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If it becomes necessary to stop GPFS, you can do so from the command line by issuing the mmshutdown command: mmshutdown -a The system displays information similar to: Thu Aug 12 13:10:40 EDT 2004: 6027-1341 mmshutdown: Starting force unmount of GPFS file systems k164n05.kgn.ibm.com: forced unmount of /fs1 k164n04.kgn.ibm.com: forced unmount of /fs1 k164n06.kgn.ibm.com: forced unmount of /fs1 Thu Aug 12 13:10:45 EDT 2004: 6027-1344 mmshutdown: Shutting down GPFS daemons k164n04.kgn.ibm.com: Shutting down! k164n06.kgn.ibm.com: Shutting down! k164n05.kgn.ibm.com: Shutting down! k164n04.kgn.ibm.com: ’shutdown’ command about to kill process 49682 k164n05.kgn.ibm.com: ’shutdown’ command about to kill process 28194 k164n06.kgn.ibm.com: ’shutdown’ command about to kill process 30782 Thu Aug 12 13:10:54 EDT 2004: 6027-1345 mmshutdown: Finished See the “mmshutdown Command” on page 265 for complete usage information. 12 GPFS: Administration and Programming Reference
Chapter 3. Managing file systems See the General Parallel File System: Concepts, Planning, and Installation Guide and the mmcrfs command for information on how to create GPFS file systems. File system management tasks include: 1. “Mounting a file system” 2. “Unmounting a file system” on page 14 3. “Deleting a file system” on page 15 4. “Determining which nodes have a file system mounted” on page 15 5. “Checking and repairing a file system” on page 16 6. “Listing file system attributes” on page 17 7. “Modifying file system attributes” on page 18 8. “Querying and changing file replication attributes” on page 18 9. “Restriping a GPFS file system” on page 19 10. “Querying file system space” on page 21 11. “Querying and reducing file system fragmentation” on page 22 12. “Backing up a file system” on page 23 13. Managing filesets, storage pools and policies. See Policy-based data management for GPFS in General Parallel File System: Advanced Administration Guide. Mounting a file system You must explicitly mount a GPFS file system if: 1. This is the first time the file system is being mounted after its creation. 2. You specified not to automatically mount (-A no) the file system when you created it. If you allowed the default value for the automatic mount option (-A yes) when you created the file system, then you do not need to use this procedure after restarting GPFS on the nodes. To mount a GPFS file system, enter: mmmount device where device is the name of the file system. For example, to mount the file system fs1, enter: mmmount fs1 Mounting a file system on multiple nodes To mount file system fs1 on all nodes in the GPFS cluster, issue this command: mmmount fs1 -a To mount a file system only on a specific set of nodes, use the -N flag of the mmmount command. Note: When using GPFS file systems, you are not required to use the GPFS mmmount or mmumount commands. The operating system mount and umount (or unmount) commands also work. GPFS-specific mount options GPFS-specific mount options can be specified with the -o parameter on the mmchfs, mmremotefs, mmmount and mount commands. Options specified with the mmchfs and mmremotefs commands are © Copyright IBM Corp. 1998, 2006 13
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 24 and 25: Remote shell command: /usr/bin/rsh
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 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
Page 74 and 75: general suggestion is for the compu
Page 80 and 81: 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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