MacOS – Weird problem with file ownership

filemacosserver.app

I recently had to move server drives from an OSX 10.6 server to a new Mac mini running Yosemite (10.10.4) and Yosemite server (4.1.3) – meaning I physically unplugged them from the old server and plugged them into the new server.

I am in the process of uniformly reassigning owner:group and ACLs.

I have a few folders that seemed to be locked and do not respond to 'sudo chown newOwner:newGroup'. Cannot chmod 777 either. On the command line these appear with numbers for owner and group (probably metadata from the old server environ) and with permissions set to 755. ls -le does not show an ACL associated with the folder.

Any ideas of how to modify permissions? I have already tried to unlock this in the Finder with no luck.

Alternatively, does anyone know where to find out how Yosemite (and server) handle permissions? What is the pecking order? Do ACLs trump POSIX permissions?

Oh, one more thing. Pretty sure this folder was copied over from a PC originally. Not sure.

Best Answer

Just in case anyone stumbles upon this question, I did figure it out:

sudo chflags -Rv nouchg

This command recursively strips finder file locks from a directory.

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MacOS – Cannot write to SMB Share with Terminal OS X 10.8

The problem here is that terminal is trying to write Unix style permissions to the CIFS share during the copy operation.

When you perform "cp" via terminal the data will transfer but the fchmod command will fail as the "core CIFS protocol does not provide unix ownership information or mode for files and directories".

A few solutions:

Mount the share via command line and engage the noperm option to ignore permission errors.
```
mount_smbfs -o noperm "//DOMAIN;username@myshare.com/blah" /Volumes/blah
```
Alternatively you can use rsync to copy files (without the -a flag)
```
rsync -rl source destination.
```

Source: https://www.samba.org/samba/docs/man/manpages-3/mount.cifs.8.html

MacOS – Why is it that I can no longer access some folders in the old time machine backups and how can I get access

Have you tried repairing the disk permissions via Disk Utility?

If that doesn't work, try enabling the root account, logging in, and attempting to access the files.

Use the "System Administrator" account to access the files:

navigate to the folder "/System/Library/CoreServices/" and open "Directory Utility.app"

Click the padlock

in the "Edit" menu, choose "Enable root user"

from the Apple menu, choose "Log out"

log in as "System Administrator" (or "root") and you will have access to the files in "/Users/Abby"

Best Answer

Related Solutions

MacOS – Cannot write to SMB Share with Terminal OS X 10.8

MacOS – Why is it that I can no longer access some folders in the old time machine backups and how can I get access

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