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Topic: Adding files permanently to be loaded in ram, Sorry, another newbie here...

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bib_ak

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Posts: 7
Joined: July 2007

Posted: July 04 2007,12:50

I need a binary file to be present in RAM at every boot, in the read only fileformat under /bin, and a symlink in /lib as well...

Does this require a remaster of DSL? It seems a little difficult for a newbie - are there a better way?

btw, great product this distro

^thehatsrule^ Offline

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Posts: 3275
Joined: July 2006

Posted: July 04 2007,13:51

/bin ? maybe you meant /usr/bin, etc?

Remastering the image will only be in ram if you boot with toram, or else your best bet would just to make a .dsl extension.

Of course you could just copy your binary and libs manually (you'll probably need to run mkwriteable manually as well though)

mikshaw

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Joined: July 2004

Posted: July 04 2007,20:59

If you don't want to run mkwriteable, which adds a slew of syminks to /ramdisk from /usr, /bin, /lib, and /sbin, the bin file could be added to /opt/bin. I don't think there is a writable lib directory in DSL without running mkwriteable, though, so for this file you'll either need to run mkwriteable (automatically done when installing a *.dsl file), or modify your LD_LIBRARY_PATH variable to include the new lib directory.

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http://www.tldp.org/LDP/intro-linux/html/index.html

bib_ak

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Posts: 7
Joined: July 2007

Posted: July 05 2007,08:56

Alright, let me try to explain better what I try to do:

The application I want to run consist of one binary file, and one config file. It also requires libcrypto.so.0.9.8 in /lib. This library does exist in DSL, but as an earlier version - libcrypto.so.0.9.7. Though, this version works just fine for my needs, I can simply

Code Sample

ln /usr/lib/libcrypto.so.0.9.7 /lib/libcrypto.so.0.9.8

As for the file ment to be in /bin directory, I have found a way to specify a different location for it, so the only thing for me to do is "faking" the existence of /lib/libcrypto.so.0.9.8

Is this a difficult task?

bib_ak

Group: Members
Posts: 7
Joined: July 2007

Posted: July 05 2007,09:20

Additional info, slightly offtoptic, but for what it's worth:

I am booting from a CF card, using an old Neoware thinclient (Eon 2000) as hardware. Nice power from a 300MHz Geode CPU ;) Seriously, it runs very smooth at maximum total power consumption of 15W! 128MB SD-RAM. No fans

I may have caused confusion when mixing ramdisk with RO directories, sorry. I see now that only the directories /home, /opt and /var are on ramdisk, and of course that's what makes them RW. Which is making my thread title completely wrong. But it's impossible for me to change it...

7 replies since July 04 2007,12:50

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