Date: Mon, 9 Apr 2001 01:16:02 +0400 (MSD) From: .@babolo.ru To: bra@fsn.hu (Attila Nagy) Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Mounting partitions with RO flag Message-ID: <200104082116.BAA20070@aaz.links.ru> In-Reply-To: <20010408222153.O47272-100000@scribble.fsn.hu> from "Attila Nagy" at "Apr 8, 1 10:24:09 pm"
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Attila Nagy writes: > > > Would it be possible to solve this under FreeBSD? > > I am second for it. > I hope somebody will enlighten my dark mind, because I am really curious > about this :) > > > I am using some partition "magic" and know dark side of it. > What the problem is with it besides the ugly hacking and the small number > of possible partitions? How much partitions do you want? adNs[0..30][a..h] 31*8= 248 if it is low enough, just use vn[0..]s[0..30][a..h] ... with some more dark sides, of cause About dark side: 0garkin~(4)#df Filesystem 1K-blocks Used Avail Capacity Mounted on ... /dev/ad0s2h 7993324 461995 6891864 6% /usr .... /dev/ad0s3a 7993324 441159 6912700 6% /jail/pent/usr .... There is physically the same fs marked as /dev/ad0s2h and /dev/ad0s3a in this example. The /usr is rw mounted and /jail/pent/usr is ro mounted. Do you see a difference? You can really stuck VM system with ro mount that is really rw mount in another mount. Instances of shared fs do not share buffers - which IS a real point - just allow second mount does not solve a problem IMHO The only way of use this method of fs sharing in production is ro mount of any instance and do not upgrade without all jails stopped. And a lot of memory for files buffers :-( -- @BABOLO http://links.ru/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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