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

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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 ...
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31 views

what is the best practice for file server setup? [closed]

what is the best practice for file server setup ? I am planning to build a home file server that has 25 4T HHDs. I would like to have some suggestions for Hard ware configuration I am looking for ...
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15k 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 ...
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73 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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43 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 ...
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602 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 ...
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1answer
41 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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23 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 ...
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38 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 ...
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1k views

Change ZFS disk references to use GPTID instead of GEOM name?

I've built a FreeNAS rig on a sweet little HP ProLiant MicroServer. Storage wise, I've created a 3 disk ZFS pool using RAIDZ1. I started out with 3 small disks, while getting familiar with FreeNAS, ...
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100 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 ...
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1answer
97 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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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, ...
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1answer
47 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 ...
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103 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 ...
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2answers
2k views

4k hard drives freebsd gpart and zfs

I have 3 hdd, with the next camcotrol identify. root@cirmos:/root # camcontrol identify ada1 pass2: <WDC WD10EZEX-00RKKA0 80.00A80> ATA-8 SATA 3.x device pass2: 300.000MB/s transfers (SATA 2.x, ...
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21 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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63 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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44 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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24 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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30 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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282 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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96 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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1answer
2k views

hosting iscsi on smartos

I am trying to get back into the unix game for some storage projects we have got going. We would love to use joyents smartos (based on illumos) for that. Working with it is a real joy (setting up vms ...
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50 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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23 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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1answer
133 views

Is ZFS (filesystem) good for SDcards?

Ive reviewed all filesystems listed here: http://en.wikipedia.org/wiki/Comparison_of_file_systems I like ZFS the most out of all of filesystems listed there. But is it the best choice for ...
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216 views

ZFS vs existing filesystem for SD-card

I'm thinking that micro SD-cards, because of their high storage density, are probably especially susceptible to bit rot. So I thought I might give ZFS a try. (I'm open to alternatives..) However, I ...
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1answer
41 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, ...
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3k 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 ...
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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 ...
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43 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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48 views

ZFS cache when seeding torrent

I sometimes use my home server to seed a few torrents, almost always less than 4GB. The torrent data are on a ZFS volume and most of the time there is no other access to the disks. The server has 8GB ...
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40 views

GlusterFS: Different filesystems for bricks?

I'm currently working on a small cluster (~32 nodes) where a couple nodes (8 of them) have some extra disks (3x3TB) attached to them. The filesystem on all these nodes right now is ext4. Using ...
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56 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 ...
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188 views

ddrescue rates low (~20,000 kB/s) with ZFS content on a good drive, USB 3.0 limited to USB 2.0 with a 2009 MacBookPro5,2

I find a variety of questions in Stack Exchange concerning ddrescue data transfer rates. This question – involving part of a ZFS pool – may be exceptional. Briefly Four USB 3.0 Seagate hard disk ...
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2answers
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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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3answers
8k views

Automount ZFS zpool in Ubuntu 12.04

So, I've been told that ZFS for Linux has the ability to automatically mount a zpool on system startup in Ubuntu 12.04, but it doesn't work for me and I can't find any documentation on how to make it ...
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251 views

ZFS + dedup: copy many small files fast

I'm running a ZFS backup server (with deduplication) to backup websites and store them with retention. To do this, I transfer all files to the backup server during the first backup, and make a copy of ...
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1answer
263 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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What could be reasons for a file fitting into a ZFS pool at some point, but not the second time after being removed with rm?

My problem is really as simple as follows: I want to put a file into a ZFS dataset after having deleted it with the rm command (even verified with find /path/to/pool_root -name "*" because the ...
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34 views

Can I reuse an overheated HDD after formatting in a ZFS RAID0?

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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1answer
135 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 ...
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1answer
7k views

How to add a mirror-disk to my OpenSolaris?

I have a machine with two harddrives. I have installed OpenSolaris on one of them and now I want to add the other one as a mirror-drive in my zpool rpool. I guess I have to format the second disk ...
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2k views

ESXi 5.1 - OS choices for a File Server

This past black friday i put together a small box I intended to use for a soho VM lab. i5 processor B75M-D3H Gigabyte motherboard 16GB of RAM 1TB seagate constellation HD (SATA3) I want to run a ...
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102 views

How to increase I/O priority of a zpool scrub (at runtime/without reboot)?

The speed of the scrub is not exceeding 5 MB/s for the first half hour (according to zpool status 2. The pool reaches 140 MB/s maximal and 50 MB/s for > 30 minutes. Watching iotop I see that txg_sync ...
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498 views

Am I likely to encounter data loss when using ZFS send to copy a pool to a server without ECC memory?

I have an OmniOS file server with a ZFS raidz2 array that I want to back up to another machine over gigabit ethernet. The other machine is a Linux (Ubuntu 12.04) system with non-ecc RAM connected to a ...
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298 views

how to access ZFS UNIX command line

It seems to be super easy but I just can´t get into it! All I have is the ´cli´, well documented. But I can´t execute commands like zpool, zfs etc. How do I get there? Thanks
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1k views

How to recover zfs pool when root fs fails

I have a FreeBSD 8.0 amd64 box w/ 1 ATA drive for system and 4 SATA drives as a RAIDZ pool. The ATA drive isn't mirrored nor part of any pool, but also doesn't hold any valuable data. How can I ...
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Viewing ZFS Raid-z device after importing with 'zpool'

I'm having trouble viewing my 'Storage' ZFS raid array. I've successfully imported the drives in with zpool import Storage. zpool status Storage returns: pool: Storage state: ONLINE status: The ...