Thursday, 25 January 2007

"It's Big"

Experiment visit to ATLAS today. Flip. Tis impressive.

On a more mundane note I discovered this snippet while trying to get our areca raid cards monitored with SNMP on the out of band management


Basically if you want to avoid errors such as
snmpwalk -v1 -c community_name -m ./compile/snmp/areca1.mib mgmtaddress Areca
Bad operator (_): At line 20 in ./compile/snmp/areca1.mib
Areca: Unknown Object Identifier (Sub-id not found: (top) -> Areca)

Then you need to add -Pu to your command line

Friday, 19 January 2007

bash: apt-get: command not found

Minor Rant. There's nothing wrong with Redhat clones, and Scientific Linux is packaged nicely as the rest. However, running a 3.0.5 version on a Laptop, without any decent music (mp3) support when the latest is 4.4 is getting to me. Time... for a swift Ubuntu install.

Monday, 8 January 2007

Transfer tests

OK, so discovered why the transfer tests were failing - I'd done the voms-proxy-init part but omitted the myproxy setup. Doh!

Finally got up n running, then discovered that one of the files was failing with a "550 - not a plain file" the helpful instructions here say

Although it appears in the DPM namespace, the file doesn't physically exist on disk anymore. You should un-register the file from the namespace, to avoid this inconsistency.


Well, that'd be good if they gave a hint as to how to do so. "dpns-rm" didn't seem to work as planned.

On the plus side, it appears our bandwith INTO glasgow is ~650Mb/s shame the outgoing peaked at ~250Mb/s though.

Plotting Lustre MDS stats

At $dayjob we have several large filesystems - for example our /scratch system has 3.1 PB of space using over 1000 HDDs. Although each vendo...