Re: NFS-RDMA hangs: connection closed (-103)

2010-12-09 Thread Tom Tucker
On 12/8/10 9:10 AM, Spelic wrote: Tom, have you reproduced the "RDMA hangs - connection closes" bug or the "sparse file at server side upon NFS hitting ENOSPC" ? Because for the latter people have already given exhaustive explanation: see this other thread at http://fossplanet.com/f13/%5Blinu

Re: NFS-RDMA hangs: connection closed (-103)

2010-12-08 Thread Spelic
Tom, have you reproduced the "RDMA hangs - connection closes" bug or the "sparse file at server side upon NFS hitting ENOSPC" ? Because for the latter people have already given exhaustive explanation: see this other thread at http://fossplanet.com/f13/%5Blinux-lvm%5D-bugs-mkfs-xfs-device-mappe

Re: NFS-RDMA hangs: connection closed (-103)

2010-12-07 Thread Tom Tucker
Status update... I have reproduced the bug a number of different ways. It seems to be most easily reproduced by simply writing more data than the filesystem has space for. I can do this reliably with any FS. I think the XFS bug may have tickled this bug somehow. Tom On 12/2/10 1:09 PM, Spel

Re: NFS-RDMA hangs: connection closed (-103)

2010-12-02 Thread Spelic
Hello all please be aware that the "file oversize" bug is reproducible also without infiniband, with just nfs over ethernet over xfs over ramdisk (but it doesn't hang, so it's a different bug than the one I posted here at the RDMA mailing list) I have posted another thread regarding the "file o

Re: NFS-RDMA hangs: connection closed (-103)

2010-12-02 Thread Roland Dreier
Adding Dave Chinner to the cc list, since he's both an XFS guru as well as being very familiar with NFS and RDMA... Dave, if you read below, it seems there is some strange behavior exporting XFS with NFS/RDMA. - R. > On 12/02/2010 12:59 AM, Tom Tucker wrote: > > Spelic, > > > > I have seen

Re: NFS-RDMA hangs: connection closed (-103)

2010-12-02 Thread Spelic
On 12/02/2010 12:59 AM, Tom Tucker wrote: Spelic, I have seen this problem before, but have not been able to reliably reproduce it. When I saw the problem, there were no transport errors and it appeared as if the I/O had actually completed, but that the waiter was not being awoken. I was not

Re: NFS-RDMA hangs: connection closed (-103)

2010-12-01 Thread Tom Tucker
Spelic, I have seen this problem before, but have not been able to reliably reproduce it. When I saw the problem, there were no transport errors and it appeared as if the I/O had actually completed, but that the waiter was not being awoken. I was not able to reliably reproduce the problem and

Re: NFS-RDMA hangs: connection closed (-103)

2010-12-01 Thread Tom Tucker
Hi Spelic, Can you reproduce this with an nfsv3 mount? On 12/1/10 5:13 PM, Spelic wrote: Hello all First of all: I have tried to send this message to the list at least 3 times but it doesn't seem to get through (and I'm given no error back). It was very long with 2 attachments... is is becaus

NFS-RDMA hangs: connection closed (-103)

2010-12-01 Thread Spelic
Hello all First of all: I have tried to send this message to the list at least 3 times but it doesn't seem to get through (and I'm given no error back). It was very long with 2 attachments... is is because of that? What are the limits of this ML? This time I will shorten it a bit and remove th