Re: [libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-19 Thread Steve Dickson
On 09/18/2012 10:03 AM, Andrew Holway wrote: Hi Steve, Do you think these patches will make their way into the redhat kernel sometime soon? The process would start by opening a bz at bugzilla.redhat.com... If you like, you can send me the pointer to the bz and I'll make sure it gets

Re: [libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-18 Thread Andrew Holway
Hi Steve, Do you think these patches will make their way into the redhat kernel sometime soon? What is the state of support for NFS over RDMA support at redhat? Thanks, Andrew On Sep 11, 2012, at 7:03 PM, Steve Dickson wrote: On 09/04/2012 05:31 AM, Andrew Holway wrote: Hello. #

Re: [libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-11 Thread Steve Dickson
On 09/04/2012 05:31 AM, Andrew Holway wrote: Hello. # Avi Kivity avi(a)redhat recommended I copy kvm in on this. It would also seem relevent to libvirt. # I have a Centos 6.2 server and Centos 6.2 client. [root@store ~]# cat /etc/exports /dev/shm

Re: [libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-06 Thread Andrew Holway
On Sep 5, 2012, at 4:02 PM, Avi Kivity wrote: On 09/04/2012 03:04 PM, Myklebust, Trond wrote: On Tue, 2012-09-04 at 11:31 +0200, Andrew Holway wrote: Hello. # Avi Kivity avi(a)redhat recommended I copy kvm in on this. It would also seem relevent to libvirt. # I have a Centos 6.2

Re: [libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-06 Thread Myklebust, Trond
On Thu, 2012-09-06 at 12:14 +0200, Andrew Holway wrote: On Sep 5, 2012, at 4:02 PM, Avi Kivity wrote: On 09/04/2012 03:04 PM, Myklebust, Trond wrote: On Tue, 2012-09-04 at 11:31 +0200, Andrew Holway wrote: Hello. # Avi Kivity avi(a)redhat recommended I copy kvm in on this. It would

Re: [libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-05 Thread Avi Kivity
On 09/04/2012 03:04 PM, Myklebust, Trond wrote: On Tue, 2012-09-04 at 11:31 +0200, Andrew Holway wrote: Hello. # Avi Kivity avi(a)redhat recommended I copy kvm in on this. It would also seem relevent to libvirt. # I have a Centos 6.2 server and Centos 6.2 client. [root@store ~]# cat

[libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-04 Thread Andrew Holway
Hello. # Avi Kivity avi(a)redhat recommended I copy kvm in on this. It would also seem relevent to libvirt. # I have a Centos 6.2 server and Centos 6.2 client. [root@store ~]# cat /etc/exports /dev/shm 10.149.0.0/16(rw,fsid=1,no_root_squash,insecure)(I have

Re: [libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-04 Thread Myklebust, Trond
On Tue, 2012-09-04 at 11:31 +0200, Andrew Holway wrote: Hello. # Avi Kivity avi(a)redhat recommended I copy kvm in on this. It would also seem relevent to libvirt. # I have a Centos 6.2 server and Centos 6.2 client. [root@store ~]# cat /etc/exports /dev/shm

Re: [libvirt] NFS over RDMA small block DIRECT_IO bug

2012-09-04 Thread Andrew Holway
That is expected behaviour. DIRECT_IO over RDMA needs to be page aligned so that it can use the more efficient RDMA READ and RDMA WRITE memory semantics (instead of the SEND/RECEIVE channel semantics). Yes, I think I am understanding that now. I need to find a way of getting around the