dCache Tier I meeting October 19, 2010

[part of a series of meetings]

Present

dCache.org(Owen, Tanja, Paul, Gerd), IN2P3(), Sara(), Triumf(Simon), BNL(), NDGF(Gerd), PIC(), GridKa(), Fermi(), CERN()

Agenda

(see box on the other side)

Site reports

Triumf

OK last week.

NDGF

Same as usual: everything is good.

IN2P3

Transfers from IN2P3 to other sites became bad: a lot of transfers fails. Very slow transfers, so they were killed. Retried

Downgrade operating system to Solaris ??

Situation

Upgraded to 5.10 with some patches: generic 1.92-17

Downgraded to 5.10 generic 142910-17

Downgrade was only on two machines.

Do you use 1GB Ethernet or 10GiB ethernet? A 1GB interface.

All the sites that was to get some insight from

FTS complains about timeouts.

Transfer begins ... timeout happens sometimes between 10% and 90% .. not the same value for different transfers.

Some succeeded, but not all.

Each auth. machine has two

One NIC is connected to the LHC OPN network.

The other is CC-IN2P3 network.

Only WAN transfers are affected.

Incoming data is not affected as it hits different pools.

Have you made tests with IPERF to check the transfer rates? Yes, but it seems to be fine.

Support tickets for discussion

[Items are added here automagically]

 RT 5906: Atlas transfer problem

DTNM

Proposed: same time, next week.