samba share seperated disk

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xinloiemnham
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Joined: 2014/11/14 09:31:57

samba share seperated disk

Post by xinloiemnham » 2014/11/18 04:17:18

I get trouble while trying to share mounted hard disk using samba.
Here is my volume table:

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# lsblk
NAME              MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
fd0                 2:0    1    4K  0 disk
sda                 8:0    0    5G  0 disk
ââsda1              8:1    0  500M  0 part /boot
ââsda2              8:2    0  4.5G  0 part
  ââvg_fs-lv_swap 253:0    0    2G  0 lvm  [SWAP]
  ââvg_fs-lv_root 253:1    0  2.6G  0 lvm  /
sdb                 8:16   0   20G  0 disk
sdc                 8:32   0   20G  0 disk
ââsdc1              8:33   0    1K  0 part
ââsdc5              8:37   0   20G  0 part /data
sr0                11:0    1 1024M  0 rom
/dev/sdc5 was mounted at /data
Here is content of /etc/samba/smb.conf

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[global]
        workgroup = sbb01.spoc.global
        server string = Samba Server Version %v
        security = user
        map to guest = bad user
        dns proxy = no
[data]
        path = /data
        writable = yes
        browsable = yes
        guest ok = yes
        read only = no
permission on /data (and its child folders):

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# ls -l / | grep data
drwxr-xr-x.   3 nobody nobody  4096 Nov 14 16:02 data
I've tested with /data on local disk (not mounted /dev/sdc5 on it), it works. Windows PC can access to this shared folder with no error, fully read/write on it.
But when I mount /dev/sdc5 on this mount point (/data), I cannot access it, here is the error:
Image

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TrevorH
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Re: samba share seperated disk

Post by TrevorH » 2014/11/18 08:27:59

Check the permissions on /data are correct. Also make sure that your selinux contexts on there are correct by running restorecon -r /data
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xinloiemnham
Posts: 5
Joined: 2014/11/14 09:31:57

Re: samba share seperated disk

Post by xinloiemnham » 2014/11/19 07:15:38

TrevorH wrote:Check the permissions on /data are correct. Also make sure that your selinux contexts on there are correct by running restorecon -r /data
As a comparation, I 've created one more share folder in /share, here is the content of /etc/samba/smb.conf:

Code: Select all

[global]
        workgroup = sbb01.spoc.global
        server string = Samba Server Version %v
        security = user
        map to guest = bad user
        dns proxy = no
[data]
        path = /data
        writable = yes
        browsable = yes
        guest ok = yes
        read only = no
[share]
        path = /share
        writable = yes
        browsable = yes
        guest ok = yes
        read only = no
Here is folder permission of those two folders:

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drwxr-xr-x.   3 nobody nobody  4096 Nov 14 16:02 data
drwxr-xr-x.   3 nobody nobody  4096 Nov 18 11:10 share
then I access to these shared folders from windows, I can read/write on /share folder but cannot access /data folder.
The only thing that differ is /dev/sdc5 was mounted on /data, no device was mounted on /share.

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TrevorH
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Re: samba share seperated disk

Post by TrevorH » 2014/11/19 08:56:51

Now post the ls -laZ output for those two directories.
CentOS 6 will die in November 2020 - migrate sooner rather than later!
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 is dead, do not use it.
Full time Geek, part time moderator. Use the FAQ Luke

xinloiemnham
Posts: 5
Joined: 2014/11/14 09:31:57

Re: samba share seperated disk

Post by xinloiemnham » 2014/11/19 09:30:10

TrevorH wrote:Now post the ls -laZ output for those two directories.

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drwxr-xr-x. nobody nobody system_u:object_r:default_t:s0   data
drwxr-xr-x. nobody nobody unconfined_u:object_r:samba_share_t:s0 share

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TrevorH
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Re: samba share seperated disk

Post by TrevorH » 2014/11/19 12:22:17

Yes, there's your problem, the selinux context on /share is correct but on /data it is not. You need to use semanage fcontext to add a rule to tell it to label it correctly then restorecon -r the directory to apply the change or you need to use chcon to change it manually. The first method is better since it survives a filesystem relabel where the chcon method gets reset and your change backed out.
CentOS 6 will die in November 2020 - migrate sooner rather than later!
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 is dead, do not use it.
Full time Geek, part time moderator. Use the FAQ Luke

xinloiemnham
Posts: 5
Joined: 2014/11/14 09:31:57

Re: samba share seperated disk

Post by xinloiemnham » 2014/11/20 08:27:12

TrevorH wrote:Yes, there's your problem, the selinux context on /share is correct but on /data it is not. You need to use semanage fcontext to add a rule to tell it to label it correctly then restorecon -r the directory to apply the change or you need to use chcon to change it manually. The first method is better since it survives a filesystem relabel where the chcon method gets reset and your change backed out.
thank you, this problem is solved :)

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