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
508 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
109 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
536 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
278 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
97 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
146 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
432 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
676 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
381 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
565 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
109 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
222 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
22 views

Data recover hardware raid vs zfs pool

How does one recover data after disk failure in zfs software raid or Synology hw raid? Is it easier , less corruption in one or other ? Is one more susceptible to write corruptions than other ? ...
0
votes
1answer
71 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
88 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
123 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
546 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
345 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
115 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 ...
4
votes
0answers
105 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
262 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
258 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
83 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
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0answers
328 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
276 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
282 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
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0answers
12 views

smbd processes in uninterruptable sleep

I have fileserver running FreeBSD 10.1. The server's storage consists of two HDDs in a mirrored ZFS pool. This server is running Samba 4.1, as domain member. The domain controller is running on ...
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0answers
23 views

ZFS (Solaris 11) - SAS controller died & was replaced - pool is suspended

(Note I will amend with zpool status for clarity, when I return to the server) I have a 6x2TB disk raidz2 ZFS pool which I am hosting in Solaris 11 My original M1015 (flashed to IT mode) installed 2 ...
1
vote
0answers
75 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
129 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
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0answers
376 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
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0answers
40 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
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0answers
327 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
239 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
21 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
78 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
39 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
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0answers
107 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
142 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
240 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
800 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
169 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 ...