deleted file using memory

kkpal · 04-07-2008, 01:29 AM

Hi all
I am booting Linux from CF card. When I am deleting any file, file is deleted but memory not get free.
output of df -h
Filesystem Size Used Available Use% Mounted on
/dev/hda1 244.0M 231.6M 12.4M 95% /initrd/mnt/dev_ro1

How can I solve this problem?

Thanks & Regards
KKPal

Tinkster · 04-07-2008, 02:16 AM

What version of Linux is this? To me the /initrd/mnt/dev_ro1
suspiciously looks like /dev_ReadOnly1 ... which would explain
the inability to delete stuff (maybe it copies stuff into RAM
and your deletion only takes place there?) ....

Cheers,
Tink

matthewg42 · 04-07-2008, 04:12 AM

initrd often uses cramfs or romfs. These filesystems do not support deletion since they are special purpose filesystems, used when that is not usually a desired operation. The optimisations (size, simplicity, speed, compression capability and so on) gained by not implementing such functions are worth the limitation.