Hello, [sent this to linux-btrfs mailing list but got no answer, maybe this is the better list]. we export a BTRFS-filesystem via NFSv3 and tried to mount this share on a client (also NFSv3). The mount program on the client hangs and the mount fails. Server and client use vanilla Linux kernel 4.0.3, the distro is Ubuntu 14.04.02, btrfs-progs are version 4.0. Exporting of other filesystems (ext4) and mounting them in the exactly same setup works, so this seems to be BTRFS-related. strace-ing the mount-call on the client shows that the mount syscall returns ESTALE errors and mount enters a loop which leads to the hang of the mount-program in user land. I applied the patch of Neil Brown (which should help with NFS v2) in [1]. The behaviour without and with this patch is the same. This seems to be a regression because from the lists I saw that NFS-exporting of BTRFS is supposed to work (but NFSv3 is not explicitely mentioned there). Is this a bug? I am more than willing to help with more diagnosis. Thank you and best regards Ulrich [1] https://lkml.org/lkml/2015/5/7/1013 -- |----------------------------------------------------------------------- | Ulrich Gemkow | University of Stuttgart | Institute of Communication Networks and Computer Engineering (IKR) |----------------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
