Date: Fri, 28 May 2010 21:13:16 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: Dave Hayes <dave@jetcafe.org> Cc: freebsd-stable@freebsd.org, Clifton Royston <cliftonr@lava.net> Subject: Re: Locking a file backed mdconfig into memory Message-ID: <4C0007BC.4000806@icyb.net.ua> In-Reply-To: <201005281757.o4SHvTwq020905@hugeraid.jetcafe.org> References: <201005272348.o4RNmgWh014243@hugeraid.jetcafe.org> <20100528043006.GA18560@lava.net> <201005281757.o4SHvTwq020905@hugeraid.jetcafe.org>
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on 28/05/2010 20:57 Dave Hayes said the following: > Clifton Royston <cliftonr@lava.net> writes: >> It sounds like what you really want is to load the contents of the >> specified file as a memory system? That's not part of mdconfig's >> repertoire, to the best of my recollection. > > So if, in /etc/loader.conf, I do this: > > rootfs_load="YES" > rootfs_type="mfs_root" > rootfs_name="/mfsboot" > vfs.root.mountfrom="ufs:md0" > > and /mfsboot comes from a bootable DVD, am I to assume that this mount > is under the same constraint? Specifically, this constraint is that the > /mfsboot file (and hence the DVD) will be read repeatedly if the system > is under memory pressure. No. Contents of mfsboot is loaded into physical memory and always stays there. -- Andriy Gapon
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