[Samba] Winbind process stuck at 100% after changing use_mmap to no

[Alex Crow]

On 03/07/16 21:47, Volker Lendecke wrote:
> On Sun, Jul 03, 2016 at 08:42:36PM +0100, Alex Crow wrote:
>> I've only put the "private dir" onto MooseFS, as instructed in the CTDB
>> docs.
> Can you quote these docs, so that we can correct them?
>
>> So, in that case, I'm assuming from your comments that it is no worry
>> that the mmap test does not pass on the MooseFS mounts?
> Yes, it is a high worry. If MooseFS is not mmap coherent, you need
> "use mmap = no", and we need to fix Samba and/or MooseFS to support
> tdbs better.
>
> But as said previously, ctdb should make this unnecessary.
>
>> The "private dir" contains these files:
>>
>> -rw-------+ 1 root root   24576 Jun 23 19:48 netlogon_creds_cli.tdb
>> -rw-------+ 1 root root  421888 Jun 23 19:48 passdb.tdb
>> -rw-------+ 1 root root  430080 Jun 23 19:47 secrets.tdb
>> drwxr-xr-x+ 3 root root 1001200 Jun 23 19:48 smbd.tmp
> This is weird. ctdb-controlled files should have the node-number
> appended. Are you sure that you are running ctdb?
>
> Volker



100% sure I'm using it! :

[root at zearing ~]# ctdb status
Number of nodes:6
pnn:0 172.16.40.13     OK
pnn:1 172.16.40.14     OK (THIS NODE)
pnn:2 172.16.40.15     OK
pnn:3 192.168.21.24    OK
pnn:4 192.168.21.25    OK
pnn:5 192.168.21.27    OK
Generation:1417726848
Size:6
hash:0 lmaster:0
hash:1 lmaster:1
hash:2 lmaster:2
hash:3 lmaster:3
hash:4 lmaster:4
hash:5 lmaster:5
Recovery mode:NORMAL (0)
Recovery master:4

smb.conf:

[global]

max protocol = SMB2
host msdfs = yes
workgroup = IFA_NET
netbios name = LIZARDCLUSTER
private dir = /mfs/ctdb/private
clustering = yes
use mmap = yes

/etc/sysconfig/ctdb:

# Options to ctdbd, read by ctdbd_wrapper(1)
#
# See ctdbd.conf(5) for more information about CTDB configuration variables.

# Shared recovery lock file to avoid split brain.  No default.
#
# Do NOT run CTDB without a recovery lock file unless you know exactly
# what you are doing.
CTDB_RECOVERY_LOCK=/mfs/ctdb/recovery.lock

# List of nodes in the cluster.  Default is below.
CTDB_NODES=/mfs/ctdb/nodes

# List of public addresses for providing NAS services.  No default.
CTDB_PUBLIC_ADDRESSES=/mfs/ctdb/public_addresses_cl

# What services should CTDB manage?  Default is none.
CTDB_MANAGES_SAMBA=yes
CTDB_MANAGES_WINBIND=yes

# CTDB_MANAGES_NFS=yes

# Raise the file descriptor limit for CTDB?
# ulimit -n 10000

# Default is to use the log file below instead of syslog.
# CTDB_LOGFILE=/var/log/log.ctdb
# CTDB_SYSLOG=no

# Default log level is ERR.  NOTICE is a little more verbose.
CTDB_DEBUGLEVEL=NOTICE

# Set some CTDB tunable variables during CTDB startup?
# CTDB_SET_TraverseTimeout=60
CTDB_SAMBA_SKIP_SHARE_CHECK=yes

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