Public bug reported: I have a KVM host and a guest (VM), both with Ubuntu 14,04 I want to mount a filesystem from the host by the VM via 9p. When using the setup described in http://www.linux-kvm.org/page/9p_virtio I can mount the host directory:
root@flupp:/# mount | grep /spool_ /spool_mapped on /spool_mapped type 9p (rw,trans=virtio,version=9p2000.L) /spool_passthrough on /spool_passthrough type 9p (rw,trans=virtio,version=9p2000.L) /spool_squash on /spool_squash type 9p (rw,trans=virtio,version=9p2000.L) but when I try to access files I get errors: root@flupp:/# ls -ld /spool_*/xx* ls: cannot read symbolic link /spool_mapped/xx2: Too many levels of symbolic links drwx------ 1 fex fex 4 May 28 18:28 /spool_mapped/xx1 lrwxrwxrwx 1 fex fex 3 May 28 13:56 /spool_mapped/xx2 drwx------ 1 fex fex 4 May 28 18:28 /spool_passthrough/xx1 lrwxrwxrwx 1 fex fex 3 May 28 13:56 /spool_passthrough/xx2 -> xx1 drwx------ 1 fex fex 4 May 28 18:28 /spool_squash/xx1 lrwxrwxrwx 1 fex fex 3 May 28 13:56 /spool_squash/xx2 -> xx1 root@flupp:/# ls -l /spool_*/xx1 ls: cannot open directory /spool_mapped/xx1: Permission denied ls: cannot open directory /spool_passthrough/xx1: Permission denied ls: cannot open directory /spool_squash/xx1: Permission denied root@flupp:/# id uid=0(root) gid=0(root) groups=0(root) When I use nfs instead of 9p everything looks ok: root@flupp:/# mount | grep spool.*nfs kvmhost:/data/fex/spool on /spool type nfs (rw,relatime,nfsvers=3,proto=udp,addr=192.168.254.1) root@flupp:/spool# ls -ld /spool/xx1/* -rw------- 1 fex fex 77096 May 28 13:56 /spool/xx1/xx root@flupp:/spool# wc /spool/xx1/xx 1252 6264 77096 /spool/xx1/xx ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1460629 Title: no access with 9p qemu-kvm filesystem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1460629/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs