<html><body><p><font size="2">2TB of extra meta data space for 100M files with ACLS?! I think that would be 20KB per file! Does seem there's some mistake here.</font><br><font size="2">Perhaps 2GB ? or 20GB? I don't see how we get to 2TeraBytes!</font><br><br><font size="2">ALSO, IIRC GPFS is supposed to use an ACL scheme where identical ACLs are stored once and each file with the same ACL just has a pointer to that same ACL.</font><br><font size="2">So no matter how many files have a particular ACL, you only "pay" once... An ACL is stored more compactly than its printed format, so I'd guess your ordinary ACL with a few users and groups would be less than 200 bytes.</font><br><br><br><br><font size="2" color="#5F5F5F">From: </font><font size="2">Michal Zacek <m.zacek77@gmail.com></font><br><br><br><tt>Hello,<br><br>we decided to convert NFS4 acl to POSIX (we need share same data <br>between SMB, NFS and GPFS clients), so I created script to convert <br>NFS4 to posix ACL. It is very simple, first I do "chmod -R 770 DIR" and <br>then "setfacl -R ..... DIR". I was surprised that conversion to posix <br>acl has taken more then 2TB of metadata space.There is about one hundred<br>million files at GPFS filesystem. Is this expected behavior?<br><br>Thanks,<br>Michal<br></tt><BR>
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