Date: Fri, 09 Feb 2007 14:34:13 +0100 From: Indigo <indigo@voda.cz> To: "Ivan Voras" <ivoras@fer.hr>, freebsd-fs@freebsd.org Subject: Re: comments on newfs raw disk ? Safe ? (7 terabyte array) Message-ID: <op.tnhhbbhq5sheu4@spyro.eiecon.net> In-Reply-To: <eqhrv8$92j$1@sea.gmane.org> References: <646424.65334.qm@web58613.mail.re3.yahoo.com> <eqhrv8$92j$1@sea.gmane.org>
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Hi, does that mean that slicing and partitioning additional drives has no = advantages on a purely FreeBSD machine? Vasek On Fri, 09 Feb 2007 14:12:07 +0100, Ivan Voras <ivoras@fer.hr> wrote: > Arone Silimantia wrote: > >> dd if=3D/dev/zero of=3D/dev/da1 bs=3D1k count=3D1 >> newfs -m 0 /dev/da1 >> mount /dev/da1 /mnt >> >> And that's that. But it seems too good to be true! Can someone plea= se >> comment on this scheme and if there are some hidden dangers or lack o= f >> functionality that I will regret in the future ? > > No dangers at the system level - you can create your file system on an= y > storage-like device, use it and mount it any way you want. Raw disks a= re > a perfectly valid target. > >> Will it fsck just like any other UFS2 partition I run ? Can I run >> quotas and snapshots and everything else on it, just like normal ? > > Yes. > >> Other than the fact that I can't boot this, is there _any downside >> whatsoever_ to newfs'ing raw disk like this ? > > Only "collateral" problems because of the partition size: a regular > (non-softupdates) fsck will take a LONG time to finish and eat a LOT o= f > memory while it's doing its stuff. You'll need a lot of swap space (1G= B > per TB? someone had empirical numbers on this, I'm sure) if you think > you'll need to fsck it entirely. Creating snapshots will also take a > long time on it, and you probably want to search the lists for > recommendations about creating snapshots in a second level directory i= n > order not to block the root directory. Related to this is > background-fsck which works by creating snapshots, so you'll probably > want to disable it. > > In any case, try every feature you think you'll need before deploying = it. > > Also, write about your experience on this list :) > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"
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