[Samba] smbd could not access share directory on drbd (8.3 on Centos 5 i386)

Steven Truong midair77 at gmail.com
Thu Feb 26 23:36:57 GMT 2009

Dear, all.  I am pulling my hair because I could not find any error
messsages that could point me to a fix to my problem.

The directory I want to share was mounted on /home with drbd and
heartbeat but then my users could not access any shares / their home
directories.  However, if I set up shares else where on my box like
share under /opt or /usr/local, then the same users would be able to
access these directories with out any error.

I ran strace and smbd seemed unable to access/stat the /home and
shares under home.  I looked into the access log of the client machine
and found out that the error was share "does not exist or permission
denied".  I would say that from my investigation of this problem, it
is clear that smbd could not see /home and its share.

Even though I set up my samba server as a standalone and authenticate
all users directly to openldap directory but my users clearly have
been able to access share that are not under /home (that were mounted
on /opt or /usr/local).

[root at polaris2 home]# strace -f /etc/init.d/smb start

[pid  4646] geteuid32()                 = 10024
[pid  4646] stat64("/home/share2", 0xbfc79dc8) = -1 EACCES (Permission denied)
[pid  4646] time(NULL)                  = 1235688608
[pid  4646] stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2819, ...})
= 0
[pid  4646] geteuid32()                 = 10024
[pid  4646] write(22, "[2009/02/26 14:50:08,  0] smbd/s"..., 68) = 68
[pid  4646] geteuid32()                 = 10024
[pid  4646] write(22, "  \'/home/share2\' does not exist "..., 110) = 110

[root at polaris2 home]# tailf /var/log/samba/user-39.log
[2009/02/26 14:50:08,  0] smbd/service.c:make_connection_snum(1078)
  Can't become connected user!
[2009/02/26 14:50:08,  0] smbd/service.c:make_connection_snum(1152)
  '/home/share2' does not exist or permission denied when connecting
to [share2] Error was Permission denied

[root at polaris2 samba]# testparm
Load smb config files from /usr/local/stow/samba-3.2.5/etc/samba/smb.conf
Processing section "[share1]"
Processing section "[share2]"
Processing section "[homes]"
Loaded services file OK.
Press enter to see a dump of your service definitions

        workgroup = MYNETWORK
        netbios name = POLARIS
        server string = polaris
        interfaces = lo, eth1
        bind interfaces only = Yes
        passdb backend = ldapsam:ldaps://ldapvm.mynetwork.com
        syslog = 4
        log file = /var/log/samba/%m.log
        max log size = 500
        name resolve order = wins bcast host
        deadtime = 10
        socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
        load printers = No
        printcap name = /etc/printcap
        disable spoolss = Yes
        show add printer wizard = No
        add user script = /usr/sbin/smbldap-useradd -m "%u"
        add group script = /usr/sbin/smbldap-groupadd -p "%g"
        add user to group script = /usr/sbin/smbldap-groupmod -m "%u" "%g"
        delete user from group script = /usr/sbin/smbldap-groupmod -x "%u" "%g"
        set primary group script = /usr/sbin/smbldap-usermod -g "%g" "%u"
        add machine script = /usr/sbin/smbldap-useradd -w "%u"
        logon path = ""
        logon home = ""
        os level = 0
        local master = No
    domain master = No
        dns proxy = No
        ldap admin dn = cn=Manager,dc=mynetwork,dc=com
        ldap group suffix = ou=groups
        ldap passwd sync = Yes
        ldap suffix = dc=mynetwork,dc=com
        ldap user suffix = ou=people
        valid users = user1, user2, user3
        hosts allow = 127., 192.168.10.

        comment = share1 on polaris
        path = /opt/QB
        read only = No
        create mask = 0664
        directory mask = 0775
        inherit permissions = Yes

        comment = share2 on polaris
        path = /home/share2
        read only = No
        create mask = 0664
        directory mask = 0775
        inherit permissions = Yes

        valid users = %S
        read only = No
        inherit permissions = Yes
        browseable = No
[root at polaris2 samba]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/md0               1524876    342648   1103516  24% /
/dev/md6               3049960    456616   2435916  16% /opt
/dev/md5                505508     10559    468850   3% /tmp
/dev/md3               6092288   2155656   3622168  38% /usr
/dev/md4              10153912    545084   9084716   6% /usr/local
/dev/md2               4061440    550224   3301576  15% /var
/dev/md1                256586     26682    216656  11% /boot
tmpfs                  1037772         0   1037772   0% /dev/shm
/dev/drbd0           212232684    191988 201259812   1% /home

[root at polaris2 samba]# mount
/dev/md0 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/md6 on /opt type ext3 (rw)
/dev/md5 on /tmp type ext3 (rw)
/dev/md3 on /usr type ext3 (rw)
/dev/md4 on /usr/local type ext3 (rw)
/dev/md2 on /var type ext3 (rw)
/dev/md1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/dev/drbd0 on /home type ext3 (rw)

[root at polaris2 samba]# ls /home/
a   lost+found   share2  testuser
[root at polaris2 samba]# cd /home/
[root at polaris2 home]# !echo
echo "Hello world" > b
[root at polaris2 home]# ls
a  b   lost+found share2  testuser
[root at polaris2 home]# cat b
Hello world
[root at polaris2 home]# cd share2
[root at polaris2 share2]# ls
[root at polaris2 share2]# rm a
rm: remove regular empty file `a'? y
[root at polaris2 share2]# !echo
echo "Hello world" > b
[root at polaris2 share2]# echo "Hello world" > c
[root at polaris2 share2]# cat c
Hello world
[root at polaris2 home]# ls -laht share2
total 12K
drwxr-xr-x 2 masistin humanresource 4.0K Feb 26 14:46 .
-rw-r--r-- 1 masistin humanresource   12 Feb 26 14:46 c
drwxrwx--- 9 root     root          4.0K Feb 26 14:45 ..

Could somebody take help me to solve this problem?

Thank you in advance,

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