Signed-off-by: Fabian Ebner <f.eb...@proxmox.com> --- local-zfs.adoc | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/local-zfs.adoc b/local-zfs.adoc index 15a88bb..69979b5 100644 --- a/local-zfs.adoc +++ b/local-zfs.adoc @@ -180,7 +180,7 @@ underlying disk. zpool create -f -o ashift=12 <pool> <device> -To activate compression +To activate compression (see section <<zfs_compression,Compression in ZFS>>): zfs set compression=lz4 <pool> @@ -433,6 +433,31 @@ change-key` commands and the `Encryption` section from `man zfs` for more details and advanced usage. +[[zfs_compression]] +Compression in ZFS +~~~~~~~~~~~~~~~~~~ + +You can enable compression on a ZFS dataset with: + + zfs set compression=<algorithm> <dataset> + +The `lz4` algorithm is recommended, since it is highly performant. Other +algorithms like `lzjb` and `gzip-N`, where `N` is an integer from `1` +(fastest) to `9` (best compression ratio), are also available. + +Once enabled, ZFS compresses all *new* blocks before writing them (and +decompresses them after reading). If your CPU can compress/decompress the +data as quickly as it comes in, having compression enabled can even increase +I/O performance. Data that existed before compression was enabled will not +be compressed automatically. + +You can disable compression at any time with: + + zfs set compression=off <dataset> + +Again, only new blocks will be afffected by this change. + + ZFS Special Device ~~~~~~~~~~~~~~~~~~ -- 2.20.1 _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
