Difference between revisions of "ZFS"

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 remove in 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

Configuration files[edit]

/etc/default/zfs

Commands[edit]

List your block/disk devices: lsblk or lsblk -f or fdisk -l

Show pool status: zpool status
List ZFS pools : zpool list

zpool list -v

zfs mount -a
zfs umount

Create a new pool: zpool create

To Modify Disk identification to use disk/by-id:

zpool export DATA
zpool 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 all
zfs get all

zfs get all | grep mountpoint

zfs get all | grep dedup

Advanced[edit]

zpool import

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]

z_fr_iss
snapshotter

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

[1] ttps://en.wikipedia.org/wiki/Copy-on-write

[2] ttps://wiki.ubuntu.com/Kernel/Reference/ZFS

[3] ttps://docs.oracle.com/cd/E37838_01/html/E60974/dmgmt.html#scrolltoc

[4] ttp://manpages.ubuntu.com/manpages/bionic/man8/zfs.8.html#subcommands

[5] ttps://www.reddit.com/r/zfs/comments/7l4e4p/zfs_destroy_why_doesnt_it_have_any_confirmation/

[6] ttps://docs.oracle.com/cd/E19253-01/819-5461/gazud/index.html

[1]

[2]

[3]

[4]

[5]

[6]

@@ Line 1: / Line 1: @@
-[[w:ZFS|ZFS]] is a combined [[file Systems|file system]] and [[volume manager]] included in [[Operating Systems/Solaris|Solaris]] 10 update 2 (06/2006) and [[Ubuntu]] 16.04 LTS onwards. ZFS support advances features such as
+[[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
-* [[Linux Administration/Devices and Filesystems/Integrity|Data integrity]]
+* [[Data integrity]]
 * Integrated [[volume management]] – zpool (pooled storage)
 * [[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>
-* [[Operating Systems/Solaris|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>
+* [[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>
-* 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>
-:: <code>[[/zpool list/]] -v</code>
+:: <code>[[zpool list]] -v</code>
-* <code>zfs mount -a</code>
+* <code>[[zfs mount]] -a</code>
 * <code>zfs umount</code>
-Create a new pool:
+* Create a new pool: <code>[[zpool create]]</code>
-* Create a new pool: <code>sudo [[zpool create]] DATA /dev/sdbbbbbbb11</code>
-* Create a new stripped pool: <code>sudo zpool create MY-NEW-STRIPPED-POOL /dev/sdb /dev/sdc</code>
-* Create a new mirrored pool: <code>sudo zpool create MY-NEW-MIRROR-POOL mirror /dev/sdb /dev/sdc</code>
 To Modify Disk identification to use  disk/by-id:
@@ Line 39: / Line 38: @@
 === Pools ===
 * <code>zpool destroy YOUR_POOL</code>
-* 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>
 === 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>)
 **<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>
 * Display configuration information: <code>zdb -C</code>
@@ Line 53: / Line 52: @@
 * Show pool status: <code>zpool status</code>
 * List ZFS pools : <code>zpool list</code>
-* List FS/Volumens/snapshots: <code>[[/zfs list/]]</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 dedup</code>
 === Advanced ===
-* <code>zpool import</code>
+* <code>[[zpool import]]</code>
 == Activities ==
@@ Line 65: / Line 66: @@
 # 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>
+=== 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 ==
-* [[Linux Administration/Devices and Filesystems/LVM|LVM]]
+* {{ZFS}}
-* [[System administration/ProLiant|Proliant]]
+* [[LVM]]
+* [[Proliant]]
 * <code>[[smartctl]]</code>
 * {{fs}}
-* [[Solaris]] Operating System
+* {{Solaris}}
 [[Category:Technology courses]]

Difference between revisions of "ZFS"

Latest revision as of 10:57, 6 September 2023

Contents

Configuration files[edit]

Commands[edit]

Pools[edit]

Filesystems[edit]

List information[edit]

Advanced[edit]

Activities[edit]

Medium[edit]

Related terms[edit]

See also[edit]

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