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Remote shell command: /usr/bin/rsh Remote file copy command: /usr/bin/rcp GPFS cluster configuration servers: ----------------------------------- Primary server: k164sn06.kgn.ibm.com Secondary server: k164n04.kgn.ibm.com Node Daemon node name IP address Admin node name Designation -------------------------------------------------------------------------------------- 1 k164n04.kgn.ibm.com 198.117.68.68 k164n04.kgn.ibm.com quorum 2 k164n05.kgn.ibm.com 198.117.68.69 k164n05.kgn.ibm.com quorum 3 k164n06.kgn.ibm.com 198.117.68.70 k164sn06.kgn.ibm.com quorum-manager See the “mmlscluster Command” on page 198 for complete usage information. Specifying nodes as input to GPFS commands Many GPFS commands accept a node or multiple nodes as part of their input, using the -N flag. Nodes can be specified to GPFS commands in a variety of ways: Node A representation of an individual node, which can be any of these: v Short GPFS administration node interface name. v Long GPFS administration node interface name. v Short GPFS daemon node interface name. v Long GPFS daemon node interface name. v IP address corresponding to the GPFS daemon node interface. v GPFS node number. Node - Node A node range, indicated by specifying two node numbers separated by a hyphen (-), with the first node number being less than or equal to the second node number. For example, node range 3-8 specifies the nodes with node numbers 3, 4 5, 6, 7 and 8. NodeClass A set of nodes that share a particular characteristic. These node classes are known to GPFS: all All of the nodes in the GPFS cluster. clientnodes All nodes that do not participate in file system administration activities. managernodes All nodes in the pool of nodes from which configuration managers, file system managers, and token managers are selected. mount For commands involving a file system, all of the nodes in the GPFS cluster on which the file system is mounted. nonquorumnodes All of the non-quorum nodes in the GPFS cluster. nsdnodes All of the NSD server nodes in the GPFS cluster. quorumnodes All of the quorum nodes in the GPFS cluster. NodeFile A file that contains a list of nodes. A node file can contain individual nodes or node ranges. Not every GPFS commands supports all of the above node specification options. To learn what kinds of node specifications are supported by a particular GPFS command, see the relevant command description in Chapter 8, “GPFS commands,” on page 59. 4 GPFS: Administration and Programming Reference
Adding nodes to a GPFS cluster You can add nodes to an existing GPFS cluster by issuing the mmaddnode command. The new nodes are available immediately after the successful completion of this command. You must follow these rules when adding nodes to a GPFS cluster: v You may issue the command only from a node that already belongs to the GPFS cluster. v A node may belong to only one GPFS cluster at a time. v The nodes must be available for the command to be successful. If any of the nodes listed are not available when the command is issued, a message listing those nodes is displayed. You must correct the problem on each node and reissue the command to add those nodes. To add node k164n06 to the GPFS cluster, enter: mmaddnode -N k164n06 The system displays information similar to: Mon Aug 9 21:53:30 EDT 2004: 6027-1664 mmaddnode: Processing node k164n06.kgn.ibm.com mmaddnode: Command successfully completed mmaddnode: 6027-1371 Propagating the changes to all affected nodes. This is an asynchronous process. To confirm the addition of the nodes, enter: mmlscluster The system displays information similar to: GPFS cluster information ======================== GPFS cluster name: cluster1.kgn.ibm.com GPFS cluster id: 680681562214606028 GPFS UID domain: cluster1.kgn.ibm.com Remote shell command: /usr/bin/rsh Remote file copy command: /usr/bin/rcp GPFS cluster configuration servers: ----------------------------------- Primary server: k164n04.kgn.ibm.com Secondary server: k164n05.kgn.ibm.com Node Daemon node name IP address Admin node name Designation -------------------------------------------------------------------------------------- 1 k164n04.kgn.ibm.com 198.117.68.68 k164n04.kgn.ibm.com quorum 2 k164n05.kgn.ibm.com 198.117.68.69 k164n05.kgn.ibm.com quorum 3 k164n06.kgn.ibm.com 198.117.68.70 k164n06.kgn.ibm.com See the “mmaddnode Command” on page 66 and the “mmlscluster Command” on page 198 for complete usage information. Deleting nodes from a GPFS cluster You can delete nodes from a GPFS cluster by issuing the mmdelnode command. You must follow these rules when deleting nodes: v A node being deleted cannot be the primary or secondary GPFS cluster configuration server unless you intend to delete the entire cluster. Verify this by issuing the mmlscluster command. If a node to be deleted is one of the servers and you intend to keep the cluster, issue the mmchcluster command to assign another node as a configuration server before deleting the node. Chapter 2. Managing your GPFS cluster 5
Page 1: General Parallel File System Admini
Page 4 and 5: Note: Before using this information
Page 6 and 7: Chapter 4. Managing disks . . . . .
Page 8 and 9: mmrestripefile Command . . . . . .
Page 10 and 11: viii GPFS: Administration and Progr
Page 12 and 13: x GPFS: Administration and Programm
Page 14 and 15: Table 1. Typographic conventions (c
Page 16 and 17: - The mmmount and mmumount commands
Page 18 and 19: - The local cluster no longer needs
Page 20 and 21: xviii GPFS: Administration and Prog
Page 22 and 23: 2 GPFS: Administration and Programm
Page 26 and 27: v A node being deleted cannot be th
Page 28 and 29: You may be able to tune your cluste
Page 30 and 31: The system displays information sim
Page 32 and 33: If it becomes necessary to stop GPF
Page 34 and 35: ecorded in the GPFS configuration f
Page 36 and 37: Checking and repairing a file syste
Page 38 and 39: -j scatter Block allocation type -D
Page 40 and 41: Restriping offers the opportunity t
Page 42 and 43: See the “mmdf Command” on page
Page 44 and 45: 2. The TSM client code must be inst
Page 46 and 47: 26 GPFS: Administration and Program
Page 48 and 49: gpfs3nsd 0903C1573F2AD7B6 /dev/sdb1
Page 50 and 51: 12 % complete on Fri Feb 3 16:02:39
Page 52 and 53: suspended Indicates that data is to
Page 54 and 55: v You must identify the disks by th
Page 58 and 59: To disable quota management: 1. Iss
Page 60 and 61: During the normal operation of file
Page 62 and 63: The system displays output similar
Page 66 and 67: Each GPFS file or directory has an
Page 68 and 69: group::rwx- #effective:rw-- other::
Page 70 and 71: 2. A Directory ACL is similar to th
Page 72 and 73: This ACL shows four ACL entries (an
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general suggestion is for the compu
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56 GPFS: Administration and Program
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58 GPFS: Administration and Program
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Table 4. GPFS commands (continued)
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mmadddisk Command mmadddisk Command
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mmadddisk Command Note: Rebalancing
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mmaddnode Command Name mmaddnode Ad
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mmaddnode Command See also “mmchc
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mmapplypolicy Command how the mmapp
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mmapplypolicy Command MIGRATED /fs1
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mmauth Command delete Deletes a clu
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mmauth Command mmauth: Propagating
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mmbackup Command Name mmbackup - Ba
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mmbackup Command Tue Mar 18 14:03:2
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mmchattr Command -m MetadataReplica
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mmchcluster Command Name mmchcluste
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mmchcluster Command Security You mu
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mmchconfig Command Name mmchconfig
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mmchconfig Command dmapiMountTimeou
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mmchconfig Command and search for n
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mmchdisk Command Name mmchdisk - Ch
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mmchdisk Command resume Informs GPF
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mmcheckquota Command Name mmcheckqu
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mmcheckquota Command 55 % complete
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mmchfileset Command Examples This c
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mmchfs Command If your file system
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mmchfs Command When considering dat
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mmchmgr Command GPFS: 6027-628 Send
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mmchnsd Command Options NONE DiskNa
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mmchpolicy Command Name mmchpolicy
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mmcrcluster Command Name mmcrcluste
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mmcrcluster Command If your primary
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mmcrfileset Command Name mmcrfilese
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mmcrfs Command Name mmcrfs - Create
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mmcrfs Command Options other disk)
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mmcrfs Command -z {yes | no} Enable
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mmcrnsd Command Name mmcrnsd - Crea
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mmcrnsd Command Note: This name can
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mmcrnsd Command Location /usr/lpp/m
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mmcrsnapshot Command Options NONE I
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mmcrvsd Command Name mmcrvsd - Crea
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mmcrvsd Command Options dataOnly In
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mmcrvsd Command See also “mmcrnsd
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mmdefedquota Command -u Specifies t
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mmdefquotaoff Command mmlsquota -d
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mmdefquotaon Command Security You m
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mmdefragfs Command Name mmdefragfs
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mmdefragfs Command gpfs60nsd 50688
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mmdelacl Command “mmputacl Comman
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mmdeldisk Command -F DescFile A fil
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mmdelfileset Command Name mmdelfile
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mmdelfileset Command 88 % complete
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mmdelfs Command Examples To delete
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mmdelnode Command Exit status 0 Suc
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mmdelnsd Command Options NONE Exit
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mmdelsnapshot Command When using th
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mmdf Command Exit status 0 Successf
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mmeditacl Command Name mmeditacl -
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mmeditacl Command Exit status 0 Suc
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mmedquota Command Group Name or gro
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mmexportfs Command Name mmexportfs
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mmfsck Command Name mmfsck - Checks
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mmfsck Command -n Specifies a no re
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mmfsck Command See also “mmcheckq
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mmfsctl Command v Modifications to
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mmfsctl Command lunA2 FlashCopy tar
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mmgetacl Command Parameters Filenam
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mmgetstate Command Name The mmgetst
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mmgetstate Command See also “mmch
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mmimportfs Command Parameters Devic
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mmlinkfileset Command Name mmlinkfi
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mmlsattr Command Name mmlsattr - Qu
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mmlscluster Command Name mmlscluste
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mmlsconfig Command Name mmlsconfig
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mmlsdisk Command Name mmlsdisk - Di
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mmlsdisk Command disk driver sector
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mmlsfileset Command Name mmlsfilese
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mmlsfileset Command 3. These comman
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mmlsfs Command -o Additional mount
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mmlsmgr Command Name mmlsmgr - Disp
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mmlsmount Command Name mmlsmount -
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mmlsnsd Command Name mmlsnsd - Disp
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mmlsnsd Command gpfs1 gpfs1nsd 0972
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mmlspolicy Command mmlspolicy fs2 -
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mmlsquota Command When a quota mana
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mmlssnapshot Command Name mmlssnaps
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mmmount Command Name mmmount - Moun
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mmpmon Command Name mmpmon - Manage
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mmpmon Command Use of the -i flag i
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mmpmon Command bytes written: 13946
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mmputacl Command Options -d Specifi
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mmquotaoff Command Name mmquotaoff
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mmquotaon Command Name mmquotaon -
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mmremotecluster Command Name mmremo
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mmremotecluster Command 2. This com
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mmremotefs Command Options -A {yes
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mmrepquota Command Name mmrepquota
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mmrepquota Command *** Report for U
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mmrestorefs Command Exit status 0 S
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mmrestripefile Command Name mmrestr
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mmrestripefile Command See also “
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mmrestripefs Command Assuming that
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mmrestripefs Command See also “mm
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mmrpldisk Command The disk descript
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mmrpldisk Command See also “mmadd
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mmsanrepairfs Command Repairing hyp
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mmshutdown Command When using the r
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mmsnapdir Command nonzero A failure
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mmstartup Command Name mmstartup -
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mmumount Command Name mmumount - Un
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mmunlinkfileset Command Name mmunli
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mmunlinkfileset Command See also
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Table 9. GPFS programming interface
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gpfs_close_inodescan() Subroutine N
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gpfs_cmp_fssnapid() Subroutine Loca
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gpfs_fcntl() Subroutine Name gpfs_f
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gpfs_fcntl() Subroutine fcntlArg.po
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gpfs_fputattrs() Subroutine Name gp
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gpfs_free_fssnaphandle() Subroutine
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gpfs_fssnap_id_t Structure Name gpf
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gpfs_get_fsname_from_fssnaphandle()
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gpfs_get_fssnaphandle_by_name() Sub
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gpfs_get_fssnaphandle_by_path() Sub
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gpfs_get_fssnapid_from_fssnaphandle
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gpfs_get_snapdirname() Subroutine N
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gpfs_get_snapname_from_fssnaphandle
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gpfs_getacl() Subroutine Error stat
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gpfs_iattr_t Structure /* don’t r
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gpfs_ifile_t Structure Name gpfs_if
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gpfs_igetattrs() Subroutine GPFS_E_
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gpfs_igetfilesetname() Subroutine E
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gpfs_igetstoragepool() Subroutine E
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gpfs_iopen() Subroutine Exceptions
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gpfs_iread() Subroutine EPERM The c
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gpfs_ireaddir() Subroutine Examples
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gpfs_ireadlink() Subroutine Locatio
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gpfs_ireadx() Subroutine offset On
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gpfs_next_inode() Subroutine Name g
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gpfs_opaque_acl_t Structure Name gp
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gpfs_open_inodescan() Subroutine No
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gpfs_prealloc() Subroutine Exceptio
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gpfs_putacl() Subroutine Exceptions
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gpfs_quotactl() Subroutine Q_SETQUO
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gpfs_quotaInfo_t Structure Name gpf
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gpfs_seek_inode() Subroutine Locati
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gpfsAccessRange_t Structure Name gp
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gpfsClearFileCache_t Structure Name
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gpfsDataShipMap_t Structure partiti
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gpfsDataShipStart_t Structure flag
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gpfsDataShipStop_t Structure Name g
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gpfsFreeRange_t Structure Name gpfs
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gpfsGetReplication_t Structure Name
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gpfsGetSnapshotName_t Structure Nam
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gpfsMultipleAccessRange_t Structure
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gpfsRestripeData_t Structure Name g
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gpfsSetReplication_t Structure rese
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366 GPFS: Administration and Progra
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mmsdrbackup User exit mmsdrbackup U
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syncfsconfig User exit Name syncfsc
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GPFS exceptions and limitations to
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2455 South Road, Poughkeepsie, NY 1
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metadataOnly Indicates that the dis
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v manager | client - Indicates whet
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v For AIX nodes, see Installing the
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RPM at www.rpm.org/ The Internet En
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commands (continued) mmchfileset 10
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file systems (continued) creating 1
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mmchattr 19, 81 mmchcluster 6, 84 m
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setting access control lists 46 sna
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