Permissions issues on NFS Shares

[Varun Chandak]

I have installed FreeNAS 9.2.1.6 64 Bit on m system and configured 2 hard drives of 500GB in mirror format. I have created a volume and a dataset mailstore under that volume. I'll explain what is happening in detail.

I use email program which has a user and writes files to /mailstore partition with permissions mailjol:mailjol which means mailjol is a user and mailjol is a group.

So i had created a user and group with that name and assigned the uid/gid so that permission issues wouldn't occur for user mailjol.

Now while configuring, I stumbled upon the term "maproot user" and "maproot group". By default it was set to N/A. However, while testing this I found that this N/A being set, permission issues crept. However, setting it to mailjol:mailjol got rid of those problems. But 1 thing i noticed that as a root, if I created any file (touch /mailstore/abc) the default permissions were mailjol:mailjol whereas it should be root:root. I think setting maproot user and maproot group led to these permissions.

So I want to know what maproot user and maproot group functionality is as I can't find any proper tutorial on this.

Coming to second issue, under /mailstore, i have a folder processedmails with permissions as root:root and 0777. Inside that some html files are present with permissions qmailq:root and 0600. Now I am logged on as root and trying to cat those files, I get Permission Denied. I logged on as mailjol user and did cat, still I got the error.


How to resolve the above issues ? I can provide more details if required.


Thanks in advance.

 

[Yatti420]

maproot user/ maproot group I believ does exactly what you described.. So when you touched that file it was correct to use mailjol..

In the docs you can read more about maproot etc.. http://doc.freenas.org/index.php/Unix_(NFS)_Shares#Creating_NFS_Shares

Perhaps you may want to try mapall versus maproot etc.. I'm by no means a permission expert.. I rarely play with NFS..

For your second issue is the how was qmailq created? Was this what the program did? aka created that folder.. You may need to create a user as qmailq versus mailjol or root.. Have you tried to chmod -R that folder as root giving 777? chown/chmod from ssh you should be able to do anything you like as root.. Just becareful as you can mess stuff up (permissions etc)

 

[Varun Chandak]

hii.. thanks for your reply...

actually i found out the problem was with maproot user.

initially I had set to maproot user mailjol and maproot group mailjol and thats why the default ownership was mailjol:mailjol.

I changed maproot user to root and the maproot group to N/A and it was working as desired. Now if any user creates a file, then owner is the user and group ownership is mailjol. This is working fine.

However, I tried maproot user to N/A and I got permission denied. Therefore I had to go with root.

As for your second query, qmailq is created when qmail program/software is installed for email purposes. It creates mail directories for users under /mailstore (configurable).. I have created qmailq user and qmail group according to the mailstore configuration. So no problems till now.... :)