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Old 03-15-2011, 12:55 AM   #1
JATA01
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Exclamation mount: block device giving read only


Hi,

I want to keet some data on windows dir. I have tried the below command and giving the below error.

[root@xyz0044 ~]# mount -t cifs //10.48.64.52/jata -o username=domain\v.kumar3,password=xxxx /mnt/backup
mount: block device //10.48.64.52/jata is write-protected, mounting read-only
mount: cannot mount block device //10.48.64.52/jata read-only


Thanks-
Shankar
 
Old 03-15-2011, 01:29 AM   #2
sem007
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Hi,

Check sharing and security permission on windows. There might only read permission on folder.
 
Old 03-17-2011, 04:25 AM   #3
JATA01
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Yes, I have created a folder name jata in D: directory and gien full access, but problem still same.
Do we need to install cifs_utils rpm on linux box? it's a production box. we can't find cifs_utils on my proxy server.
Is there any other way or do we need samba??

Thanks-
Shankar
 
Old 03-17-2011, 07:12 AM   #4
agentbuzz
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samba client

Shankar,
You don't need all of Samba unless you will be mounting shares FROM Windows to your Linux box, but you do need the samba client and winbind and the Kerberos 5 libs and userland programs for getting Kerberos tickets. Here are the package names on a CentOS box:

Code:
[root@localhost ~]# cat /etc/redhat-release
CentOS release 5.5 (Final)

samba-client.x86_64
samba3x-winbind.x86_64
krb5-libs.x86_64
krb5-workstation.x86_64
krb5-auth-dialog.x86_64
pam_krb5.x86_64
You will still have to define your Kerberos realms, KDCs, etc., in /etc/krb5.conf.
Code:
man krb5.conf
 
Old 03-18-2011, 06:39 AM   #5
Reuti
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@agentbuzz: how does the mount of a Windows share refer to Kerberos?
 
Old 03-18-2011, 09:04 AM   #6
agentbuzz
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Reuti,
In my case, the Windows users have to access resources on the Linux server and there is a password expiration policy. I don't want to maintain a separate Samba password for the home shares. So, I need Service Principal Names for the Linux server; Kerberos uses the SPNs. Those can only exist if the Linux server is a domain "Member Server" in AD. As well, I have to use winbind and can only do that if the Linux server is a domain member. To join the domain and then enumerate shares or mount them, I must have configured Samba in ADS mode to use Kerberos. As far as mounting the Windows share from Linux, it can be done using either NTLMv2 or Kerberos, but it's easier if the Linux box can obtain a TGT from the Windows DC/KDC and can simply ask for an additional ticket for the shared resource. The "machine account" in AD is granted write privilege to the share and doesn't have to have service account credentials cached somewhere.
 
Old 03-19-2011, 01:34 PM   #7
JATA01
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In our scenario..

one report file is created on linux servers and I want this file(content of this file) should be sync with windows file.
I have tried cift but some where I read that 2.6.18 kernel has some bug and can't mount cifs.
Using samba only samba share file should available on windows but content will be on linux only and user which has no access of linux server.
what steps we need to setup using kerberos??

Thanks-
Shankar
 
Old 03-21-2011, 01:50 AM   #8
JATA01
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Please find the below error and suggest, how to mount windows(win2003 standard edition) dir on linux(2.6.18-92.1.1.el5).

[root@indls00xx ~]# sudo mount -t cifs //indws00yy/jata(windows file) /share -o username=<domain>\<username>,password=<xxxx>,domain=<domain name>
mount error 13 = Permission denied
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)
[root@indls00xx ~]# sudo mount.cifs //indws00yy/jata /share -o username=<doamin>\<username>,password=xxxx,domain=<domain name>
mount error 13 = Permission denied
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)
You have mail in /var/spool/mail/root
[root@indls0037 ~]#


Thanks-
Shankar
 
Old 04-06-2011, 02:21 AM   #9
JATA01
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Hi,

I was making mistake, 2nd option works perfect after installing samba packages.

1. #mount -t cifs //10.48.64.52/jata -o username=domain\v.kumar3,password=xxxx /mnt/backup

2. #mount -t cifs //10.48.64.52/jata -o username=domain/v.kumar3,password=xxxx /mnt/backup

Thanks-
Shankar
 
  


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