----------------eredeti üzenet----------------- Feladó: "Martin Maurer" [email protected] Címzett: [email protected], [email protected] Dátum: Thu, 19 Feb 2015 14:38:39 +0100 ------------------------------------------------- > Hi all, > > We just released Proxmox VE 3.4 - the new version is centered around > ZFS, including a new ISO installer supporting all ZFS raid levels.
Hi, Thank you for your effort, it is really cool to have zfs support out of box! I just did a quick test of the new installer and check the settings of the pool and the logic behind it. Generally I like it very much! Some notes from my experiences: - pve uses the latest stable zfsonlinux - pve 3.4 put the root filesystem into the ZFS pool -> awesome, very handy, safe, etc. - it use ashift=12 -> pretty cool, always recommended - it use gzip-6 compression by default -> as the system supports lz4 compression, I recommend to use this one instead of gzip-X. In general. Of course, it is possible to change the compression on the fly (for newly written blocks) but for general usage, lz4 needs less power and provides a really nice compressratio. - it use a swap on the rpool -> I am not sure, it is a good idea to have swap on zfs, even it seems cool. Depends on the memory allocation, zfs memory fragmentation overhead etc., so, be careful with this option. - it has zfs default ARC size (1/2 of the available physical RAM) -> plan ahead and calculate your memory map: VMs, CTs, twice of ARC (rule of thumb). Limit ARC to a lower value if you have not so much "free memory". - the installer does not provide l2arc/zil, but it is easy to add/remove them later. Depending on your system, you can set them on 2 or more SSDs. Probably not everybody need them, depends on the using profile. - it can use thin provision for VMs, which pretty cool (sparse zvol). In general: before somebody put his system to production but he/she is new in ZFSonLinux world, I strongly recommend to test the system and care about the memory map (how many allocated/dedicated to ARC, VMs, CTs). The fun begins :) Bye, István _______________________________________________ pve-user mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
