[CentOS] FW: Permissions issue

Jason Pyeron jpyeron at pdinc.us
Thu Nov 11 13:01:30 EST 2010



> -----Original Message-----
> From: centos-bounces at centos.org 
> [mailto:centos-bounces at centos.org] On Behalf Of Jason Pyeron
> Sent: Thursday, November 11, 2010 12:48
> To: 'CentOS mailing list'
> Subject: [CentOS] FW: Permissions issue
> 
> I am at loss on this mysterious file permission issue. I 
> cannot move the file out of the directory, but I can rename 
> it. I cannot read the file.
> It is not open by any processes, the filesystem is in read 
> write mode. I am logged in as root.
> 


More information:

Files can be deleted.

This happens for every file that is created by a tar czf command.

If you do a tar cz | cat > file.tgz the file is "normal"

I am very confused now.


> 
> [root at localhost /]# tar cvzf ~/named.201011111228.tgz 
> --one-file-system /etc/named.conf /var/named/
> tar: Removing leading `/' from member names /etc/named.conf 
> /var/named/ /var/named/data/ /var/named/lost+found/ /var/named/slaves/
> tar: /var/named/backup.tgz: Cannot open: Permission denied 
> /var/named/chroot/ /var/named/chroot/etc/ 
> /var/named/chroot/etc/named.caching-nameserver.conf
> <snip/>
> tar: Error exit delayed from previous errors [root at localhost 
> /]# dir /var/named/backup.tgz
> -rw------- 1 root root 6651 Nov 11 11:32 
> /var/named/backup.tgz [root at localhost /]# stat /var/named/backup.tgz
>   File: `/var/named/backup.tgz'
>   Size: 6651            Blocks: 24         IO Block: 4096   
> regular file
> Device: fd04h/64772d    Inode: 98312       Links: 1
> Access: (0600/-rw-------)  Uid: (    0/    root)   Gid: (    
> 0/    root)
> Access: 2010-11-11 12:28:33.000000000 -0500
> Modify: 2010-11-11 11:32:03.000000000 -0500
> Change: 2010-11-11 11:32:03.000000000 -0500 [root at localhost 
> /]# mv /var/named/backup.tgz ~
> mv: cannot open `/var/named/backup.tgz' for reading: 
> Permission denied [root at localhost /]# chmod 777 
> /var/named/backup.tgz [root at localhost /]# mv /var/named/backup.tgz ~
> mv: cannot open `/var/named/backup.tgz' for reading: 
> Permission denied [root at localhost /]# getfacl /var/named/backup.tgz
> getfacl: Removing leading '/' from absolute path names # 
> file: var/named/backup.tgz # owner: root # group: root 
> user::rwx group::rwx other::rwx
> 
> [root at localhost /]# dir /var/named/backup.tgz -rwxrwxrwx 1 
> root root 6651 Nov 11 11:32 /var/named/backup.tgz 
> [root at localhost /]# setfacl -b /var/named/backup.tgz 
> [root at localhost /]# dir /var/named/backup.tgz -rwxrwxrwx 1 
> root root 6651 Nov 11 11:32 /var/named/backup.tgz 
> [root at localhost /]# getfacl /var/named/backup.tgz
> getfacl: Removing leading '/' from absolute path names # 
> file: var/named/backup.tgz # owner: root # group: root 
> user::rwx group::rwx other::rwx
> 
> [root at localhost /]# mv /var/named/backup.tgz ~
> mv: cannot open `/var/named/backup.tgz' for reading: 
> Permission denied [root at localhost /]# mount <redact> No 
> readonly mounts </redact> [root at localhost /]# df -h <redact> 
> Each filessytem has plenty of free space </redact> 
> [root at localhost /]# dir /var/named/ total 72
> drwxr-x---  6 root  named  4096 Nov 11 11:32 .
> drwxr-xr-x 24 root  root   4096 Apr  1  2010 ..
> -rwxrwxrwx  1 root  root   6651 Nov 11 11:32 backup.tgz
> drwxr-x---  6 root  named  4096 Nov 11 11:48 chroot
> drwxrwx---  2 named named  4096 Jan 18  2010 data
> drwx------  2 root  named 16384 Feb  4  2009 lost+found
> drwxrwx---  2 named named  4096 Jan 18  2010 slaves 
> [root at localhost named]# /etc/init.d/named stop
> Stopping named: .                                          [  OK  ]
> [root at localhost named]# mv backup.tgz foo [root at localhost 
> named]# mv foo backup.tgz [root at localhost named]# mv backup.tgz ~
> mv: cannot open `backup.tgz' for reading: Permission denied 
> [root at localhost named]# lsof | grep backup.tgz 
> [root at localhost named]# 
> 
--
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- Jason Pyeron                      PD Inc. http://www.pdinc.us -
- Principal Consultant              10 West 24th Street #100    -
- +1 (443) 269-1555 x333            Baltimore, Maryland 21218   -
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