[Voyage-linux] Re: check/repair fs

[Raimund Berger]

"Raimund Berger"
<raimund.berger-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> writes:

> "Robert Rawlins - Think Blue"
> <robert.rawlins-EBmHtJ59PSbN/KKgT+RXvNBc4/FLrbF6-XMD5yJDbdMReXY1tMh2IBg at public.gmane.org>
> writes:
>
>> Hey Gustin,
>>
>> Well I tied with the b command argument and get the following output:
>>
>> voyage:/# du -Pacbx --max-depth=1 . |sort -g
>> 0       ./proc
>
> [snip]
>
>> 646143009       total
>>
>> Appears to be very much the same story, 600 off mb used but obviously
>> something isnt right. This system is out in the field so I currently
>> have no way of placing the card into another system to check it. I'd
>> like to avoid having to go and do any manual maintenance on the system
>> if possible.
>>
>> Cheers,
>>
>> Rob
>
> Just an idea: before running 'du' you might want to issue a
> 'remountrw'. Logic tells me that the mounted tmpfs might be hiding
> something which is stored on the real disk and thus escapes 'du'.
>
> For example the /tmp directory could be loaded with stuff on the disk
> you won't see right now due to the tmpfs being mounted over it.
>
> Regards, R.

Addition:

just came to think, 'remountrw' won't suffice.

You'd need to get rid of the /rw tmpfs mount, which will likely be busy
though. Only way around that would be shutting down all processes which
access it (or one of the symbolic links pointing to it, like /tmp) and
then unmount it.

Those processes can found with 'lsof', which hopefully is already
installed on your system. An alternative is 'fuser'.

Good luck, R.