ZFS, which stands for Zettabyte File System, is a combined file system and logical volume manager designed by Sun Microsystems.
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2answers
96 views
ZFS on Linux and Amazon EC2
I have a situation where I need dynamically expandable storage space on a Linux machine running in Amazon EC2, and ZFS came to mind. If I remember properly, ZFS supports a way to dynamically expand a ...
0
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1answer
147 views
ZFS on Linux gets corrupted on export
I just started experimenting with ZFS on Linux. I use Sabayon Linux with kernel 3.8. I used a whole single USB disk to create a pool. I tried to do only the basics
zpool create -f testing ...
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2answers
49 views
Encrypted disk filesystem compatibilities
On my Debian Linux system during the install I decided to use disk encryption (the one offered during a regulard Debian install). When the system boots up I need to enter a password and then the ...
2
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1answer
71 views
zfs send volume fluctuates misteriously
Why would the amount of data in a zfs send stream "fluctuate"? I would expect send of a specific snapshot to always produce exactly the same data!
The test data below was created through something ...
1
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0answers
681 views
How to set up ZFS with ZIL and L2ARC SSD?
I have been considering bcache and flashcache.
However my friend suggested me something called ZFS. In fact it says that formating disk with ZFS can actually do the exact same thing without kernel ...
0
votes
4answers
250 views
targeted network speed over LAN
I have a Solaris 11 system which has several NFS exports which are accessed my other systems within my LAN. I use a Linux system as a client for testing.
I wrote a quick script to test read speed and ...
1
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1answer
67 views
zfs one pool error
I have zpool with name zroot
and zroot has 4 pool
when electricity down system reboots and than i saw some error with 1 pool:
Solaris: Warning: can`t open object for zroot/var/crash
log_sysevent: ...
3
votes
1answer
279 views
FreeBSD: Remove symlinks in devfs
Background
I have been rebuilding a small home NAS. This server represents my first 'real' foray into the world of server administration and it has taught me quite a bit already. Originally, the ...
2
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2answers
1k views
Mixing 4k/512 drives with ZFS (FreeNAS)
I have the following drives:
Seagate Barracuda ST3200054AS
WDC WD20EADS-00S2B0
Samsung HD204UI
As far as I understand, the first are ordinary 512 drives while the last is 4096 (Advanced format). ...
7
votes
2answers
438 views
Is there a way to create cow-copies in ZFS?
I am trying to make cow-copies of some files/directories, but of the several ways I know of, all seem sub-optimal.
For example, btrfs can, with the use of cp --reflink=auto quickly generate ...
1
vote
1answer
589 views
AES-NI accelerated ZFS v31 encryption in Solaris 11
I'm not quite sure if this is the right place to ask this, if not, feel free to migrate it to wherever it fits in.
I'm testing the encryption feature in ZFS v31 in a Solaris 11.11.11 VM under ESXi ...
1
vote
2answers
522 views
The receiving of returns by Nagios from script through NRPE
I am using nagios3 and want to collect some information from nrpe_server.
Next script is at nrpe_server:
#!/bin/sh
#set -x
# script for checking disk usage on ZFS
# requires min zpool version 13 or ...
3
votes
3answers
3k views
FreeBSD + ZFS + Encryption ? Alternatives ? Suggestions?
I would like to create a dedicated physical server which will work as a NAS & fileserver inside my LAN (as well as through VPN).
However I need to fully encrypt the drives (both the system ones ...
2
votes
1answer
601 views
24 hour crash course in ZFS… some final questions
Due to various circumstances I've given myself a crash course on the ZFS file sytem. I need some help getting comfortable with the unknowns. Whatever those are.
Data:
Running www.zfsonlinux.org on ...
1
vote
1answer
208 views
FreeBSD zfs timeout errors
I have FreeBSD 8.2 with ZFS v28. 8 cpu core, 16Gb ram.
Two disk drives (1.5Tb WD Green) on zfs mirror raid.
My system strangely uses memory.
With alot of free (wired) memory it start to use swap and ...
1
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1answer
193 views
FreeBSD zfs create gpt
How can i create gpt marks on working system.
NAME STATE READ WRITE CKSUM
zroot ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
ad4p3 ONLINE ...
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0answers
244 views
slow samba seek performance
I am using FreeBSD 9.0 RC3 (PCBSD distro) with samba 3.4.14.
I am trying to access portions of several large (4 - 10 GB) files over samba using seek commands, and I am seeing that calls to the front ...
0
votes
1answer
335 views
ZFS adding new device to RAIDZ
I wondering about problem with adding new device to ZFS RAIDZ.
I'm thinking about it only theoretically:
After destroying ZFS pool with only RAIDZ in it. The data should be still there on the disks.
...
2
votes
1answer
440 views
adjust zfs settings on freebsd 9
What's the proper way on FreeBSD 9 to tune ZFS parameters such as vfs.zfs.arc_max and vfs.zfs.vdev.cache.size? I've seen references to /boot/loader.conf, /boot/kernel.conf and /etc/sysctl.conf but I ...
2
votes
1answer
271 views
Allowed and safe characters for ZFS filesystem in FreeBSD
Which characters are allowed and safe for ZFS file system name? Are this characters only ASCII or UTF-8 is supported?
'@' is not allowed because it is reserved for snapshots.
PS: I play with FreeBSD ...
4
votes
1answer
544 views
How to use keyfiles,for ZFS whole disk encryption?
Does anyone have a working implementation using keyfiles, preferably on SD Card, instead of a prompt for ZFS? I know how to do this with linux LVM/LUKS. In my opinion the FreeBSD full disk ...
4
votes
1answer
309 views
Why is my CIFS share showing the same files multiple times?
I asked this on ServerFault but received no response, so I figured I'd give it a try over here instead!
I have a Debian backup server running the FreeBSD kernel and a ZFS filesystem on which I store ...
1
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1answer
1k views
Compared to other filesystems why is ZFS so slow, with incoming data?
Ok.
I get about 1/3 of the speed on the same drives when using ZFS.
Now, I understand that ZFS is self-healing and that everything is also stored with its hashes. This makes it safer to use.
I ...
8
votes
4answers
388 views
The future of OpenSolaris
since OpenSolaris is more or less abandoned by Oracle, is there a nice alternative that implements the unique features of OSOL? ZFS is one thing, but I liked the image creation system, that let you ...
9
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1answer
262 views
What are you going to do with your OpenSolaris machines?
I have a file server running OpenSolaris (mainly for ZFS, which I really love), but since Oracle has abandoned it, I'm starting to think about what I'm going to do with the OS on that machine. ...
30
votes
7answers
1k views
ZFS under linux, does it work?
Could I get ZFS to work properly in Linux?
Are there any caveats / limitations?
