On 4/9/2018 2:45 AM, Alex K wrote:
Hey Alex,

With two nodes, the setup works but both sides go down when one node is missing. Still I set the below two params to none and that solved my issue:

cluster.quorum-type: none
cluster.server-quorum-type: none

Thank you for that.

Cheers,
Tom

Hi,

You need 3 nodes at least to have quorum enabled. In 2 node setup you need to disable quorum so as to be able to still use the volume when one of the nodes go down.

On Mon, Apr 9, 2018, 09:02 TomK <tomk...@mdevsys.com <mailto:tomk...@mdevsys.com>> wrote:

    Hey All,

    In a two node glusterfs setup, with one node down, can't use the second
    node to mount the volume.  I understand this is expected behaviour?
    Anyway to allow the secondary node to function then replicate what
    changed to the first (primary) when it's back online?  Or should I just
    go for a third node to allow for this?

    Also, how safe is it to set the following to none?

    cluster.quorum-type: auto
    cluster.server-quorum-type: server


    [root@nfs01 /]# gluster volume start gv01
    volume start: gv01: failed: Quorum not met. Volume operation not
    allowed.
    [root@nfs01 /]#


    [root@nfs01 /]# gluster volume status
    Status of volume: gv01
Gluster process                             TCP Port  RDMA Port Online  Pid
    
------------------------------------------------------------------------------
Brick nfs01:/bricks/0/gv01                  N/A       N/A        N      N/A
    Self-heal Daemon on localhost               N/A       N/A        Y
    25561

    Task Status of Volume gv01
    
------------------------------------------------------------------------------
    There are no active volume tasks

    [root@nfs01 /]#


    [root@nfs01 /]# gluster volume info

    Volume Name: gv01
    Type: Replicate
    Volume ID: e5ccc75e-5192-45ac-b410-a34ebd777666
    Status: Started
    Snapshot Count: 0
    Number of Bricks: 1 x 2 = 2
    Transport-type: tcp
    Bricks:
    Brick1: nfs01:/bricks/0/gv01
    Brick2: nfs02:/bricks/0/gv01
    Options Reconfigured:
    transport.address-family: inet
    nfs.disable: on
    performance.client-io-threads: off
    nfs.trusted-sync: on
    performance.cache-size: 1GB
    performance.io-thread-count: 16
    performance.write-behind-window-size: 8MB
    performance.readdir-ahead: on
    client.event-threads: 8
    server.event-threads: 8
    cluster.quorum-type: auto
    cluster.server-quorum-type: server
    [root@nfs01 /]#




    ==> n.log <==
    [2018-04-09 05:08:13.704156] I [MSGID: 100030] [glusterfsd.c:2556:main]
    0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version
    3.13.2 (args: /usr/sbin/glusterfs --process-name fuse
    --volfile-server=nfs01 --volfile-id=/gv01 /n)
    [2018-04-09 05:08:13.711255] W [MSGID: 101002]
    [options.c:995:xl_opt_validate] 0-glusterfs: option 'address-family' is
    deprecated, preferred is 'transport.address-family', continuing with
    correction
    [2018-04-09 05:08:13.728297] W [socket.c:3216:socket_connect]
    0-glusterfs: Error disabling sockopt IPV6_V6ONLY: "Protocol not
    available"
    [2018-04-09 05:08:13.729025] I [MSGID: 101190]
    [event-epoll.c:613:event_dispatch_epoll_worker] 0-epoll: Started thread
    with index 1
    [2018-04-09 05:08:13.737757] I [MSGID: 101190]
    [event-epoll.c:613:event_dispatch_epoll_worker] 0-epoll: Started thread
    with index 2
    [2018-04-09 05:08:13.738114] I [MSGID: 101190]
    [event-epoll.c:613:event_dispatch_epoll_worker] 0-epoll: Started thread
    with index 3
    [2018-04-09 05:08:13.738203] I [MSGID: 101190]
    [event-epoll.c:613:event_dispatch_epoll_worker] 0-epoll: Started thread
    with index 4
    [2018-04-09 05:08:13.738324] I [MSGID: 101190]
    [event-epoll.c:613:event_dispatch_epoll_worker] 0-epoll: Started thread
    with index 5
    [2018-04-09 05:08:13.738330] I [MSGID: 101190]
    [event-epoll.c:613:event_dispatch_epoll_worker] 0-epoll: Started thread
    with index 6
    [2018-04-09 05:08:13.738655] I [MSGID: 101190]
    [event-epoll.c:613:event_dispatch_epoll_worker] 0-epoll: Started thread
    with index 7
    [2018-04-09 05:08:13.738742] I [MSGID: 101190]
    [event-epoll.c:613:event_dispatch_epoll_worker] 0-epoll: Started thread
    with index 8
    [2018-04-09 05:08:13.739460] W [MSGID: 101174]
    [graph.c:363:_log_if_unknown_option] 0-gv01-readdir-ahead: option
    'parallel-readdir' is not recognized
    [2018-04-09 05:08:13.739787] I [MSGID: 114020] [client.c:2360:notify]
    0-gv01-client-0: parent translators are ready, attempting connect on
    transport
    [2018-04-09 05:08:13.747040] W [socket.c:3216:socket_connect]
    0-gv01-client-0: Error disabling sockopt IPV6_V6ONLY: "Protocol not
    available"
    [2018-04-09 05:08:13.747372] I [MSGID: 114020] [client.c:2360:notify]
    0-gv01-client-1: parent translators are ready, attempting connect on
    transport
    [2018-04-09 05:08:13.747883] E [MSGID: 114058]
    [client-handshake.c:1571:client_query_portmap_cbk] 0-gv01-client-0:
    failed to get the port number for remote subvolume. Please run 'gluster
    volume status' on server to see if brick process is running.
    [2018-04-09 05:08:13.748026] I [MSGID: 114018]
    [client.c:2285:client_rpc_notify] 0-gv01-client-0: disconnected from
    gv01-client-0. Client process will keep trying to connect to glusterd
    until brick's port is available
    [2018-04-09 05:08:13.748070] W [MSGID: 108001]
    [afr-common.c:5391:afr_notify] 0-gv01-replicate-0: Client-quorum is
    not met
    [2018-04-09 05:08:13.754493] W [socket.c:3216:socket_connect]
    0-gv01-client-1: Error disabling sockopt IPV6_V6ONLY: "Protocol not
    available"
    Final graph:
    
+------------------------------------------------------------------------------+
        1: volume gv01-client-0
        2:     type protocol/client
        3:     option ping-timeout 42
        4:     option remote-host nfs01
        5:     option remote-subvolume /bricks/0/gv01
        6:     option transport-type socket
        7:     option transport.address-family inet
        8:     option username 916ccf06-dc1d-467f-bc3d-f00a7449618f
        9:     option password a44739e0-9587-411f-8e6a-9a6a4e46156c
       10:     option event-threads 8
       11:     option transport.tcp-user-timeout 0
       12:     option transport.socket.keepalive-time 20
       13:     option transport.socket.keepalive-interval 2
       14:     option transport.socket.keepalive-count 9
       15:     option send-gids true
       16: end-volume
       17:
       18: volume gv01-client-1
       19:     type protocol/client
       20:     option ping-timeout 42
       21:     option remote-host nfs02
       22:     option remote-subvolume /bricks/0/gv01
       23:     option transport-type socket
       24:     option transport.address-family inet
       25:     option username 916ccf06-dc1d-467f-bc3d-f00a7449618f
       26:     option password a44739e0-9587-411f-8e6a-9a6a4e46156c
       27:     option event-threads 8
       28:     option transport.tcp-user-timeout 0
       29:     option transport.socket.keepalive-time 20
       30:     option transport.socket.keepalive-interval 2
       31:     option transport.socket.keepalive-count 9
       32:     option send-gids true
       33: end-volume
       34:
       35: volume gv01-replicate-0
       36:     type cluster/replicate
       37:     option afr-pending-xattr gv01-client-0,gv01-client-1
       38:     option quorum-type auto
       39:     option use-compound-fops off
       40:     subvolumes gv01-client-0 gv01-client-1
       41: end-volume
       42:
       43: volume gv01-dht
       44:     type cluster/distribute
       45:     option lock-migration off
       46:     subvolumes gv01-replicate-0
       47: end-volume
       48:
       49: volume gv01-write-behind
       50:     type performance/write-behind
       51:     option cache-size 8MB
       52:     subvolumes gv01-dht
       53: end-volume
       54:
       55: volume gv01-read-ahead
       56:     type performance/read-ahead
       57:     subvolumes gv01-write-behind
       58: end-volume
       59:
       60: volume gv01-readdir-ahead
       61:     type performance/readdir-ahead
       62:     option parallel-readdir off
       63:     option rda-request-size 131072
       64:     option rda-cache-limit 10MB
       65:     subvolumes gv01-read-ahead
       66: end-volume
       67:
       68: volume gv01-io-cache
       69:     type performance/io-cache
       70:     option cache-size 1GB
       71:     subvolumes gv01-readdir-ahead
       72: end-volume
       73:
       74: volume gv01-quick-read
       75:     type performance/quick-read
       76:     option cache-size 1GB
       77:     subvolumes gv01-io-cache
       78: end-volume
       79:
       80: volume gv01-open-behind
       81:     type performance/open-behind
       82:     subvolumes gv01-quick-read
       83: end-volume
       84:
       85: volume gv01-md-cache
       86:     type performance/md-cache
       87:     subvolumes gv01-open-behind
       88: end-volume
       89:
       90: volume gv01
       91:     type debug/io-stats
       92:     option log-level INFO
       93:     option latency-measurement off
       94:     option count-fop-hits off
       95:     subvolumes gv01-md-cache
       96: end-volume
       97:
       98: volume meta-autoload
       99:     type meta
    100:     subvolumes gv01
    101: end-volume
    102:
    
+------------------------------------------------------------------------------+
    [2018-04-09 05:08:13.922631] E [socket.c:2374:socket_connect_finish]
    0-gv01-client-1: connection to 192.168.0.119:24007
    <http://192.168.0.119:24007> failed (No route to
    host); disconnecting socket
    [2018-04-09 05:08:13.922690] E [MSGID: 108006]
    [afr-common.c:5164:__afr_handle_child_down_event] 0-gv01-replicate-0:
    All subvolumes are down. Going offline until atleast one of them comes
    back up.
    [2018-04-09 05:08:13.926201] I [fuse-bridge.c:4205:fuse_init]
    0-glusterfs-fuse: FUSE inited with protocol versions: glusterfs 7.24
    kernel 7.22
    [2018-04-09 05:08:13.926245] I [fuse-bridge.c:4835:fuse_graph_sync]
    0-fuse: switched to graph 0
    [2018-04-09 05:08:13.926518] I [MSGID: 108006]
    [afr-common.c:5444:afr_local_init] 0-gv01-replicate-0: no subvolumes up
    [2018-04-09 05:08:13.926671] E [MSGID: 101046]
    [dht-common.c:1501:dht_lookup_dir_cbk] 0-gv01-dht: dict is null
    [2018-04-09 05:08:13.926762] E [fuse-bridge.c:4271:fuse_first_lookup]
    0-fuse: first lookup on root failed (Transport endpoint is not
    connected)
    [2018-04-09 05:08:13.927207] I [MSGID: 108006]
    [afr-common.c:5444:afr_local_init] 0-gv01-replicate-0: no subvolumes up
    [2018-04-09 05:08:13.927262] E [MSGID: 101046]
    [dht-common.c:1501:dht_lookup_dir_cbk] 0-gv01-dht: dict is null
    [2018-04-09 05:08:13.927301] W
    [fuse-resolve.c:132:fuse_resolve_gfid_cbk] 0-fuse:
    00000000-0000-0000-0000-000000000001: failed to resolve (Transport
    endpoint is not connected)
    [2018-04-09 05:08:13.927339] E [fuse-bridge.c:900:fuse_getattr_resume]
    0-glusterfs-fuse: 2: GETATTR 1 (00000000-0000-0000-0000-000000000001)
    resolution failed
    [2018-04-09 05:08:13.931497] I [MSGID: 108006]
    [afr-common.c:5444:afr_local_init] 0-gv01-replicate-0: no subvolumes up
    [2018-04-09 05:08:13.931558] E [MSGID: 101046]
    [dht-common.c:1501:dht_lookup_dir_cbk] 0-gv01-dht: dict is null
    [2018-04-09 05:08:13.931599] W
    [fuse-resolve.c:132:fuse_resolve_gfid_cbk] 0-fuse:
    00000000-0000-0000-0000-000000000001: failed to resolve (Transport
    endpoint is not connected)
    [2018-04-09 05:08:13.931623] E [fuse-bridge.c:900:fuse_getattr_resume]
    0-glusterfs-fuse: 3: GETATTR 1 (00000000-0000-0000-0000-000000000001)
    resolution failed
    [2018-04-09 05:08:13.937258] I [fuse-bridge.c:5093:fuse_thread_proc]
    0-fuse: initating unmount of /n
    [2018-04-09 05:08:13.938043] W [glusterfsd.c:1393:cleanup_and_exit]
    (-->/lib64/libpthread.so.0(+0x7e25) [0x7fb80b05ae25]
    -->/usr/sbin/glusterfs(glusterfs_sigwaiter+0xe5) [0x560b52471675]
    -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x560b5247149b] ) 0-:
    received signum (15), shutting down
    [2018-04-09 05:08:13.938086] I [fuse-bridge.c:5855:fini] 0-fuse:
    Unmounting '/n'.
    [2018-04-09 05:08:13.938106] I [fuse-bridge.c:5860:fini] 0-fuse: Closing
    fuse connection to '/n'.

    ==> glusterd.log <==
    [2018-04-09 05:08:15.118078] W [socket.c:3216:socket_connect]
    0-management: Error disabling sockopt IPV6_V6ONLY: "Protocol not
    available"

    ==> glustershd.log <==
    [2018-04-09 05:08:15.282192] W [socket.c:3216:socket_connect]
    0-gv01-client-0: Error disabling sockopt IPV6_V6ONLY: "Protocol not
    available"
    [2018-04-09 05:08:15.289508] W [socket.c:3216:socket_connect]
    0-gv01-client-1: Error disabling sockopt IPV6_V6ONLY: "Protocol not
    available"







    --
    Cheers,
    Tom K.
    
-------------------------------------------------------------------------------------

    Living on earth is expensive, but it includes a free trip around the
    sun.

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--
Cheers,
Tom K.
-------------------------------------------------------------------------------------

Living on earth is expensive, but it includes a free trip around the sun.

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