If there are ACLs, then you also need to update all ACLs (gpfs_getacl(), update uids and gids in all entries, gpfs_putacl()), in addition to the chown() call.
Regards,
Christof Schmitt || IBM || Spectrum Scale Development || Tucson, AZ
[email protected] || +1-520-799-2469 (T/L: 321-2469)
[email protected] || +1-520-799-2469 (T/L: 321-2469)
----- Original message -----
From: Jim Doherty <[email protected]>
Sent by: [email protected]
To: gpfsug main discussion list <[email protected]>
Cc:
Subject: [EXTERNAL] Re: [gpfsug-discuss] Change uidNumber and gidNumber for billions of files
Date: Mon, Jun 8, 2020 5:57 PM
You will need to do this with chown from the c library functions (could do this from perl or python). If you try to change this from a shell script you will hit the Linux command which will have a lot more overhead. I had a customer attempt this using the shell and it ended up taking forever due to a brain damaged NIS service :-).JimOn Monday, June 8, 2020, 2:01:39 PM EDT, Lohit Valleru <[email protected]> wrote:_______________________________________________Hello Everyone,We are planning to migrate from LDAP to AD, and one of the best solution was to change the uidNumber and gidNumber to what SSSD or Centrify would resolve.May I know, if anyone has come across a tool/tools that can change the uidNumbers and gidNumbers of billions of files efficiently and in a reliable manner?We could spend some time to write a custom script, but wanted to know if a tool already exists.Please do let me know, if any one else has come across a similar situation, and the steps/tools used to resolve the same.Regards,Lohit
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