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Questions tagged [zfsonlinux]

zfsonlinux provides a native Linux kernel port of the ZFS filesystem so that ZFS may run natively on Linux. It is very different from ZFS-fuse which provides ZFS on top of a userspace-filesystem layer. The ZFS On Linux project is hosted on zfsonlinux.org.

zfsonlinux provides a native Linux kernel port of the ZFS filesystem so that ZFS may run natively on Linux. It is very different from ZFS-fuse which provides ZFS on top of a userspace-filesystem layer.

The ZFS On Linux project is hosted on zfsonlinux.org.

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ZFS stangre thing with unavaible pool

I have an old debian with ZFS 0.6.3 ( as far as I remember ) under the installed OS half of my pool is in "UNAVAILABLE" state. I try to explore more with FreeBSD live CD and Debian ZFS rescue disc And my pool seem OK ! I can mount partition and…
Lezar Kein
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Package dependency issue, not sure safest way to proceed

I am running into a package dependency issue. Can someone help make sense of how to resolve this? Q What steps do i need to take when it says Requires: zfs-kmod = 0.7.7 Available: kmod-zfs-0.6.5.11-1.el7_4.x86_64 (zfs-kmod) for e.g. …
Brian Thomas
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Cannot format a drive once used in a ZFS pool

I have created a ZFS test pool with a drive - now I have pulled thet drive out and want to format it to EXT4 and use it outside of ZFS. I think the pool wasn't properly destroyed. Now when I plug the drive into a different machine running ZFS - the…
unfa
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Install Linux on USB pendrive for new servers

I wonder if installing (and running) Linux (CentOS, in this case) from a USB pendrive is a smart or stupid move. Please note that: I am talking about server environment, not clients; I mean full OS install, not a read-only ISO-like boot image (ie:…
shodanshok
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ZFS write performance with SAS expander

I have a ZFS storage server running Ubuntu 16.04. I recently added a 12G SAS expander with 6 Seagate ST8000NM0055's. When I create a pool of mirrored vdevs and try to sync data from another array in the server the performance is really bad (rsync…
Eddie Dunn
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zfs-auto-snapshot only snapshots frequent snapshots even when hourly, daily, weekly and monthly snapshots are set to True

zfs-auto-snapshot is installed and has had the following settings applied to it: # zfs get all backup NAME PROPERTY VALUE SOURCE backup com.sun:auto-snapshot true …
Greg
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Unable to detect/mount zfs pool created on different machine

I'm trying to mount a zfs pool created on a different machine. To test out this scenario I have created two virtual machines in Virtualbox. The OS is Ubuntu 16.04.1 server in both cases. Machine1 has 5 virtual disks (one for the OS, the other four…
jules
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zfs remove device from pool

Before you read the title and roll your eyes, I've already read all of the various answers, posts, and articles that say you can't shrink a pool once you've made it. However, I saw this post which claims to do exactly that (i.e. remove a device from…
Ross Tajvar
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How to avoid long list of mountpoints for ZFS exported over NFS for multiple users?

We are running a cluster for about 50 user-groups mapped as Linux groups. Each group has a filesystem allocated from a ZFS storage server which is exported over NFS. This results in a long list of mountpoints that are required to be mounted over the…
Ketan Maheshwari
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ZFS: ARC and buffer cache with PostgreSQL

I am using Ubuntu Xenial, zfs and PostgreSQL 9.5 with all updates available atm. All testing is done on EC2 m4.xlarge (8GB RAM) and table size ~4GB. PostgreSQL effective_cache_size=6GB. First scenarion: primarycache=metadata, arc_max_size=1GB…
Vladimir
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ZFS Snapshot showing unreachable inside snapdir

I am using ZFS with Linux 3.19.0-58-generic. I have created some snapshots, but when I cd into these directories after one point it becomes unreachable, what does that mean ? Is there any workaround through which I can solve it.
Shilpi Agrawal
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zfs: dataset does not exist

I'm not able to set mountpoint to the pool. # zpool import pool: wd-black id: 18120690490361195109 state: ONLINE action: The pool can be imported using its name or numeric identifier. config: wd-black ONLINE …
Vaclav Kasal
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How do I prevent ntfs-3g use starving my ZFS ARC of memory?

I have an HP Microserver running OpenMediaVault 2.1.18 (Stone burner), based on Debian GNU/Linux 7 (wheezy). A few days ago, I needed to copy a large number of files from a USB drive, formatted with NTFS. I connected it, mounted it and started the…
Mark Booth
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NFS client, ZFS Server ZoL: cat to changed file ends with not found

We get in trouble since an update from our clients from Ubuntu 12.04 to Ubuntu 14.04. The behavior: On client A I change an existing file foo on a nfs share. On client B I do a cat foo. 1st time after mounting it works. cat shows the content of foo.…
Joerg Ullmann
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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 data/Other to inherit sharenfs from data. From…
eengineer
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