| 1 | This patch has been taken against SAMBA_3_0 Release 20028.
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| 2 |
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| 3 | The patch basically moves the GPFS-ACL functionalities into the new GPFS VFS module( vfs_gpfs ).
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| 4 |
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| 5 | Please read SAMBA_3_0/source/modules/README.nfs4acls.txt - generalised README file on Samba support for NFS4-ACLS.
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| 6 | This README file is specific for GPFS only.
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| 7 |
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| 8 | Configuring GPFS ACL support
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| 9 | ===============================
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| 10 |
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| 11 | Binary: (default install path is [samba]/lib/vfs/)
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| 12 | - gpfs.so
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| 13 |
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| 14 | Its compiled by default, no additional configure option needed.
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| 15 |
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| 16 | To enable/use/load this module, include "vfs objects = gpfs" in the smb.conf file under concerned share-name.
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| 17 |
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| 18 | Example of smb.conf:
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| 19 |
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| 20 | [smbtest]
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| 21 | path = /gpfs-test
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| 22 | vfs objects = gpfs
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| 23 | nfs4: mode = special
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| 24 | nfs4: chown = yes
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| 25 | nfs4: acedup = merge
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| 26 |
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| 27 | Adding "vfs objects = gpfs" to a share should be done only in case when NFS4 is really supported by the filesystem.
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| 28 | (Otherwise you may get performance loss.)
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| 29 |
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| 30 | ==================================================
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| 31 | Below are some limitations listed for this module:
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| 32 | ==================================================
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| 33 | 1. When a child file or child directory is created, the results are a bit different from windows as specified below:
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| 34 |
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| 35 | Eg: Prent directory is set to have 2 ACES - full access for owner and everyone
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| 36 |
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| 37 | Default ACL for Windows: 2 aces: allow ACE for owner and everyone
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| 38 | Default ACL for GPFS: 6 aces: allow and deny ACEs for owner, group and everyone
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| 39 |
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| 40 | The below mentioned inheritance flags and its combinations are applied only to the owner ACE and not to everyone ACE
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| 41 |
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| 42 | "fi"------>File Inherit
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| 43 | "di"------>Directory Inherit
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| 44 | "oi"------>Inherit Only
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| 45 |
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| 46 |
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| 47 | Parent dir: no inheritance flag set
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| 48 | Windows: index=0: GPFS(special mode): index=0: GPFS(simple mode): index=0:
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| 49 | child File: default acl: 2 aces child file: default acl: 6 aces child file: default acl: 6 aces
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| 50 | child dir: default acl: 2 aces child dir: default acl: 6 aces child dir: default acl: 6 aces
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| 51 |
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| 52 |
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| 53 | Parent dir: "fi" flag set
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| 54 | Windows: index=1: GPFS(special mode): index=1: GPFS(simple mode): index=1:
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| 55 | child file: no flag set child file: "fi" flag set child file: default acl: 6 aces
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| 56 | child dir: "fioi" flag set child dir: "fi" flag set child dir: "fi" flag set
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| 57 |
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| 58 |
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| 59 | Parent dir: "di" flag set
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| 60 | Windows: index=2: GPFS(special mode): index=2: GPFS(simple mode): index=2:
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| 61 | child file: default acl: 2 aces child file: default acl: 6 aces child file: default acl: 6 aces
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| 62 |
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| 63 |
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| 64 | Parent dir: "fidi" flag set
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| 65 | Windows: index=3: GPFS(special mode): index=3: GPFS(simple mode): index=3:
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| 66 | child file: no flag set child file: "fidi" flag set child file: default acl: 6 aces
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| 67 |
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| 68 |
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| 69 | Parent dir: "fioi" flag set
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| 70 | Windows: index=4: GPFS(special mode): index=4: GPFS(simple mode): index=4:
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| 71 | child file: no flag set child file: "fi" flag set child file: default acl: 6 aces
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| 72 | child dir: "fioi" flag set child dir: "fi" flag set child dir: "fi" flag set
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| 73 |
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| 74 |
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| 75 | Parent dir: "dioi" flag set
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| 76 | Windows: index=5: GPFS(special mode): index=5: GPFS(simple mode): index=5:
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| 77 | child file: default acl: 2 aces child file: default acl: 6 aces child file: default acl: 6 aces
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| 78 |
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| 79 |
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| 80 | Parent dir: "fidioi" flag set
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| 81 | Windows: index=6: GPFS(special mode): index=6: GPFS(simple mode): index=6:
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| 82 | child file: no flag set child file: "fidi" flag set child file: default acl: 6 aces
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