Improper shutdown of system / Fragmentation Problems / Boot logs

[Randy Pratt]

On Wed, 9 Jun 2004 07:05:43 +0800
Robert Storey <y2kbug at ms25.hinet.net> wrote:

> 
> > I am kinda new to FBSD, still kinda learning stuff. Anyway, when my
> > system boots i see all kinda fragmentation information. How do I
> > correct this? Any good reading material? 
> 
> FreeBSD will defragment itself without any action from the user.
> However, defragmentation requires some blank space, and (ideally) you
> should not let any partition get more than 80% full. You can check on
> that with "df -h":

I've been running partitions well over 90% for over six years on
FreeBSD and have not seen any problems with doing so.

Do you have a FreeBSD documentation reference for that 80% figure?

Thanks,

Randy

> bob at sonic:~> df -h
> Filesystem    Size   Used  Avail Capacity  Mounted on
> /dev/ad0s2a   248M    68M   160M    30%    /
> devfs         1.0K   1.0K     0B   100%    /dev
> /dev/ad0s2g   2.4G   281M   1.9G    13%    /home
> /dev/ad0s2e   248M   1.2M   227M     1%    /tmp
> /dev/ad0s2f   8.7G   2.4G   5.6G    30%    /usr
> /dev/ad0s2d   248M    17M   211M     8%    /var
> 
> The column labeled "Capacity" tells you the percentage of space being
> consumed - over 80% would be bad. Note that the "devfs" uses 100% (on
> FBSD 5.x, it doesn't exist on 4.x) - that's no problem, it's not a
> partition and it will always be 100%.
> 
> regards,
> Robert
> 
> 


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