I have a simple embedded setup as follows: x86 target, kernel and root file system built using buildroot. Syslinux is the bootloader configured to boot with an initramfs which points to a .cpio file generated from the buildroot generated root file system. My system boots and works as I am expecting, but I am confused as to what happens with the entries contained in /etc/fstab. I would like my system to be able to mount the /var directory as a partition on an attached compact flash device for various reasons (mainly because I want to be able to store and run an application on the compact flash and additionally store log data here). Is it possible to use an initramfs and yet mount /var on device outside of RAM? If that is the case, is /etc/fstab the correct place to configure this?
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1 Answer
Any directory path can have any (valid) volume mounted to it. Whether or not /etc/fstab is the correct place to put it depends on whether or not your embedded setup even uses it.
answered Jan 25, 2013 at 16:25
Ignacio Vazquez-Abrams
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Thanks for your answer. Is there an easy way for me to find out if /etc/fstab is being used by my setup? I am not an expert in linux unfortunately.mathematician1975– mathematician19752013-01-25 18:42:01 +00:00Commented Jan 25, 2013 at 18:42
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Nope. You'll need to investigate the startup scripts to see how they use
mountto bring filesystems up.Ignacio Vazquez-Abrams– Ignacio Vazquez-Abrams2013-01-25 18:45:38 +00:00Commented Jan 25, 2013 at 18:45 -
@mathematician1975 I dare say the easy way to find out is to add something to
/etc/fstaband see if it works.derobert– derobert2013-01-25 19:37:10 +00:00Commented Jan 25, 2013 at 19:37 -
@IgnacioVazquez-Abrams Ok I will try that. Thanks very much for your help.mathematician1975– mathematician19752013-01-25 20:48:48 +00:00Commented Jan 25, 2013 at 20:48