ZFS is a modern filesystem originally developed by Sun Microsystems and licensed under the CDDL. An open-source fork of ZFS can be found at http://open-zfs.org/ , which is supported by ZFSonlinux.org, illumos.org and ZFS developers in the FreeBSD & MacOSX communities.

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7
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1answer
500 views

FreeNAS ZFS Kernel Panic

I'm running FreeNAS 8 and my computer had a hard reset from a power outage and now every time I try to boot I get the following error message: Error Message: panic: zfs_replay_acl_v0:898: unsupported ...
4
votes
1answer
87 views

User permissions/feature limitations of the native zfs smbshare service on linux

I'm using zfs on linux, using the sharesmb=on option to try out the native smb share feature instead of adding the zfs tank path to my smb.conf file. The share has shown up on my windows machines, ...
4
votes
1answer
521 views

ZFS ARC size vs target size

I am trying to understand the inner workings of the ZFS ARC. However, I am confused with several things: actual (zfs:0:arcstats:size) vs target size (zfs:0:arcstats:c). I understand that actual size ...
3
votes
1answer
273 views

ZFS on LUKS not recognized at boot

I've got 6 physical drives in RAID-Z2, which I intend to one-by-one convert to dm-crypt devices. My process was roughly: dd if=/dev/zero of=/dev/sdf Create keyfile /etc/crypttab.d/crypt-1.key ...
3
votes
1answer
75 views

Recovering data from ZFS mirror

I have two disks from an old server that I believe were a mirrored set. I placed them in a new server and tried to do a zpool import but nothing was found. Does that mean the data that was on them ...
2
votes
1answer
65 views

ZFS cksum errors on LSI 9207-9i (SAS2308) with Samsung 850 Pro SSDs

I am testing an LSI 9207-8i controller with 8x Samsung 850 Pro 256GB SSDs attached. SSDs are running latest firmware EXM02B6Q, controller is running P17 and has exhibited same issues with P19. Server ...
2
votes
1answer
140 views

ZFS - zpool replace never finishes

I have a 5 x 3TB raidz1 array on a ubuntu 14.04.1 server. Last month, one of the drives died (audible clicking). I was able to replace the drive with zpool replace RAID <dead drive> <new ...
2
votes
1answer
415 views

Cluster-Shared Volume on Windows Server 2012 R2 drops off with minor iSCSI pauses

We are running into an issue here where the Cluster-Shared Volume attached to our Hyper-V 2012 R2 cluster is being dropped off / faulted with the slightest interruption from the iSCSI SAN connection ...
2
votes
1answer
659 views

ZFS, NFS and Nexenta

Is this message familiar to someone ? zfs-clu-01a rpcmod: [ID 851375 kern.warning] WARNING: svc_cots_kdup no slots free zfs-clu-01a last message repeated 75220 times We have a lot of trouble ...
2
votes
1answer
594 views

How best to integrate PPA into Debian?

I'm working with ZFS on Linux, on my Debian squeeze server. I've found a useful package in an Ubuntu PPA, apparently by one of the ZoL developers, and I would like to integrate it into my package ...
1
vote
1answer
320 views

freenas disc problems - smart error - how to repair zfs raid?

I have troubles with my freenas 9.2.1. It crashed today. Its running a fileserver on zfs jbod raid 2. I'm not sure what exactly causes the problems. The system is booting however reacting pretty slow. ...
1
vote
1answer
413 views

Slow performance due to txg_sync for ZFS 0.6.3 on Ubuntu 14.04

I am using native ZFS with "ZFS on Linux" installed from the PPA here. Setup was not a problem and I am using it in mirrored configuration with two WD 4TB Red HDDs. Unfortunately I am having ...
1
vote
1answer
103 views

ZFS snapshots and atomic updates

So I'm tinkering around with ZFS on linux and zrep. I've got 2 VMs on my laptop and I'm running zrep and synchronizing the contents of one filesystem to another. One unexpected situation is this: ...
1
vote
1answer
219 views

What is the best private cloud storage setup

I need to create a private cloud and I'm searching for the best setup. These are my 2 most important requirements 1. Disk and system redundant 2. Price / GB as low as possible The system is going to ...
1
vote
1answer
1k views

how-to: ZFS design and cache tuning : ARC, ZIL

storage system in consideration from below h/w lying idle: 6 x 300GB 10K SAS; 2 X 146 GB 15K SAS; 12GB DDR2 RAM; Xeon CPU 2.5Ghz two 1GB NIC ports 1 - DLink 1GB ethernet switch (1000/100 MB) 8-port ...
0
votes
1answer
60 views

GPT partition errors on boot - ZFS FreeBSD

My system appears to be running fine and I'm just trying to clean up errors. That said... On boot, I get the following errors for all drives in a 24 disk storage enclosure: GEOM: ...
0
votes
1answer
85 views

add a directory inside freebsd jail

Not sure if this is correct, but i have now installed freebsd 10 on top of ZFS with jails and have created a jail for Mongodb. For the data files I used the following: zfs create -o atime=off \ ...
0
votes
1answer
121 views

Samba intermittently timing out on writes to a ZFS share

I'm experiencing an odd problem on a file server intermittently failing when writing files. The problem occurs when I try to write a number of files from a (Windows 7) client at once. ...
0
votes
1answer
1k views

FreeNAS/FreeBSD: How to access status of ZFS volume from jail?

I am trying to set up NRPE to enable remote Nagios monitoring of a new FreeNAS 0.91 system. I mostly have this working. I can connect and inquire about basic information like number of processes, ...
0
votes
1answer
539 views

Netatalk 3.0.1 disconnects with Bad file descriptor on FreeBSD

I am having trouble with my netatalk server 3.0.1 on FreeBSD-9.1 RELEASE. Netatalk was installed from the ports collection and is sharing some directories over the network. Update also netatalk ...
0
votes
1answer
343 views

FreeNAS: How to increase scrub 'threshold'?

My NAS box is set to default scrub threshold every 35 days. How do I change it to scrub every Saturday night? Do I need to create a cron job? I'm on FreeNAS-8.0.4-RELEASE-p2-x64 (11367)
0
votes
1answer
112 views

Samba shows each file several times in the same folder

I have Samba 3.5.11 on Debian/kfreebsd sid. (Also tested with 3.6.1 from experimental) I have a zfs filesystem Storage/Photos. If I open one the the folders on there (Storage/Photos/folder1) it shows ...
0
votes
1answer
137 views

Opensolaris, ZFS shares

I've recently updated to OpenSolaris 2010.05 from 2009.06. Its currently set up to share one of the the ZFS zpools to the other machines on my network. However, only a single account is able to access ...
0
votes
1answer
251 views

Older raid controllers in raid 5 vs. Jbod and SW raid

I'm in the fortunate position to have 6 Supermicro older VOD servers with the following config: Supermicro 3U case, 3xPSU Dual Xeon 3ghz P4 class cpu (5 years old.. havnt checked the exact type) 4GB ...
-1
votes
1answer
121 views

Getting data out of a ZFS HDD without pool

After a lot of manipulation mistakes, is it possible to extract the data from a HDD which was mirrored in ZFS, but with a destroyed pool (even zpool import -D does not work) ?
4
votes
0answers
100 views

Why is ZFS not doing anything with my disk's duff sector?

I was under the impression that if an I/O error occurs during a read from a ZFS pool, two things will happen: The failure will be recorded in either the READ or CKSUM statistic of the relevant ...
3
votes
0answers
249 views

Using ZFS head node as database server?

I'm using a dual-head ZFS-backed NAS for high availability cluster shared storage, based on Nexenta's recommended architecture as seen here: The disks in 1 JBOD will store the database files for a ...
2
votes
0answers
254 views

ZFS on RedHat configuration

I have to set up a ZFS storage appliance (Oracle ZFS Storage ZS3-2) with NFSv4. The NFS is mounted on a Redhat 6.5 cluster, where the linux users are created (they don`t exist on the appliance). ...
2
votes
0answers
82 views

How do I get Ubuntu to forget about a destroyed zfs pool?

I have also asked this question over on Ask Ubuntu but I thought I'd try here as well. The details can be found at: ...
2
votes
0answers
324 views

Can't remove zfs log device from pool

I run a FreeBSD 9.0 server with ZFS pool version 28 and ZFS version 5. I had two pools with a log on ssd's two partitions. These pools was created on FreeBSD 8.2 with ZFS pool version 15, and ZFS ...
2
votes
0answers
273 views

ZFS - Pool name has the same name as Dataset (volume)?

I messed up my pool by doing zfs send...receive So I got the following : zpool list NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT rpool 928G 17.3G 911G 1% 1.00x ONLINE - tank1 ...
2
votes
0answers
279 views

What ZFS file structure to use for zfs-root linux system?

In ZFS, you can build your filesystem hiearchy to include different fs-attributes per filesystem. For insance, compression in one area, no-exec/suid in others, noatime. For example, a HOWTO for ...
1
vote
0answers
72 views

Can I use ZFS to replicate (fast) EC2 instance store to (slow) EBS store?

I love the idea of using SSD EBS instance stores as L2ARC and ZIL for a zpool backed by EBS. Going further (and into more dangerous territory), could I instead create a zpool mirror with the 2 ...
1
vote
0answers
122 views

GlusterFS and ZFS snapshots

I know many people are using GlusterFS on top on ZFS. I'm wondering about snapshots: how do you ensure snapshot homogeneity among the nodes? I mean if you do a snapshot on a node, how can you be sure ...
1
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0answers
33 views

Can I force nfsd on Solaris to announce more free space than physically available?

I'm working with various Solaris based distributions (OmniOS, SmartOS, Nexenta) and I have a highly compressible and deduplicable data set on a very small amount of high performance storage. The ...
1
vote
0answers
366 views

ZFS: Why does resilvering go over all disks in a pool rather than only those in the raidz1 vdev?

I'm wondering why Solaris is reporting action: Wait for the resilver to complete. scan: resilver in progress since Sun Jul 14 02:42:44 2013 24.9T scanned out of 39.2T at 54.9M/s, 75h46m to go ...
1
vote
0answers
39 views

partitioning a 2x larger disk to house zfs migration

so there are numerous sites taking about using vdevs made from disk partitions like this in order to reorder vdevs of different sizes. however, i have the following physical disks: Disk /dev/sda: ...
1
vote
0answers
326 views

Freenas - Expanding volume

We currently have a server with 5x3TB disks configured as a RAIDZ: zpool status pool: raid-5x3 state: ONLINE scrub: none requested config: NAME STATE ...
1
vote
0answers
235 views

Solaris x86 11.1 and qlt driver — only 3/4 ports attach

I'm using the QLogic QLE2564 4-port 8Gb HBA. The problem I have is that when I attach the qlt target mode driver to the card, only 3/4 ports attach the driver. ffffc10006854e58 pciex1077,2532, ...
1
vote
0answers
123 views

Accidentally resilvered 2 drives

We had 2 failed drives in our ZFS raidz1 pool. One had been resilvered to a spare and another was just out. The pool was in degraded mode. I replaced both drives and began the resilver on the ...
0
votes
0answers
14 views

ZFS on FreeBSD panic: allocating allocated segment

My PCBSD (i.e. basically FreeBSD) system won't boot anymore, I'm getting the above error message when importing the storage pool. This is apparently a known issue (see e.g. here, here or even Oracle's ...
0
votes
0answers
67 views

ZFS on Linux denied access when accessing child dataset on NFS

This is on 12.04 LTS with the latest ZFS on Linux from the ppa. I have two a storage pool named data, and a dataset data/Other with different settings (e.g. compression). I set data to sharenfs and ...
0
votes
0answers
37 views

Solaris ZFS, cant send/recv to remote encrypted pools?

I'm trying to do a simple task, which is to send a snapshot of a dataset to a remote pool. Both src/dest pools are encrypted. Here is the command I issue: zfs send -R testsnapshot@2014 | ssh ...
0
votes
0answers
103 views

zfs raidz can not read from disk

my freebsd 10 server running on zfs raidz. I have a problem with reading files, test dd of=/dev/null if=/tmp/test/1000mb.bin bs=1024k count=1000 953+1 records in 953+1 records out 1000000000 bytes ...
0
votes
0answers
138 views

zfs checksum verfication failed, solaris booting failed

Looks like my solaris 10 got hosed overnight for unknown reason. I get below error while booting and also when trying to cat menu.lst file in grub. Hard disk is being detected by ubuntu so it may not ...
0
votes
0answers
235 views

Debian 7 auto mounting .zfs snapshot directory

Today I come with another weird thing on Debian 7 that I cannot explain myself.. Context : Os: Debian7 Kernel: Linux http-apache-01a 3.2.0-4-amd64 #1 SMP Debian 3.2.54-2 x86_64 GNU/Linux This system ...
0
votes
0answers
775 views

Any disadvantage of running a virtual machine using files for its drives hosted on freenas/zfs?

I recently got tired of the really slow I/O reads and latency (10-30 MB/s read, not sure for latency but very slow) from a provider I rent a virtual machine from. He uses freenas, the virtual machine ...
0
votes
0answers
3k views

ZFS import unable to find any pools

I had a ZFS pool -- a mirror containing 2 vdevs -- running on a FreeBSD server. I now have only one of the disks from the mirror, and I am trying to recover files from it. The ZFS data sits in a GPT ...
0
votes
0answers
168 views

zfs recovery after hardware failure

My ZFS storage hardware failed including the rpool disks. I installed a new server and tried to import use zfs import -f poolname. I am able to see the pool and the disk utilized. But I am not able to ...
0
votes
0answers
74 views

Xen Debian VM and NFS

I have 2 servers in a pool running a single VM on each server. I just got xencenter running so I am managing through that. I want to have a shared storage (NFS) between the two of them, so that if one ...