[mythtv-users] disk usage weirdness
Dennis Lou
dlou99 at yahoo.com
Fri Apr 23 10:45:04 EDT 2004
From: Henk Poley <hpoley at dds.nl>
>Op vrijdag 23 april 2004 05:37, schreef Dennis Lou:
>> I noticed that the backend status reports disk
>> usage differently than df.
>>
>> This is what mythbackend reports:
>> Disk Usage:
>> * Total Space: 54,218 MB
>> * Space Used: 49,745 MB
>> * Space Free: 4,473 MB
>>
>> and this is what df -h reports:
>> [root at localhost /]# df -h
>> Filesystem Size Used Avail Use% Mounted
on
>> /dev/hda2 56G 46G 7.3G 87% /
>> /dev/hda1 99M 14M 80M 15% /boot
>> none 125M 0 125M 0%
/dev/shm
>
>Linux automagicaly reserves some space to keep
>fragmentation low. Only root
>can use that (that's why df as root reports the full
>free space). It has been
>on the list before. There's also some command to
>disable this barrier for
>normal users also (don't know if that's smart
though).
Hm, hadn't seen it on the list before...
In any case, df as root gives the same result as
df as normal user:
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda2 56G 48G 5.8G 90% /
/dev/hda1 99M 14M 80M 15% /boot
none 125M 0 125M 0% /dev/shm
$ su
Password:
[root at localhost dlou]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda2 56G 48G 5.8G 90% /
/dev/hda1 99M 14M 80M 15% /boot
none 125M 0 125M 0% /dev/shm
Even if you do the math and adjust by 5%, it still
doesn't add up. Space used is space used. No
matter the reserve, that particular figure
shouldn't be different.
Then there's this weirdness:
# du -sh /
30G /
-Dennis
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