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

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39 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 ...
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37 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, ...
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22 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 ...
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26 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 ...
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23 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?
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1answer
103 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 ...
0
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1answer
28 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 ...
1
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1answer
41 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 ...
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81 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
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1answer
294 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 ...
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39 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 ...
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2answers
193 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
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1answer
136 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 ...
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0answers
85 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 ...
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1answer
72 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 ...
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1answer
67 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 ...
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3answers
113 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 ...
0
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1answer
111 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 ...
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66 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 ...
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3answers
120 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 ...
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34 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 ...
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102 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
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1answer
238 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
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1answer
123 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 ...
0
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1answer
68 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 ...
0
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1answer
256 views

ZFS (RAID-Z1) or “hardware” (RAID 5) on Linux system?

I have never put together a RAID array before, but i think i understand the concepts behind most raid types from my reading. Ordering three 3TB drives (WD red) to use in a xeon e3-1231 v3, 16GB ...
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2answers
237 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 ...
0
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316 views

ZFS for file sharing between Ubuntu and OSX with auto mount

I want to use a ZFS volume to share files between Ubuntu and OSX on a dualboot configuration. At this point everything is working nicely except for the fact that I have to: zpool export MyPool ...
1
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1answer
51 views

Why can't I detach a mirrored device if enough replicas are available?

man zpool states that zpool detach Detaches device from a mirror. The operation is refused if there are no other valid replicas of the data. If device may be re-added to the pool later on then ...
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110 views

SSD's or HDD's in a LANcache?

I am building a LANcache for a lanparty that I'm organizing. We have about 80 visitors (pretty small LAN), but our uplink is limited to 100mb/s due to reasons and it's constantly saturated with game ...
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63 views

ZFS panic in debian

All my server's process relative to zfs are in 'D' state. Here is dmesg: [ 108.965838] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 [ 108.965993] IP: ...
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1answer
85 views

How can I get the ID of an online disk in a ZFS pool?

I rotate physical disks in and out of my mirrored ZFS zpool (using ZoL) to use for offsite backups; to help streamline the process I've been using udev rules to respond to the drives being swapped. ...
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69 views

Moving ZFS drives from RDM to VT-d

Last year I built a simple NAS box using a Napp-it vm on ESXi. I bought a server(ish) board, ECC RAM and 4 x 4TB drives to store the data. Since I'm new to sever building I mistook "Virtualization: ...
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1answer
78 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 ...
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205 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 ...
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854 views

FreeBSD - Samba4 ignoring ZFS ACLs

I have a server running PC-BSD (FreeBSD) 10 and purely ZFS storage. I have created a jail with Warden and installed Samba 4. I have provisioned a domain, using the options for ntvfs and rfc2307 as ...
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0answers
78 views

ZFS raidz1 or raid10 or both?

This might be a long post. I am currently building a new server to replace ESXi with SmartOS. I currently have 4 - 2TB drives of uncertain origin in a raid10. I believe 2 are greens and maybe a black ...
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25 views

zfs with heavy write off ssd

Planning a Gentoo Linux install. I have 2 each 128 Gb SATA SSD and 450 Gb SAS near-line 15krpm. I want to mirror each pair, but keep write heavy directories on SAS. Do I need to make two mirrored ...
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107 views

ZFS on Linux - is the .zfs special directory incompatible with find?

My ZFS pool has a number of datasets with snapshots that contain junk. I'm copying the valuable files to a new dataset so that I can then delete the snapshots. The basic approach I'm taking is to ...
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1answer
76 views

How to diagnose HDD spindown?

I have a machine with a zfs pool on three magnetic drives /dev/sda, /dev/sdb, /dev/sdd containing larger data and a SSD with ext4 on /dev/sdc containing the rest of system (including home directories, ...
0
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2answers
233 views

ZFS send/recieve over ssh on linux without allowing root login

I wish to replicate the file system storage/photos from source to destination without enabling ssh login as root. I've tried a number of different combinations such as: sudo zfs send -R ...
0
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1answer
87 views

Solaris ZFS Mirroring - is different stripe widths valid?

I have found many articles about using ZFS mirroring with different sized disks, and it appears to be possible to grow a mirror by using larger disks. Is it possible to consolidate a stripe onto ...
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1answer
66 views

Ubuntu Home Server Packetstorm

I have a home plex server that runs various pieces of software and fills various roles. It's running the latest Ubuntu with all the latest packages/updates. About every 10 days or so, it starts packet ...
2
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2answers
709 views

Any performance implications of LVM and ZFS snapshots over time?

Is it bad practice to take and keep LVM or ZFS snapshots over the long-term as backups or archives? I agree snapshots are no substitute for making a second (or third) copy to take off-site, for ...
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1answer
491 views

Beginner Backing up ZFS Storage Pools

I'm considering moving my personal home data to ZFS on a Debian PC to take advantage of ZFS features such as data integrity and checksums, deduplication, and snapshots. The box has to be more than ...
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1answer
56 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 ...
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2answers
20 views

How to recognize the start and end of a zpool partition on byte/HDD block level or with broken GPT?

In case the GPT of a HDD has been deleted and possibly some partitons, but not the one that should be found with the answer to this question (because it is right in the middle of the HDD and writing ...
0
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1answer
347 views

ZFS and mixed drives sizes for a mirrored stripe array

I'm having a performance problem with my ZFS array that i think to be due to defragmentation. I have a striped array of 20 devices with 2 mirrored drives each. I've recently added some devices to this ...
0
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1answer
39 views

How to access files on a zfs pool of which only the vdev is left?

I set up a zfs pool mypool with one sparse file as vdev. After a system crash only the undamaged vdev is left. Is there any chance to get files and folders out of it? I don't care to create another ...
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2answers
48 views

What is a better approach for ZFS?

I am making zpools on FreeBSD machine. While creating zpools I observe these two cases:- If I take raw disks and create zpool then I am able to form zpools and they are working perfectly. If I ...