I did a df on my embedded device and saw that the one of the filesystems mentioned was rwfs. What is rwfs ?

Filesystem           1k-blocks      Used Available Use% Mounted on
rwfs                     32768       312     32456   1% /var
  • Does Google help at all here?
    – Oli Charlesworth
    Jun 15 '11 at 0:27
  • 1
    Perhaps the output of the mount(8) command can be enlightening.
    – sarnold
    Jun 15 '11 at 0:40

It's a tmpfs instance, as the output of mount will have told you.


Google helps here... rwfs filesystem


To quote...

RWFS is a filesystem specifically designed to hold large amounts of data(500 Million EB). It accomplishes this by add further dividing disks into large blocks called blocksections. Their size is determined by the block size used

  • 2
    Unless he is running the "Leviathan OS", that link does not seem relevant...
    – Nemo
    Jun 15 '11 at 0:36
  • It's on an (to us) unknown embedded device, so it's a fair enough suggestion. I think the downvote is unwarranted.
    – ocodo
    Jun 15 '11 at 0:42
  • Just for the record, I did not downvote you.
    – Nemo
    Jun 15 '11 at 0:44
  • 1
    I didn't think you did, a driveby-lurker has clearly "great commented" you and downvoted me. Thank you oh wise and constructive lurker.
    – ocodo
    Jun 15 '11 at 0:47
  • you're right, I should have added my own comment when downvoting. My apologies. abc tagged his question with linux, which seemed obvious enough to me. Furthermore, there's no actual source available to download for the Leviathanv OS, making it less likely that a user is even running it. And for an early adopter of a hobby OS to be asking a question here about something only a handful of people in the world could even run seems even less likely.
    – sarnold
    Jun 15 '11 at 0:55

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