[Gluster-users] error: "Transport endpoint is not connected" and "Stale NFS file handle"

José Manuel Canelas jcanelas at co.sapo.pt
Fri Feb 26 15:55:35 UTC 2010

Hello, everyone.

We're setting up GlusterFS for some testing and having some trouble with
the configuration.

We have 4 nodes as clients and servers, 4 disks each. I'm trying to
setup 3 replicas across all those 16 disks, configured at the client
side, for high availability and optimal performance, in a way that makes
it easy to add new disks and nodes.

The best way I thought doing it was to put disks together from different
nodes into 3 distributed volumes and then use each of those as a replica
of the top volume. I'd like your input on this too, so if you look at
the configuration and something looks wrong or dumb, it probably is, so
please let me know :)

Now the server config looks like this:

volume posix1
  type storage/posix
  option directory /srv/gdisk01

volume locks1
    type features/locks
    subvolumes posix1

volume brick1
    type performance/io-threads
    option thread-count 8
    subvolumes locks1

[4 more identical bricks and...]

volume server-tcp
    type protocol/server
    option transport-type tcp
    option auth.addr.brick1.allow *
    option auth.addr.brick2.allow *
    option auth.addr.brick3.allow *
    option auth.addr.brick4.allow *
    option transport.socket.listen-port 6996
    option transport.socket.nodelay on
    subvolumes brick1 brick2 brick3 brick4

The client config:

volume node01-1
    type protocol/client
    option transport-type tcp
    option remote-host node01
    option transport.socket.nodelay on
    option transport.remote-port 6996
    option remote-subvolume brick1

[repeated for every brick, until node04-4]

### Our 3 replicas
volume repstore1
    type cluster/distribute
    subvolumes node01-1 node02-1 node03-1 node04-1 node04-4

volume repstore2
    type cluster/distribute
    subvolumes node01-2 node02-2 node03-2 node04-2 node02-2

volume repstore3
    type cluster/distribute
    subvolumes node01-3 node02-3 node03-3 node04-3 node03-3

volume replicate
    type cluster/replicate
    subvolumes repstore1 repstore2 repstore3

[and then the performance bits]

When starting the glusterfs server, everything looks fine. I then mount
the filesystem with

node01:~# glusterfs --debug -f /etc/glusterfs/glusterfs.vol

and it does not complain and shows up as properly mounted. When
accessing the content, it gives back an error, that the "Transport
endpoint is not connected". The log has a "Stale NFS file handle"
warning. See bellow:

[2010-02-26 14:56:01] D [dht-common.c:274:dht_revalidate_cbk] repstore3:
mismatching layouts for /
[2010-02-26 14:56:01] W [fuse-bridge.c:722:fuse_attr_cbk]
glusterfs-fuse: 9: LOOKUP() / => -1 (Stale NFS file handle)

node01:~# mount
/dev/cciss/c0d0p1 on / type ext3 (rw,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
/dev/cciss/c0d1 on /srv/gdisk01 type ext3 (rw,errors=remount-ro)
/dev/cciss/c0d2 on /srv/gdisk02 type ext3 (rw,errors=remount-ro)
/dev/cciss/c0d3 on /srv/gdisk03 type ext3 (rw,errors=remount-ro)
/dev/cciss/c0d4 on /srv/gdisk04 type ext3 (rw,errors=remount-ro)
/etc/glusterfs/glusterfs.vol on /srv/gluster-export type fuse.glusterfs
node01:~# ls /srv/gluster-export
ls: cannot access /srv/gluster-export: Transport endpoint is not connected

The complete debug log and configuration files are attached.

Thank you in advance,
José Canelas

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