I just started with OpenWRT and I found curious the output of df:
root@OpenWrt:/# df -Th
Filesystem Type Size Used Available Use% Mounted on
/dev/root squashfs 4.5M 4.5M 0 100% /rom
tmpfs tmpfs 60.7M 340.0K 60.4M 1% /tmp
/dev/mtdblock9 jffs2 9.0M 5.0M 4.0M 56% /overlay
overlayfs:/overlay overlay 9.0M 5.0M 4.0M 56% /
tmpfs tmpfs 512.0K 0 512.0K 0% /dev
It says the total size for / is 9.0M however I have placed myself a 10.4M folder in it and there is still some space available (4.0M). Is df the recommended tool to check storage in OpenWRT?
root@OpenWrt:/apps# du -sh
It's compressing the content
oh I see. That must explain why I thought writing files to it was a bit slower compared to /tmp. Also is df output referring to uncompressed size?
I would assume it shows the worst case scenario, if something that's uncompressable, like a ZIP, would be put there.
My 2nd guess would be based on current compression ratio.
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