[hobbit] # of filesystems displayed in "disk" column is 1, but 5 in trends column

[Tom Georgoulias]

Henrik Stoerner wrote:
> On Mon, Aug 14, 2006 at 08:41:11AM -0400, Tom Georgoulias wrote:
>> I feel like I've solved this problem before, but if so, I can't remember 
>> how.  :)
>>
>> I'm using some modified versions of the filerstats2bb perl scripts to 
>> collect data from my netapp filers, and ever since my upgrade from 
>> 4.1.2p1 -> 4.2.0, I no longer have 5 filesystems/graph displayed in the 
>> graph under the disk column.  I do have 5/graph in the graph under the 
>> trends column, though.
> 
> The "disk" column tries to count the number of entries in the disk
> status message, and decides how many graphs to include based on that.
> If you do a "view source" on the disk status webpage, you'll see a
> "<!-- linecount:N -->" string showing what count it arrived at.

Yup, I see a linecount of 1.

<!-- linecount=1 -->

> The "trends" column looks at what disk-RRD files exist; if you have some
> filesystems that are not always reported, then there will be RRD-files
> for these, but they will be missing from the disk status message - 
> hence the difference.

I wonder if it is caused by the names of the filesystems in the disk 
report.  Seems like "case DT_NETAPP:" in do_disk.c is capable of 
handling them, although I'm not C code expert.  Here's how the 
filesystems are listed in the disk report:

aggr0
aggr0/.snapshot
aggr0total
/vol/prod01/
/vol/prod01/.snapshot
/vol/prod01/total
/vol/vol0/
/vol/vol0/.snapshot
/vol/vol0/total