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gpfsRestripeData_t Structure Name gpfsRestripeData_t – Restripes a file’s data blocks. Library GPFS Library (libgpfs.a for AIX, libgpfs.so for Linux) Structure typedef struct { int structLen; int structType; int options; int reserved; } gpfsRestripeData_t Description The gpfsRestripeData_t structure is used to restripe a file’s data blocks to updates its replication and migrate its data. The data movement is always done immediately. Members structLen Length of the gpfsRestripeData_t structure. structType Structure identifier GPFS_FCNTL_RESTRIPE_DATA. options Options for restripe command. See mmrestripefs command for complete definitions. GPFS_FCNTL_RESTRIPE_M Migrate critical data off of suspended disks. GPFS_FCNTL_RESTRIPE_R Replicate data against subsequent failure. GPFS_FCNTL_RESTRIPE_P Place file data in assigned storage pool. GPFS_FCNTL_RESTRIPE_B Rebalance file data. reserved Must be set to 0. Location /usr/lpp/mmfs/lib/libgpfs.a for AIX, /usr/lpp/mmfs/lib/libgpfs.so for Linux 362 GPFS: Administration and Programming Reference
gpfsSetReplication_t Structure Name gpfsSetReplication_t – Sets a file’s replication factors. Library GPFS Library (libgpfs.a for AIX, libgpfs.so for Linux) Structure typedef struct { int structLen; int structType; int metadataReplicas; int maxMetadataReplicas; int dataReplicas; int maxDataReplicas; int errReason; int errValue1; int errValue2; int reserved; } gpfsSetReplication_t Description The gpfsGetReplication_t structure is used to set a file’s replication factors. However, the directive does not cause the file to be restriped immediately. Instead, the caller must append a gpfsRestripeData_t directive or invoke an explicit restripe using the mmrestripefs or mmrestripefile command. Members structLen Length of the gpfsSetReplication_t structure. structType Structure identifier GPFS_FCNTL_SET_REPLICATION. metadataReplicas Specifies how many copies of the file system’s metadata to create. Enter a value of 1 or 2, but not greater than the value of the maxMetadataReplicas attribute of the file. A value of 0 indicates not to change the current value. maxMetadataReplicas The maximum number of copies of indirect blocks for a file. Space is reserved in the inode for all possible copies of pointers to indirect blocks. Valid values are 1 and 2, but cannot be less than DefaultMetadataReplicas. The default is 1. A value of 0 indicates not to change the current value. dataReplicas Specifies how many copies of the file data to create. Enter a value of 1 or 2, but not greater than the value of the maxDataReplicas attribute of the file. A value of 0 indicates not to change the currant value. metadataReplicas The maximum number of copies of data blocks for a file. Space is reserved in the inode and indirect blocks for all possible copies of pointers to data blocks. Valid values are 1 and 2 but cannot be less than DefaultDataReplicas. The default is 1. A value of 0 indicates not to change the current value. errReason Returned reason for request failure. Defined below. errValue1 Returned value depending upon errReason. errValue2 Returned value depending upon errReason. Chapter 9. GPFS programming interfaces 363
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General Parallel File System Admini
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Note: Before using this information
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Chapter 4. Managing disks . . . . .
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mmrestripefile Command . . . . . .
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viii GPFS: Administration and Progr
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x GPFS: Administration and Programm
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Table 1. Typographic conventions (c
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- The mmmount and mmumount commands
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- The local cluster no longer needs
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xviii GPFS: Administration and Prog
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2 GPFS: Administration and Programm
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Remote shell command: /usr/bin/rsh
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v A node being deleted cannot be th
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You may be able to tune your cluste
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The system displays information sim
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If it becomes necessary to stop GPF
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ecorded in the GPFS configuration f
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Checking and repairing a file syste
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-j scatter Block allocation type -D
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Restriping offers the opportunity t
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See the “mmdf Command” on page
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2. The TSM client code must be inst
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26 GPFS: Administration and Program
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gpfs3nsd 0903C1573F2AD7B6 /dev/sdb1
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12 % complete on Fri Feb 3 16:02:39
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suspended Indicates that data is to
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v You must identify the disks by th
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To disable quota management: 1. Iss
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During the normal operation of file
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The system displays output similar
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Each GPFS file or directory has an
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group::rwx- #effective:rw-- other::
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2. A Directory ACL is similar to th
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This ACL shows four ACL entries (an
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general suggestion is for the compu
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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
Page 332 and 333: gpfs_igetattrs() Subroutine GPFS_E_
Page 334 and 335: gpfs_igetfilesetname() Subroutine E
Page 336 and 337: gpfs_igetstoragepool() Subroutine E
Page 338 and 339: gpfs_iopen() Subroutine Exceptions
Page 340 and 341: gpfs_iread() Subroutine EPERM The c
Page 342 and 343: gpfs_ireaddir() Subroutine Examples
Page 344 and 345: gpfs_ireadlink() Subroutine Locatio
Page 346 and 347: gpfs_ireadx() Subroutine offset On
Page 348 and 349: gpfs_next_inode() Subroutine Name g
Page 350 and 351: gpfs_opaque_acl_t Structure Name gp
Page 352 and 353: gpfs_open_inodescan() Subroutine No
Page 354 and 355: gpfs_prealloc() Subroutine Exceptio
Page 356 and 357: gpfs_putacl() Subroutine Exceptions
Page 358 and 359: gpfs_quotactl() Subroutine Q_SETQUO
Page 360 and 361: gpfs_quotaInfo_t Structure Name gpf
Page 362 and 363: gpfs_seek_inode() Subroutine Locati
Page 364 and 365: gpfsAccessRange_t Structure Name gp
Page 366 and 367: gpfsClearFileCache_t Structure Name
Page 368 and 369: gpfsDataShipMap_t Structure partiti
Page 370 and 371: gpfsDataShipStart_t Structure flag
Page 372 and 373: gpfsDataShipStop_t Structure Name g
Page 374 and 375: gpfsFreeRange_t Structure Name gpfs
Page 376 and 377: gpfsGetReplication_t Structure Name
Page 378 and 379: gpfsGetSnapshotName_t Structure Nam
Page 380 and 381: gpfsMultipleAccessRange_t Structure
Page 384 and 385: gpfsSetReplication_t Structure rese
Page 386 and 387: 366 GPFS: Administration and Progra
Page 388 and 389: mmsdrbackup User exit mmsdrbackup U
Page 390 and 391: syncfsconfig User exit Name syncfsc
Page 392 and 393: GPFS exceptions and limitations to
Page 396 and 397: 2455 South Road, Poughkeepsie, NY 1
Page 400 and 401: metadataOnly Indicates that the dis
Page 402 and 403: v manager | client - Indicates whet
Page 406 and 407: v For AIX nodes, see Installing the
Page 408 and 409: RPM at www.rpm.org/ The Internet En
Page 410 and 411: commands (continued) mmchfileset 10
Page 412 and 413: file systems (continued) creating 1
Page 414 and 415: mmchattr 19, 81 mmchcluster 6, 84 m
Page 416 and 417: setting access control lists 46 sna
Page 420: Readers’ Comments — We’d Like
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