I have been experimenting exporting btrfs subvolumes over nfs. Main subvolume is filesys1 mounted at /filesys1. Below this is subvolume base, user1 is in base and documents is in user1. documents is mounted at /documents. /etc/exports is: /filesys1/base/user1 172.16.0.0/24(rw,no_acl,no_root_squash,fsid=0) /filesys1/user1-snapshot 172.16.0.0/24(rw,no_acl,no_root_squash,fsid=0) /documents 172.16.0.0/24(rw,no_acl,no_root_squash,fsid=0)
On the client machine I mount user1 as /mnt/user and all data from user is present. I can also umount /mnt/usr and mount /documents as /mnt/documents and all data is present. However, if I mount user1 as /mnt/user and then mount /documents as /mnt/documents the data from the last subvolume mounted shows in both mounts. Mount also shows: 172.16.0.28:/documents/ on /mnt/user type nfs (rw,relatime,vers=3,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.16.0.28,mountvers=3,mountport=892,mountproto=udp,local_lock=none,addr=172.16.0.28) 172.16.0.28:/documents/ on /mnt/documents type nfs (rw,relatime,vers=3,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.16.0.28,mountvers=3,mountport=892,mountproto=udp,local_lock=none,addr=172.16.0.28) The initial mount of user1 on /mnt/user showed correctly in mount. Mount changes when I add the mount for /documents. I don't know how to troubleshoot this. I am happy to provide any info which can help. Btrfs is currently on a centOS6 machine running kernel 3.0.1 with btrfs-progs from git unstable. NFS is v3 on both server and client and the client is Fedora 15 kernel 2.6.40-4.fc15.x86_64 Thanks Jim Maloney -- Jim Maloney email - j...@webstarts.com -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
