[hobbit] Monitoring RAID status

[Dan Vande More]

I'd recommend simply making a new test + script + column name - like
raidstat or something. That way you still get your hobbit graphs, you
still check your disks, and it's compatible between upgrades. This way
it's a logical separation too - disk (space) status and raid status.
If you have a heterogenous network, you could make the extra script
"smart" too, and have it distinguish between devices like I do - one
for Solaris Solstice software mirror, one for IBM ipssend and one for
mdstat.

Just my 2 cents.



On 5/29/06, Henrik Stoerner <henrik at hswn.dk> wrote:
> Hi Thorsten,
>
> On Thu, Apr 13, 2006 at 03:52:33PM +0200, Thorsten.Erdmann at daimlerchrysler.com wrote:
> >
> > I once extended the BigBrothers Disk Script to show a status dot and the
> > sync status of mirrored disks in front of every filesystems status line.
> > Now I migrated to Hobbit. Nearly all works fine but this extension causes
> > the disk graphs to fail. If I understand it right, the do_disk.c program
> > simply reads each line of the status file and displays the fifth column as
> > the disk usage. Since my outfile from the client has two columns in front
> > of each line this fails. The disk usage is now on column seven.
>
> You're reading the code correctly. It's not the optimal way of doing it,
> but it works in most cases.
>
> > I can now alter the C code but that's bad if I ever install a new version
> > of Hobbit. So is there any idea out there how to add data to an output
> > file without disturbing the Hobbit's standard functions.
>
> The optimal solution would be to change the code to look for the column
> header indicating where the used percentage is, so that it would adjust
> to changes in the column layout automatically. However, this is tricky
> to get right with the variations in df output that Hobbit must handle.
>
> I don't have an easy solution for you right now, I'm afraid. Other than
> changing the do_disk code yourself.
>
> > BTW: the disk test on a RedHat Box shows one "graph" to much. It's only a
> > non referenced link, so I think Hobbit tries to interpret things that it
> > cannot read, maybe the title line of the DF commmand's output.
>
> Getting that count of filesystems right is another very difficult excercise.
>
>
> Henrik
>
>
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>