Date: Mon, 28 Mar 2011 14:50:37 +0300 From: Andriy Gapon <avg@freebsd.org> To: lev@freebsd.org Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org Subject: Re: Backup tool fot ZFS with all "classic dump(8)" fetatures -- what should I use? (or is here any way to make dump -L works well on large FFS2+SU?) Message-ID: <4D90760D.70906@freebsd.org> In-Reply-To: <895726715.20110328112007@serebryakov.spb.ru> References: <895726715.20110328112007@serebryakov.spb.ru>
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on 28/03/2011 10:20 Lev Serebryakov said the following: > Hello, Freebsd-stable. > > Now I'm backing up my HOME filesystem with dump(8). It works > perfectly for 80GiB FS with many features: snapshot for consistency, > levels, "nodump" flag (my users use it a lot!), ability to extract > only one removed file from backup without restoring full FS, simple > sctipy wrap-up for levels schedule, etc. > > On new server I have huge HOME (500GiB). And even if it is filled > up only with 25GiB of data, creating snapshot takes about 10 minutes, > freeze all I/O, and sometimes FAILS (!!!). > > I'm thinking to transfer GOME filesystem to ZFS. But I can not find > appropriate tools for backing it up. Here is some requirements: > > (1) One-file (one-stream) backup. Not directory mirror. I need to > store it on FTP server and upload with single command. > > (2) Levels & increment backups. Now I have "Monthly (0) - Weekly > (1,2,3) - daily (4,5,6,7,8,9)" scheme. I could afford other schemes, > but if they doesn't store full backup every day and doesn't need full > backup more often than weekly. > > (3) Minimum of local metadata. Storing previous backups locally to > calculate next one is not appropriate solution. "zfs send" needs > previous snapshots for incremental backup, for example. > > (4) Working with snapshot (I think, it is trivial in case of ZFS). > > (5) Backup exclusions should be controlled by users (not super-user) themselves, > like "nodump" flag in case of FFS/dump(8). "zfs send" can not > provide this. I have very responsible users, so full backup > now takes only up to 10GiB when all HOME FS is about 25GiB, so it > is big help when backup is sent over Internet to other host. > > (6) Storing of ALL FS-specific information -- ACLs, etc. > > (7) Free :) > > Is here something like this for ZFS? "zfs send" looks promising, > EXCEPT item (5) and, maybe, (3) :( > > gnu tar looks like everything but (6) :( I have a script built around zfs snapshot and star (archivers/star) that has functionality similar to your requirements. -- Andriy Gapon
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