From mboxrd@z Thu Jan 1 00:00:00 1970 From: dexen deVries Subject: Re: RAID and file system encryption Date: Tue, 2 Aug 2011 10:45:45 +0200 Message-ID: <201108021045.45239.dexen.devries@gmail.com> References: <889e085c06295b2f79289eb86be534ef.squirrel@linuxbsdos.com> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:to:subject:date:user-agent:references:in-reply-to:x-face :mime-version:content-type:content-transfer-encoding:message-id; bh=bZwO/PiXoHr7vY8RyabSsDubv16uBeXnP8n0XU6Qtkk=; b=i1SVe0EocU1k6M+ry0sBcNw+0UPQIRI3Aj5qUHloqqaD1HQ/3i7zlDg0GpvOXfx+TQ k5aWI1wn8RwIwlW2S60P2gEWD8jBlJPIAmk9b6u5AObTn55WQETMAQbaWG2f+W2aR2Tw DMilgDdyBQvReU/28GpvrB9hWfSdgJtzQOSoU= In-Reply-To: <889e085c06295b2f79289eb86be534ef.squirrel-aEpbUQpJQqXlKS8GlytQkw@public.gmane.org> Sender: linux-nilfs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: Text/Plain; charset="utf-8" To: linux-nilfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org On Tuesday 02 of August 2011 10:22:24 you wrote: > Hi, >=20 > Just want to find out if nilfs2 supports RAID and native file system > encryption. Any plans to, if it does not? not by itself, but it stacks nicely over LVM2 and LUKS for, respectivel= y, RAID=20 and encryption. Guess that's more unix-ish than having one program (her= e:=20 nilfs2 driver) have every possible feature built-in. > Also, at this stage in its development, are there any serious drawbac= ks to > using nilfs2 on a desktop distribution? there are small ones. There is no KDE GUI for browsing snapshots (as of= yet). =46ree space does not increase immediately after removing files, which = may=20 surprise users that aren't aware of the snapshotting. Last but not least, the filesystem plays badly with Bitcoin (and perhap= s other=20 similar programs). Bitcoin causes very many checkpoints to be created, = quickly=20 eating up the free space. AFAIK, it's because bitcoin issues numberous = small=20 transactions to the underlying BDB very often, even 2...4/second in som= e=20 cases. And bitcoin's BDB is configured to use 64kb `page' size, IIRC. I= 've got=20 sick of it and moved entire bitcoin database to XFS, leaving only walle= t.dat=20 on NILFS2. On the other hand, NILFS2 works well under mild-loaded MySQL, both on t= est www=20 server and for KDE's internal data like Nepomuk and Akonadi storage. I = keep 30=20 days worth of checkpoints on the test server, has already helped us onc= e to=20 recover certain old files. On PCs and workstations I keep about 10...48= h worth=20 of checkpoints. NILFS2 performs nicely under mixed workload, both in home and workplace= use.=20 Worth noting is that checkout of large GIT repository (kernel sources) = takes=20 exceptionally short. Regards, --=20 dexen deVries [[[=E2=86=93][=E2=86=92]]] =46or example, if the first thing in the file is: an XML parser will recognize that the document is stored in the traditi= onal=20 ROT13 encoding. (( Joe English, http://www.flightlab.com/~joe/sgml/faq-not.txt )) -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" = in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html