ...
0
votes
1answer
4k views

How can I make Windows modify CIFS/ZFS ACLs 'correctly'

I have a FreeNAS (FreeBSD) system with a CIFS share (called "library") backed by a ZFS file system. The share is set up as per the FreeNAS GUI to use "Windows / Mac" ACLs which I'm led to believe ...
10
votes
3answers
1k views

How to make a redundant desktop system with daily snapshots? (Is btrfs ready for use?)

I want to configure a desktop system in which the home filesystem would be redundant (e.g. RAID-1), and would have weekly snapshots taken. I've already done this with ZFS, the snapshot system is ...
4
votes
3answers
757 views

Is RAID1 or similar needed for btrfs/ZFS to protect against bit rot?

I'm running a file server using Linux software raid, set up as raid6. As filesystem I've chosen btrfs. However, I'm not using btrfs own raid6 implementation as it's not very stable yet. So basically, ...
2
votes
2answers
541 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 ...
3
votes
1answer
426 views

How important is the 1GB RAM per 1TB disk space rule for ZFS?

I'm planning on building my first NAS box and currently I'm considering FreeNAS and ZFS for it. I read up on ZFS and it's feature set sounds interesting, although I will probably only use a fraction ...
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 ...
1
vote
0answers
129 views

Why does ZFS slow down making large files after 2.4 gig?

Zfs on linux, I'm making a large tar file, I'm watching it add to the file, and it goes very quickly, until it hits 2.4gig in size, then it just crawls, for hours. The same file on ext4 has no ...
1
vote
1answer
349 views

What is a ZFS legacy mount point?

I am trying to understand the way ZFS works when I do for example, a snapshot. When I use zfs list on machine I get some mount points and some paths. For example I get something like that: rpool/ROOT/...
0
votes
1answer
82 views

Does ZFS make sense as local storage?

I was reading about ZFS and for a moment thought of using it in my computer, but than reading about its memory requirements I thought twice. Does it make sense to use ZFS as local storage or this ...
1
vote
3answers
167 views

Is pushing zfs backup to tape for long term redundancy efficient?

Its quite expensive to move to tape, so for my setup, would it be efficient? Im looking for suggestions for efficiency towards either just building up my existing backup (SAN), and documenting it for ...
1
vote
2answers
484 views

ZFS Upgrade 2 mirrored drives to 3 drive raidz?

I have two 1GB drives configured as ZFS mirrors and now have the possibility to add a 3rd drive of 1GB. Can I reconfigure my mirror to a 3 drive raidz of (N-1)=2GB total capacity? I am running zfs-...
1
vote
1answer
235 views

Proper rsync flags for backuping from ext4 to ZFS

I have a home server running Ubuntu 14.04.3 LTS with an ext4 file system, to which I regularly backup data from various devices. Now I have set-up an external USB HDD with ZFS file system and would ...
1
vote
1answer
59 views

Can I reuse an overheated HDD after formatting in a ZFS RAID1?

I have a WD50EFRX which overheated according to SMART data (95 degrees celsius) and damaged some blocks (raw value of Raw Read Error Rate ~ 22000). There're no other values besides the Raw Read Error ...
4
votes
3answers
196 views

How to rollback a specific directory in ZFS snapshot?

Is it possible to rollback to a certain directory within a snapshot? For example, given the snapshot tank/home@snapshot_week_01 can I rollback to something like tank/home/louis@snapshot_week_01 ...
4
votes
1answer
5k views

zpool: pool I/O is currently suspended

I'm using ZFS on OSX and I've zpool which is active and online: NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT WD_1TB 931G 280G 651G 30% 1.00x ONLINE - but I can't ...
0
votes
0answers
51 views

OpenZFS ACLs on OSX

I mistakenly did a chmod ug+rwX rather than chmod ug=rwX and have now gained a host of ACLs on the folder and I cannot get rid of them. It is really screwing things up with shared use and rsync to NAS ...
0
votes
0answers
139 views

zfs on x86_64 on qemu on raspberry pi

I find when you try to ask for help for a bizarre problem, somebody inevitably tells you to solve your problem a different way, or they want to know what problem you REALLY want to solve, so here's my ...
0
votes
1answer
412 views

How to add an additional drive to an existing ZFS RAIDZ-1 in Proxmox?

I've a ZFS installation in Proxmox, in particular a RAIDZ-1 file system, for testing purposes (before going on production with this setup) I've added a new drive to the machine, but I'm blocked on ...
2
votes
3answers
889 views

Is there a benefit to having NAS with ECC memory and ZFS filesystem when I work on systems with neither?

Recently I've read some alarming stats on corruption rates in systems with non-ECC RAM and typical filesystems. From what I can Google, having a system with ECC RAM running ZFS is probably the best ...
1
vote
1answer
149 views

Does using zfs with (mirrored) usb drives have any drawbacks except speed?

I'm interested in using zfs with usb drives for storage on a linux desktop machine. I already have a lot of large external drives so this will be cheaper than buying new internal drives. I might have ...
2
votes
1answer
179 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)...
0
votes
1answer
87 views

Would a ZFS mirror with one drive mostly offline work?

Scenario: I have two external hard drives, and I'd like one to be a backup of the other. Traditionally, I would periodically connect the second drive and rsync across any changes. Does ZFS provide a ...