PowerScale: Rollback from advanced ACL to Synthetic permission using chmod

Summary: This article would help in rolling back from advanced ACL to synthetic type using chmod on the desired directory.

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Symptoms

1- Cluster has a directory (.ssh) with advanced ACL applied to it.  
Cluster-1# ls -l
total 296
-rwxr-x--- +   1 150xxx  admin  10270 Mar 31 22:14 .sh_history
drwxr-x--- +   2 150xxx  admin    114 Mar 30 18:15 .ssh   >>>"+" indicates that Advance ACLs are applied to the directory. 

Cluster-1# ls -led .ssh
drwxr-x--- +   2 150xxx  admin  114 Mar 30 18:15 .ssh
 OWNER: user:150xxx
 GROUP: group:admin
 CONTROL:dacl_auto_inherited,sacl_auto_inherited
 0: user:150xxx allow dir_gen_read,dir_gen_write,dir_gen_execute,std_write_dac,delete_child
 1: group:admin allow std_read_dac,std_synchronize,dir_read_attr
 2: everyone allow std_read_dac,std_synchronize,dir_read_attr
 3: group:admin allow inherited dir_gen_read,dir_gen_execute,read_write_sacl,inherited_ace
 4: creator_group allow inherited dir_gen_read,dir_gen_execute,read_write_sacl,object_inherit,container_inherit,inherit_only,inherited_ace
 5: user:150xxx allow inherited dir_gen_all,inherited_ace
 6: creator_owner allow inherited dir_gen_all,object_inherit,container_inherit,inherit_only,inherited_ace

2-Changing the permission to "700" using chmod will not take effect. 
  
#Cluster-1#chmod 700 .ssh
Cluster-1#
Cluster-1# ls -l
total 296

-rwxr-x--- +   1 150xxx  admin  10270 Mar 31 22:14 .sh_history
drwxr-x--- +   2 150xxx  admin    114 Mar 30 18:15 .ssh   <<ADV ACL remains the same >>

Cause

Synthetic ACL must be applied to the desired directory.

Resolution

-Adding "- b" option would apply the synthetic permission to the directory 
Cluster-1# chmod -b 700 .ssh
Cluster-1#
Cluster-1#
Cluster-1# ls -l
total 296
-rwxr-x--- +   1 150xxx  admin  10270 Mar 31 22:14 .sh_history
drwx------     2 150xxx  admin    114 Mar 30 18:15 .ssh
Attention: Do take consent from customers about the change that will take place.

Additional Information

Please refer to this video:

Affected Products

PowerScale OneFS
Article Properties
Article Number: 000199996
Article Type: Solution
Last Modified: 18 Sept 2025
Version:  7
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