Difference between revisions of "ZFS"
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| − | [[wikipedia:ZFS|ZFS]] is a combined [[file Systems|file system]] and [[volume manager]] included in [[ | + | [[wikipedia:ZFS|ZFS]] ([[2006]]) is a combined [[file Systems|file system]] and [[volume manager]] included in [[Solaris]] 10 update 2 (06/2006) and [[Ubuntu]] 16.04 LTS onwards. ZFS support advances features such as |
| − | * [[ | + | * [[Data integrity]] |
* Integrated [[volume management]] – zpool (pooled storage) | * Integrated [[volume management]] – zpool (pooled storage) | ||
* [[Copy on Write]] (CoW) <ref>https://en.wikipedia.org/wiki/Copy-on-write</ref> | * [[Copy on Write]] (CoW) <ref>https://en.wikipedia.org/wiki/Copy-on-write</ref> | ||
| − | * Compression | + | * Compression (<code>[[zfs set compression]]=off your_pool/filesystem (or just zfs set compression=off your_pool</code>, <code>[[zpool get all]]</code>) |
| − | * Snapshots and clones | + | * [[Snapshots]] and clones |
| − | * [[Deduplication]]<ref>https://wiki.ubuntu.com/Kernel/Reference/ZFS</ref> | + | * [[Deduplication]]<ref>https://wiki.ubuntu.com/Kernel/Reference/ZFS</ref>: <code>[[ZFS deduplication|zfs set dedup=on POOL_NAME/FS_NAME]]</code> |
| − | * [[ | + | * [[Quotas]]: <code>[[zfs set quota]]</code> |
| + | * [[Solaris]]: Online shrink <code>zpool remove</code> in Solaris 11.4 released in August 2018 <ref>https://docs.oracle.com/cd/E37838_01/html/E60974/dmgmt.html#scrolltoc</ref> | ||
| + | * [[Encryption]]: integrated into OpenZFS 0.8.0 available for Debian and Ubuntu Linux distributions | ||
| − | Commands: <code>zfs</code>, <code>zpool</code>, <code>zdb</code> | + | Commands: <code>zfs</code>, <code>[[zpool]]</code>, <code>zdb</code> |
| − | * Installation: <code>sudo apt install zfsutils-linux</code> | + | * Ubuntu Installation: <code>sudo apt install zfsutils-linux</code> |
| Line 20: | Line 22: | ||
* List your block/disk devices: <code>[[lsblk]]</code> or <code>lsblk -f</code> or <code>[[fdisk]] -l</code> | * List your block/disk devices: <code>[[lsblk]]</code> or <code>lsblk -f</code> or <code>[[fdisk]] -l</code> | ||
| − | * Show pool status: <code>zpool status</code> | + | * Show pool status: <code>[[zpool status]]</code> |
| − | * List ZFS pools : <code>[[ | + | * List ZFS pools : <code>[[zpool list]]</code> |
| − | :: <code>[[ | + | :: <code>[[zpool list]] -v</code> |
| − | * <code>zfs mount -a</code> | + | * <code>[[zfs mount]] -a</code> |
* <code>zfs umount</code> | * <code>zfs umount</code> | ||
| − | * Create a new pool | + | * Create a new pool: <code>[[zpool create]]</code> |
To Modify Disk identification to use disk/by-id: | To Modify Disk identification to use disk/by-id: | ||
| Line 36: | Line 38: | ||
=== Pools === | === Pools === | ||
* <code>zpool destroy YOUR_POOL</code> | * <code>zpool destroy YOUR_POOL</code> | ||
| − | * Show pool status: <code>zpool status</code> | + | * Show pool status: <code>[[zpool status]]</code> |
| − | * List ZFS pools : <code>[[ | + | * List ZFS pools : <code>[[zpool list]]</code> |
=== Filesystems === | === Filesystems === | ||
| − | * Create a new filesystem: <code>sudo zfs create DATA/datafs</code><ref>http://manpages.ubuntu.com/manpages/bionic/man8/zfs.8.html#subcommands</ref> | + | * Create a new filesystem: <code>sudo [[zfs create]] DATA/datafs</code><ref>http://manpages.ubuntu.com/manpages/bionic/man8/zfs.8.html#subcommands</ref> |
* Destroy a zfs filesystem: <code>sudo zfs destroy DATA/datafs_TO_DESTROY</code> (Warning: no confirmation requested<ref>https://www.reddit.com/r/zfs/comments/7l4e4p/zfs_destroy_why_doesnt_it_have_any_confirmation/</ref>) | * Destroy a zfs filesystem: <code>sudo zfs destroy DATA/datafs_TO_DESTROY</code> (Warning: no confirmation requested<ref>https://www.reddit.com/r/zfs/comments/7l4e4p/zfs_destroy_why_doesnt_it_have_any_confirmation/</ref>) | ||
**<code>sudo zfs destroy -r DATA/datafs_TO_DESTROY</code> | **<code>sudo zfs destroy -r DATA/datafs_TO_DESTROY</code> | ||
| − | * Set a quota to a filesystems: <code>zfs set quota=50G pool/home/bob</code><ref>https://docs.oracle.com/cd/E19253-01/819-5461/gazud/index.html</ref> | + | * Set a quota to a filesystems: <code>[[zfs set quota]]=50G pool/home/bob</code><ref>https://docs.oracle.com/cd/E19253-01/819-5461/gazud/index.html</ref> |
* Check zfs service status: <code>systemctl status "zfs*" "zpool*"</code> | * Check zfs service status: <code>systemctl status "zfs*" "zpool*"</code> | ||
* Display configuration information: <code>zdb -C</code> | * Display configuration information: <code>zdb -C</code> | ||
| Line 50: | Line 52: | ||
* Show pool status: <code>zpool status</code> | * Show pool status: <code>zpool status</code> | ||
* List ZFS pools : <code>zpool list</code> | * List ZFS pools : <code>zpool list</code> | ||
| − | * List FS/Volumens/snapshots: <code>[[ | + | * List FS/Volumens/snapshots: <code>[[zfs list]]</code> |
| − | * <code>zfs get all</code> | + | * <code>[[zpool get all]]</code> |
| + | * <code>[[zfs get all]]</code> | ||
::<code>zfs get all | grep mountpoint</code> | ::<code>zfs get all | grep mountpoint</code> | ||
| + | ::<code>zfs get all | grep dedup</code> | ||
=== Advanced === | === Advanced === | ||
| − | * <code>zpool import</code> | + | * <code>[[zpool import]]</code> |
== Activities == | == Activities == | ||
| Line 62: | Line 66: | ||
# Follow Ubuntu Tutorial about Setup a ZFS storage pool: https://tutorials.ubuntu.com/tutorial/setup-zfs-storage-pool#0 | # Follow Ubuntu Tutorial about Setup a ZFS storage pool: https://tutorials.ubuntu.com/tutorial/setup-zfs-storage-pool#0 | ||
# Create you first ZFS pool: <code>zpool create</code> | # Create you first ZFS pool: <code>zpool create</code> | ||
| + | |||
| + | === Medium === | ||
| + | # Read about [[ZFS]] <code>rm</code> "expensive" operations: https://serverfault.com/a/801080, even more so if [[deduplication]] is enabled. | ||
| + | |||
| + | == Related terms == | ||
| + | * <code>[[z_fr_iss]]</code> | ||
| + | * [[snapshotter]] | ||
== See also == | == See also == | ||
| − | * [[ | + | * {{ZFS}} |
| − | * [[ | + | * [[LVM]] |
| + | * [[Proliant]] | ||
* <code>[[smartctl]]</code> | * <code>[[smartctl]]</code> | ||
* {{fs}} | * {{fs}} | ||
| − | * | + | * {{Solaris}} |
[[Category:Technology courses]] | [[Category:Technology courses]] | ||
Latest revision as of 10:57, 6 September 2023
ZFS (2006) is a combined file system and volume manager included in Solaris 10 update 2 (06/2006) and Ubuntu 16.04 LTS onwards. ZFS support advances features such as
- Data integrity
- Integrated volume management – zpool (pooled storage)
- Copy on Write (CoW) [1]
- Compression (
zfs set compression=off your_pool/filesystem (or just zfs set compression=off your_pool,zpool get all) - Snapshots and clones
- Deduplication[2]:
zfs set dedup=on POOL_NAME/FS_NAME - Quotas:
zfs set quota - Solaris: Online shrink
zpool removein Solaris 11.4 released in August 2018 [3] - Encryption: integrated into OpenZFS 0.8.0 available for Debian and Ubuntu Linux distributions
Commands: zfs, zpool, zdb
- Ubuntu Installation:
sudo apt install zfsutils-linux
Contents
Configuration files[edit]
/etc/default/zfs
Commands[edit]
- Show pool status:
zpool status - List ZFS pools :
zpool list
zpool list -v
zfs mount -azfs umount
- Create a new pool:
zpool create
To Modify Disk identification to use disk/by-id:
zpool export DATAzpool import -d /dev/disk/by-id DATA- Verify:
zdb -C
Pools[edit]
zpool destroy YOUR_POOL- Show pool status:
zpool status - List ZFS pools :
zpool list
Filesystems[edit]
- Create a new filesystem:
sudo zfs create DATA/datafs[4] - Destroy a zfs filesystem:
sudo zfs destroy DATA/datafs_TO_DESTROY(Warning: no confirmation requested[5])sudo zfs destroy -r DATA/datafs_TO_DESTROY
- Set a quota to a filesystems:
zfs set quota=50G pool/home/bob[6] - Check zfs service status:
systemctl status "zfs*" "zpool*" - Display configuration information:
zdb -C
List information[edit]
- Show pool status:
zpool status - List ZFS pools :
zpool list - List FS/Volumens/snapshots:
zfs list zpool get allzfs get all
zfs get all | grep mountpointzfs get all | grep dedup
Advanced[edit]
Activities[edit]
- Read selecting dev names when creating a pool before you create your first ZFS pool: https://github.com/zfsonlinux/zfs/wiki/FAQ#selecting-dev-names-when-creating-a-pool and https://wiki.archlinux.org/index.php/Persistent_block_device_naming
- Read ArchLinux documentation about ZFS: https://wiki.archlinux.org/index.php/ZFS#Creating_a_storage_pool
- Follow Ubuntu Tutorial about Setup a ZFS storage pool: https://tutorials.ubuntu.com/tutorial/setup-zfs-storage-pool#0
- Create you first ZFS pool:
zpool create
Medium[edit]
- Read about ZFS
rm"expensive" operations: https://serverfault.com/a/801080, even more so if deduplication is enabled.
Related terms[edit]
See also[edit]
- ZFS: ZFS deduplication,
ZFS snapshot,zfs list,zpool status,zpool create,zfs create, zfs get all, zfs set, zfs mount, zfs umount, zfs rollback - LVM
- Proliant
smartctl- File systems:
ext4,XFS,ZFS,btrfs,wipefs,findfs,HDFS,overlay,aufs,virt-filesystems, Windows: (FAT, NTFS, ReFS), GPFS, squashfs, Ecryptfs, Encfs, FUSE, VMFS, Comparison of distributed file systems, Userspace filesystem, Resize filesystem size - Solaris
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Original Source: https://en.wikiversity.org/wiki/Linux_Administration/Devices_and_Filesystems/ZFS
- ↑ https://en.wikipedia.org/wiki/Copy-on-write
- ↑ https://wiki.ubuntu.com/Kernel/Reference/ZFS
- ↑ https://docs.oracle.com/cd/E37838_01/html/E60974/dmgmt.html#scrolltoc
- ↑ http://manpages.ubuntu.com/manpages/bionic/man8/zfs.8.html#subcommands
- ↑ https://www.reddit.com/r/zfs/comments/7l4e4p/zfs_destroy_why_doesnt_it_have_any_confirmation/
- ↑ https://docs.oracle.com/cd/E19253-01/819-5461/gazud/index.html
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