[Lustre-discuss] Lustre failover to second subnet

2012-11-08 Thread Ed Lucero
I have a lustre test environment. I'm currently testing network failover. Failover works fine on subnet 1. When I turn off subnet 1 on lustre servers. The clients can't recover on to subnet 2. Here is the configuration. All the servers and clients are on the same two subnets. I tried moun

[Lustre-discuss] Lustre failover to second subnet

2012-11-08 Thread Ed Lucero
I have a lustre test environment. I'm currently testing network failover. Failover works fine on subnet 1. When I turn off subnet 1 on lustre servers. The clients can't recover on to subnet 2. Here is the configuration. All the servers and clients are on the same two subnets. I tried moun

[Lustre-discuss] odd pauses when writing

2012-11-08 Thread John White
Good Morning Folks, We're (seemingly suddenly) getting some fairly odd IO pauses of about 20-30 seconds during client writes into one of our file systems (specifically an rsync from an NFS to a Lustre). On the client, we're seeing blocks similar to the following when the pause occurs: N

[Lustre-discuss] Fwd: EIOW meeting on November 15th, 2012 in Salt Lake City

2012-11-08 Thread Kevin Canady
Dear all, I'd like to invite you to the upcoming EIOW meeting on Thursday, November 15th, 2012 in the Salt Lake Marriott Downtown City Creek: http://www.marriott.com/hotels/travel/slcut-salt-lake-marriott-downtown-at-city-creek/ It will be held in the Solitude meeting room which is on the lob

Re: [Lustre-discuss] Lustre - usage / best practices

2012-11-08 Thread Francois Chassaing
Hi, about your DB usage of the Lustre FS, I would strongly advise you to follow Andreas advice and test first. Note also that you must use a recent Percona-released MySQL to avoid a nasty POSIX-related bug in Innodb that crashes MySQL... In my case, performance showed to be dramatically insuffic