From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Mason Subject: Re: btrfs wishlist Date: Tue, 01 Mar 2011 13:39:58 -0500 Message-ID: <1299004651-sup-1713@think> References: <28499638.308.1299004542529.JavaMail.root@zimbra> Content-Type: text/plain; charset=UTF-8 Cc: linux-btrfs To: Roy Sigurd Karlsbakk Return-path: In-reply-to: <28499638.308.1299004542529.JavaMail.root@zimbra> List-ID: Excerpts from Roy Sigurd Karlsbakk's message of 2011-03-01 13:35:42 -0500: > Hi all > > Having managed ZFS for about two years, I want to post a wishlist. > > INCLUDED IN ZFS > > - Mirror existing single-drive filesystem, as in 'zfs attach' This one is easy, we do plan on adding it. > - RAIDz-stuff - single and hopefully multiple-parity RAID configuration with block-level checksumming We'll have raid56, but it won't be variable stripe size. There will be one stripe size for data and one for metadata but that's it. > - Background scrub/fsck These are in the works > - Pool-like management with multiple RAIDs/mirrors (VDEVs) We have a pool of drives now....I'm not sure exactly what the vdevs are. > - Autogrow as in ZFS autoexpand We grow to the available storage now. > > NOT INCLUDED IN CURRENT ZFS > > - Adding/removing drives from VDEVs We can add and remove drives on the fly today > - Rebalancing a pool We can rebalance space between drives today. > - dedup ZFS does have dedup we don't yet. This one has a firm maybe. -chris