Friday, 1 June 2007


OK, I'll admit I occasionally rant about some things I consider "bad", but I'm afraid deleting files from grid storage is just Painful.

to delete 490 (I nuked the first ten within the inner $i loop as a test of xargs) files I ended up with this nasty nasty hack:
for j in `seq -w 2 49 ` ; do for i in 0 1 2 3 4 5 6 7 8 9 ; do echo -n "srm://$DPM_HOST:8443/dpm/$j$i " ; done ; done | xargs srm-advisory-delete

I mean, even altering for a `seq -w 20 499` single loop, just, well, is Bad and Wrong[*]


Mind you, it worked, as demonstrated by Paul's MonAMI plot of dteam storage use:

Wednesday, 30 May 2007

iperf between Gla-Bristol

In preparation for some serious testing of Bristol's StoRM implementation, Jon and I worked together to run some iperf tests so we know what our target is for FTS tests. Plot below - looks like we've got a 500Mb/s maximum.