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.\" Author: [see the "AUTHOR" section]
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.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
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.\" Manual: System Administration tools
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.\" Language: English
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.TH "VFS_GPFS" "8" "08/02/2011" "Samba 3\&.5" "System Administration tools"
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.TH "VFS_GPFS" "8" "10/18/2011" "Samba 3\&.6" "System Administration tools"
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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This module is stackable\&.
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gpfs:sharemodes = [ yes | no ]
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Enable/Disable cross node sharemode handling for GPFS\&.
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\- propagate sharemodes across all GPFS nodes\&.
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\- do not propagate sharemodes across all GPFS nodes\&. This should only be used if the GPFS file system is exclusively exported by Samba\&. Access by local unix application or NFS exports could lead to corrupted files\&.
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gpfs:leases = [ yes | no ]
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Enable/Disable cross node leases (oplocks) for GPFS\&. You should also set the
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options to the same value\&.
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\- propagate leases across all GPFS nodes\&.
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\- do not propagate leases across all GPFS nodes\&. This should only be used if the GPFS file system is exclusively exported by Samba\&. Access by local unix application or NFS exports could lead to corrupted files\&.
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gpfs:hsm = [ yes | no ]
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Enable/Disable announcing if this FS has HSM enabled\&.
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\- Do not announce HSM\&.
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gpfs:getrealfilename = [ yes | no ]
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Enable/Disable usage of the
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gpfs_get_realfilename_path()
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function\&. This improves the casesensitive wildcard file name access\&.
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gpfs_get_realfilename_path()\&.
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gpfs_get_realfilename_path()\&. It seems that
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gpfs_get_realfilename_path()
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doesn\'t work on AIX\&.
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gpfs:winattr = [ yes | no ]
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Enable/Disable usage of the windows attributes in GPFS\&. GPFS is able to store windows file attributes e\&.g\&. HIDDEN, READONLY, SYSTEM and others natively\&. That means Samba doesn\'t need to map them to permission bits or extended attributes\&.
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\- do not use GPFS windows attributes\&.
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\- use GPFS windows attributes\&.
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gpfs:merge_writeappend = [ yes | no ]
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GPFS ACLs doesn\'t know about the \'APPEND\' right\&. This optionen lets Samba map the \'APPEND\' right to \'WRITE\'\&.
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\- map \'APPEND\' to \'WRITE\'\&.
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\- do not map \'APPEND\' to \'WRITE\'\&.
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gpfs:refuse_dacl_protected = [ yes | no ]
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As GPFS does not support the ACE4_FLAG_NO_PROPAGATE NFSv4 flag (which would be the mapping for the DESC_DACL_PROTECTED flag), the status of this flag is currently silently ignored by Samba\&. That means that if you deselect the "Allow inheritable permissions\&.\&.\&." checkbox in Windows\' ACL dialog and then apply the ACL, the flag will be back immediately\&.
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To make sure that automatic migration with e\&.g\&. robocopy does not lead to ACLs silently (and unintentionally) changed, you can set
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gpfs:refuse_dacl_protected = yes
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to enable an explicit check for this flag and if set, it will return NT_STATUS_NOT_SUPPORTED so errors are shown up on the Windows side and the Administrator is aware of the ACLs not being settable like intended
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\- ignore the DESC_DACL_PROTECTED flags\&.
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\- reject ACLs with DESC_DACL_PROTECTED\&.
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nfs4:mode = [ simple | special ]
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Enable/Disable substitution of special IDs on GPFS\&. This parameter should not affect the windows users in anyway\&. It only ensures that Samba sets the special IDs \- OWNER@ and GROUP@ ( mappings to simple uids ) that are relevant to GPFS\&.
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The gpfs gpl libraries are required by
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Depending on the version of gpfs, the
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library is needed at runtime by the
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VFS module during both compilation and runtime\&. Also this VFS module is tested to work on SLES 9/10 and RHEL 4\&.4
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VFS module: Starting with gpfs 3\&.2\&.1 PTF8, the complete
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is available as open source and
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does no longer exist\&. With earlier versions of gpfs, only the
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library was open source and could be used at run time\&.
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At build time, only the header file
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is required , which is a symlink to
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in gpfs versions newer than 3\&.2\&.1 PTF8\&.
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This man page is correct for version 3\&.0\&.25 of the Samba suite\&.