An advanced file system that can span multiple disks, heal itself from data corruption, deduplicate data, encrypt, etc.
2
votes
0answers
22 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, ...
0
votes
1answer
36 views
Replacing a disk with ZFS
I've been using ZFS for a RAID on my mac for the past few months and a few days ago one of the disks died. The computer didn't recognize it anymore, it shut off seconds after being turned on and made ...
11
votes
7answers
18k 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, ...
0
votes
1answer
476 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 ...
0
votes
1answer
108 views
Migrate FreeBSD ZFS to Ubuntu
I have a HP microserver running FreeBSD 9.1 on a 3-disks RAID-Z pool, and uses this pool as root.
Now I would like to replace FreeBSD with Ubuntu server (because I am more familiar with Ubuntu/deb). ...
6
votes
1answer
289 views
Formula to calculate probability of unrecoverable read error during RAID rebuild
I need to compare the reliability of different RAID systems with either consumer or enterprise drives. The formula to have the probability of success of a rebuild, ignoring mechanical problems, is ...
2
votes
1answer
130 views
Why is ZFS gzip-9 compression so much worse than actually using zip files?
I am working with some very large packet capture files (~150GB across 30 files) but because of how highly redundant packet captures are, these compress to ~7% (14.29x) of their originally file size ...
1
vote
3answers
394 views
ZFS (on Linux)'s memory requirement for a non-fileserver computer
A lot of material on ZFS mentions that basically the more memory you can throw at it, the better. However, I plan to use ZFS on a notebook with 16GB of RAM -- while that should be enough for ZFS, I ...
1
vote
1answer
158 views
Improving small-file-performance for ZFS On Linux
I used mdadm (RAID 5) and ext4 before, I switched to ZFS On Linux (raidz) because of many reason. But when I working with small files, the performance is terrible. Only 7 MiB/s!?
How do I improved ...
0
votes
1answer
264 views
ZPOOL how to remove volume?
I had a strange issue with FreeNAS reporting mulitpath/disk1 is not stable for a while with a crcck of 5. I do not have any SAS on my MB. The rest all report as ada_ except that drive. In multipath ...
2
votes
1answer
686 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 ...
0
votes
0answers
94 views
FreeNAS 8 and ext fs
i'm trying out freenas8 for my personal NAS, i have lots of data that was in an ubuntu server, but somehow i never got the file sharing right. on freenas things just worked. i installed on usb, tried ...
1
vote
1answer
184 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 ...
1
vote
1answer
420 views
Best way to mount a remote ZFS share in Windows and make it appear local, or close to local
I primarily use Linux and Mac, where sharing folders and block devices is easy and just works. I have a 38TB ZFS-backed Ubuntu fileserver that pretty much stores all of my data for all of my devices.
...
1
vote
1answer
479 views
View ZFS deduplication ratio on a dataset
I have a tank consisting of several datasets, only one of which is configured to use deduplication.
How can I see the ratio for this dataset? I get a ratio of 1.00x for the whole pool but I imagine ...
2
votes
3answers
2k views
Choice of an OS for a home ZFS NAS
I am preparing a home NAS with an old Athlon 64 X2 3800+, 4 GB ECC RAM, Asus M2V MX motherboard, and a single 3 TB WDC Green (another one as mirror may be installed in the future). It's the cheapest ...
0
votes
1answer
113 views
Using ZFS with little RAM?
I have an Acer EasyStore with a RAID5 mdraid array I use for storing my home files (photos, movies, etc), and I want to migrate it to ZFS with Ubuntu (the native kernel module from zfsonlinux.org).
I ...
2
votes
1answer
43 views
Blacklist filename on FreeBSD ZFS
I have a ZFS based NAS that various platforms use for shared storage, namely Windows XP/7/8 and Linux.
I've noticed that Windows clients are creating Thumbs.db files left right and centre, which I do ...
1
vote
1answer
515 views
Where is my VMware-ws FreeNAS CIFS(ZFS) bottle-neck?
Background: I'm building a quiet HTPC + NAS that is also supposed to be used for general computer usage. I'm so far generally happy with things, it was just that I was expecting a little better IO ...
3
votes
1answer
92 views
Unmounting a zfs pool while it is shared with sharenfs
I have a Solaris (open indiana) system which is getting poor disk write performance. In order to enable ZIL in this version of zfs I need to add a line to /etc/system. This will not take affect until ...
4
votes
2answers
225 views
What free space thresholds/limits are advisable for 640 GB and 2 TB hard disk drives with ZEVO ZFS on OS X?
Assuming that free space advice for ZEVO will not differ from advice for other modern implementations of ZFS …
Question
Please, what percentages or amounts of free space are advisable for hard disk ...
0
votes
0answers
72 views
Can a ZFS on “raw” disks convert to ZFS-only boot?
I'm upgrading a system from FreeBSD 7.2 to 9-STABLE. My existing system boots via MBR to UFS on ad5. ad5s1a is /bootdir (which is symlinked from /boot -> /bootdir/boot). The loader.conf sets ...
2
votes
1answer
185 views
ZFS compressed and deduped filesystem on file
I can create squashed filesystems with mksquashfs in this way:
mksquashfs dir-1 dir-2 ... dir-n filesystem-on-file.squash -comp xz -Xbcj x86 -Xdict-size 1048576 -b 1024k
mksquashfs provides ...
2
votes
3answers
918 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 ...
3
votes
1answer
163 views
Can two seperate zpools exist on the same physical devices?
Short: Can I share a disk between two separate zpools?
Long: I want a raidz2 array but I can't afford it all at once. My possible solution is to start with two drives. I would create a mirror using ...
1
vote
1answer
129 views
ZFS & Deduplicating FLAC Data
I'm experimenting with using ZFS to deduplicate a large library of FLAC files. The purpose of this is twofold:
Reduce storage utilization
Reduce bandwidth needed to sync the library with cloud ...
0
votes
1answer
483 views
using ZFS on an external USB drive for backup in Ubuntu
I run Ubuntu 12.04 precise and would like to format, using ZFS, an external USB HDD to use it as a backup drive for my home directories.
Since it's just one drive I am not interested in self-healing ...
1
vote
1answer
94 views
Limit the amount of data that can be stored in a folder on Ubuntu Server 12.04?
I'm in the process of building my first server. It's up, it's running, I'm transferring copious amounts of data away from my horrid little Drobo (DO NOT BUY ONE OF THESE, EVER).
However, there's one ...
1
vote
3answers
398 views
which ZFS-like filesystem can optimize volume selection based on file access patterns?
Is there a redundant RAID/ZFS-like filesystem that can optimize the placement of files based on their access patterns? My goal is to build a desktop system that will automatically move files among a ...
4
votes
1answer
3k 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
1answer
336 views
Can't complete a SMART test on FreeNAS
I'm trying to run a disk test with smartctl -t long on FreeNAS.
But the test immediately aborts with Aborted by host.
From what I've read, this is because the system is using the drive, so it cannot ...
1
vote
2answers
3k 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 ...
5
votes
3answers
5k 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 ...
1
vote
2answers
214 views
Do I need differential backups in ZFS?
I am considering migrating from (debian + mirrored raid + daily differential backups + weekly full backups) to ZFS raidz. Is there any point of performing backups in ZFS the same way as my current ...
4
votes
1answer
6k views
NAS - ZFS system versus NTFS or EXT4 system
I was contemplating purchasing a QNAP 459-II for my home storage/streaming needs and a friend advised me that I should look into ZFS rather. I read up a bit on the filing system technology and was ...
2
votes
1answer
320 views
Will custom kernel module persist through kernel upgrades?
I was wondering if custom kernel modules that I compile and install via a package will persist through a kernel upgrade. I am trying to install ZFS as kernel module in Ubuntu but the problem is ...
0
votes
0answers
195 views
zfs create / delete hang on Debian Squeeze
I installed ZFS from source (configure, make deb, dpkg -i) on Debian Squeeze without any error messages.
I created a pool with zpool create tank raidz ...
0
votes
0answers
366 views
Thoughts on home NAS server [closed]
I currently have a NAS with a 2x2TB HDD 1x16GB SSD layout on a mini-itx atom board. The NAS is in a Lian Li PC-Q07 case. On this system I was running freebsd 8 with a gmirror raid 1 setup, which was ...
7
votes
2answers
854 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 ...
1
vote
2answers
699 views
How to access freebsd zfs partition under Linux using zfs-fuse?
I have installed dual OSs on my PC box: Linux and FreeBSD. The FreeBSD is installed on a ZFS partion under /dev/sdb1. Under Linux, the fdisk -l /dev/sdb outputs
Device Boot Start End ...
5
votes
1answer
1k views
A ZFS or LVM or MD redundant heterogeneous storage proposal
I have the same problem most people have: how to create a reliable personal storage solution with the fact that:
Hard drives fail with alarming regularity. Losing files is unacceptable.
I will buy ...
3
votes
1answer
433 views
using ZFS and local hard drives as a cache for a remote iSCSI SAN
This is purely theoretical idea, i dont plan on doing this any time soon, but could you use Local hard drives as a kind of Cache to remote drives stored on Amazon EC2, shared to a user via iSCSI?
The ...
2
votes
1answer
518 views
ZFS distribution in Linux kernel? [closed]
If anyone has a better title for this question feel free to edit
I am wondering about something related to the conflict between CDDL (Sun's license) and the GPL. Mainly pertaining to the reason ZFS ...
2
votes
1answer
185 views
ZFS Scrub isn't making any progress
I started a zfs scrub operation over 10 hours ago, and it doesn't seem to be making any progress:
# zpool status
pool: foo
state: ONLINE
scan: scrub in progress since Sat Nov 26 00:11:38 2011
...
1
vote
0answers
178 views
Reading VMFS data from ZFS snapshot
I am wondering about something and maybe someone can give me a clue. If I have a server running ZFS plus an iSCSI target for my VMware ESXi box. Would ZFS snapshots of the iSCSI virtual block device ...
2
votes
2answers
488 views
ZFS NAS: PCI-e x1 SATA or built-in ICH10R?
I am planning to install Nexenta (or NexentaStor, I've not decided yet) to build a ZFS NAS out from the following machine:
MB: Intel DG45FC
Disks: 4x 2TB WD caviar green
RAM: 2x 2GB of non-ECC ...
7
votes
4answers
1k views
How to build a NAS?
I have quite a bit of photos I'd like to organize and get away from sparse DVDs and move to a NAS solution. Ideally, this would let me have some level of redundancy and more easily find what I'm ...
1
vote
1answer
245 views
How to disable autoresume of a ZFS-formatted drive on Ubuntu
I've bought an external hard drive. I want to use it with Ubuntu 11.04 (kernel 2.6.38-11-server) and the zfs-fuse package. I've successfully formatted the disk to zfs. The disk is suspending when it ...
2
votes
1answer
1k views
NFS4 / ZFS: revert ACL to clean/inherited state
My problem is identical to this Windows question, but pertains NFS4 (Linux) and the underlying ZFS (OpenIndiana) we are using. We have this ZFS shared via NFS4 and CIFS for Linux and Windows users ...
1
vote
2answers
270 views
Can you migrate an installation of Ubuntu Server from one volume to another?
Apparently, this question might be subjective (though I don't know how).
Essentially, here's what I have in mind:
I'm going to be building a NAS and am considering Ubuntu for the OS due to some of ...
