On Wed, 2009-06-17 at 12:31 +0200, Andreas Jaeger wrote:

On Wednesday 17 June 2009 12:25:20 Roger Oberholtzer wrote:

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I know this is a strange question, but here goes:

I have three partitions. One is /home. The other two are different versions of openSUSE. I boot one of them (obviously). I then mount the other version as /otheros.

The thing is, I want to access /home as /home from the booted OS (that works) as well as the other mounted OS. I chroot to the other OS mount point when this is needed.

I guess the following works: mount --bind /home /otheros/home

see man mount (8) for details about --bind.

The same I do for /proc and /dev already in chroots: mount --bind /proc /otheros/proc

Hmm. I mount the /proc in my chroot, but without the --bind Nonetheless, this did the trick. Thanks! -- Roger Oberholtzer OPQ Systems / Ramböll RST Ramböll Sverige AB Krukmakargatan 21 P.O. Box 17009 SE-104 62 Stockholm, Sweden Office: Int +46 8-615 60 20 Mobile: Int +46 70-815 1696 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Thu, 2009-06-18 at 11:38 +0200, Philipp Thomas wrote:

On Wed, 17 Jun 2009 12:55:12 +0200, you wrote:

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Hmm. I mount the /proc in my chroot, but without the --bind

Which isn't a very good idea. Binding mounts are the only clean way to mount something multiple times in different places.

I have this methodology from a few years back when I was using Gentoo. I am sure things have changed since then. I have updated my docs to match this improved information. -- Roger Oberholtzer OPQ Systems / Ramböll RST Ramböll Sverige AB Krukmakargatan 21 P.O. Box 17009 SE-104 62 Stockholm, Sweden Office: Int +46 8-615 60 20 Mobile: Int +46 70-815 1696 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Thu, 2009-06-18 at 09:18 -0500, Boyd Stephen Smith Jr. wrote:

In , Philipp Thomas wrote:

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On Wed, 17 Jun 2009 12:55:12 +0200, you wrote:

...

Hmm. I mount the /proc in my chroot, but without the --bind Which isn't a very good idea. Binding mounts are the only clean way to mount something multiple times in different places.

From what I understand, that's not true of the "sysfs" and "proc" (and a few other) virtual file systems. They can be mounted as many times as needed without the use of --bind.

It would sort of make sense, as /proc is read-only, right? -- Roger Oberholtzer OPQ Systems / Ramböll RST Ramböll Sverige AB Krukmakargatan 21 P.O. Box 17009 SE-104 62 Stockholm, Sweden Office: Int +46 8-615 60 20 Mobile: Int +46 70-815 1696 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

On Thu, 2009-06-18 at 10:10 -0500, Boyd Stephen Smith Jr. wrote:

In <1245335778.4725.75.camel@acme.pacific>, Roger Oberholtzer wrote:

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It would sort of make sense, as /proc is read-only, right?

Not at all, but reads/writes to "files" in proc are handled not by reading/writing the bits from/to some medium, but rather receiving/presenting them from/to specific kernel functions.

In particular, there are still a number of tunable parameters under /proc/sys, IIRC.

I thought the things in /proc that were for system tuning and all were moved out of /proc. I confess that I have had less need for this these days, so I have not kept current on it. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org