VFS_GPFS(8) System Administration tools VFS_GPFS(8) (NAME) vfs_gpfs - gpfs (acls) (SYNOPSIS) vfs objects = gpfs (DESCRIPTION) VFS samba(7) . VFS gpfs gpfs GPFS . GPL GPFS . gpfs vfs : o NFSv4 ACL GPFS o oplock GPFS o Lease GPFS : posix-acl chown . chown . smb.conf acl map full control . yes () FILE_DELETE_CHILD ACE ( ) FILE_DELETE FILE_DELETE_CHILD . ACCESS_DENIED GENERIC_ALL ACL NFSv4 . (stackable) . 4.0 (per share) . (OPTIONS) nfs4:mode = [ simple | special ] (OWNER@ GROUP@) NFS4 ACL . simple . ACL . (MODEs) : o simple(default) - OWNER@ GROUP@ ACE . o special(deprecated) - OWNER@ GROUP@ ACE ACE . nfs4:acedup = [dontcare|reject|ignore|merge] ACE NFS4 ACL . ACE . : o dontcare - ACE o reject (deprecated) - ACL o ignore (deprecated) - ACE o merge (default) - OR ace.flag ace.mask ACE ACE nfs4:chown = [yes|no] chown . . chown ) (giving) ) (stealing) . . : o yes - chown o no (default) - chown gpfs:sharemodes = [ yes | no ] / (sharemode) GPFS. o yes(default) - sharemode GPFS. o no - sharemode GPFS. GPFS . NFS . gpfs:leases = [ yes | no ] / (leases / oplocks) GPFS. oplocks kernel oplocks . o yes(default) - lease GPFS. o no - lease GPFS. GPFS . NFS . gpfs:hsm = [ yes | no ] / HSM . o no(default) - HSM. o yes - HSM. gpfs:recalls = [ yes | no ] no (access denied) . (recall storms) Finder Explorer . o yes(default) - . HSM . o no - access denied. HSM . gpfs:hsm yes . gpfs:getrealfilename = [ yes | no ] / gpfs_get_realfilename_path(). (wildcard) . o yes(default) - gpfs_get_realfilename_path(). o no - gpfs_get_realfilename_path(). gpfs_get_realfilename_path() AIX . gpfs:winattr = [ yes | no ] / GPFS. GPFS HIDDEN READONLY SYSTEM . (extended attributes) . o no(default) - GPFS. o yes - GPFS. gpfs:acl = [ yes | no ] GPFS ACL . o yes(default) - GPFS ACL. o no - GPFS ACL SMB_VFS . gpfs:check_fstype = [ yes | no ] GPFS SMB. o yes(default) - SMB GPFS . . o no - GPFS SMB. gpfs:dfreequota = [ yes | no ] (quotas). "yes" . Fileset GPFS --dfreequota fileset . fileset . (soft hard quota) 0 . . . . . o yes - o no(default) - gpfs:settimes = [ yes | no ] gpfs_set_times (timestamps) . API GPFS utime GPFS winattr . o yes(default) - gpfs_set_times utime winattr. o no - gpfs_set_times. gpfs:clamp_invalid_times = [ yes | no ] GPFS . gpfs:settimes = yes GPFS 0 UINT32_MAX . . . Thu Jan 1 12:00:00 AM UTC 1970 ( ) Thu Jan 1 12:00:00 AM UTC 1970 Sun Feb 7 06:28:15 AM UTC 2106 Sun Feb 7 06:28:15 AM UTC 2106 . o no(default) - . o yes - 0 UINT32_MAX. gpfs:syncio = [yes|no] O_SYNC . GPFS . : o yes - O_SYNC o no (default) - (EXAMPLES) GPFS : [samba_gpfs_share] vfs objects = gpfs path = /test/gpfs_mount nfs4: mode = special nfs4: acedup = merge (CAVEATS) gpfs libgpfs_gpl libgpfs VFS gpfs : gpfs 3.2.1 PTF8 libgpfs libgpfs_gpl . gpfs libgpfs_gpl . (build) (header) gpfs_gpl.h gpfs 3.2.1 PTF8 (symlink) gpfs.h . (VERSION) 4.24.6 . (AUTHOR) (Andrew Tridgell) . . GPFS VFS (Volker Lendecke) IBM . IBM FSCC . Samba 4.24.6 08/16/2026 VFS_GPFS(8)