GPFS: Administration and Programming Reference - IRA Home

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gpfs_ireadx() Subroutine offset On input, the offset to start the scan for changes. On output, the offset of the changed data, if any was detected. termOffset Read terminates before reading this offset. The caller may specify ia_size from the file’s gpfs_iattr_t or 0 to scan the entire file. hole Pointer to a flag returned to indicated a hole in the file. A value of 0 indicates that the gpfs_ireadx() subroutine returned data in the buffer. A value of 1 indicates that gpfs_ireadx() encountered a hole at the returned offset. Exit status If the gpfs_ireadx() subroutine is successful, it returns the number of bytes read and returned in bufP, or the size of the hole encountered in the file. If the gpfs_ireadx() subroutine is unsuccessful, it returns a value of -1 and sets the global error variable errno to indicate the nature of the error. Exceptions None. Error status EDOM The file system snapshot ID from the iscanId does not match the ifile’s. EINVAL Missing or incorrect parameter. EISDIR The specified file is a directory. ENOMEM Unable to allocate memory for request. ENOSYS The gpfs_ireadx() subroutine is not available. EPERM The caller does not have superuser privileges. ERANGE The file system snapshot ID from the iscanId is more recent than the ifile’s. ESTALE Cached file system information was not valid. GPFS_E_INVAL_IFILE Incorrect ifile parameter. GPFS_E_INVAL_ISCAN Incorrect iscan parameter. Location /usr/lpp/mmfs/lib/libgpfs.a for AIX, /usr/lpp/mmfs/lib/libgpfs.so for Linux 326 GPFS: Administration and Programming Reference
gpfs_iscan_t Structure Name gpfs_iscan_t - Contains a handle for an inode scan of a GPFS file system or snapshot. Library GPFS Library (libgpfs.a for AIX, libgpfs.so for Linux) Structure typedef struct gpfs_iscan gpfs_iscan_t; Description The gpfs_iscan_t structure contains a handle for an inode scan of a GPFS file system or snapshot. Members gpfs_iscan The handle for an inode scan for a GPFS file system or snapshot. Examples For an example using gpfs_iscan_t, see /usr/lpp/mmfs/samples/util/tsbackup.C. Location /usr/lpp/mmfs/lib/libgpfs.a for AIX, /usr/lpp/mmfs/lib/libgpfs.so for Linux Chapter 9. GPFS programming interfaces 327
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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
Page 296 and 297: mmunlinkfileset Command See also
Page 298 and 299: Table 9. GPFS programming interface
Page 300 and 301: gpfs_close_inodescan() Subroutine N
Page 302 and 303: gpfs_cmp_fssnapid() Subroutine Loca
Page 304 and 305: gpfs_fcntl() Subroutine Name gpfs_f
Page 306 and 307: gpfs_fcntl() Subroutine fcntlArg.po
Page 308 and 309: gpfs_fputattrs() Subroutine Name gp
Page 310 and 311: gpfs_free_fssnaphandle() Subroutine
Page 312 and 313: gpfs_fssnap_id_t Structure Name gpf
Page 314 and 315: gpfs_get_fsname_from_fssnaphandle()
Page 316 and 317: gpfs_get_fssnaphandle_by_name() Sub
Page 318 and 319: gpfs_get_fssnaphandle_by_path() Sub
Page 320 and 321: gpfs_get_fssnapid_from_fssnaphandle
Page 322 and 323: gpfs_get_snapdirname() Subroutine N
Page 324 and 325: gpfs_get_snapname_from_fssnaphandle
Page 326 and 327: gpfs_getacl() Subroutine Error stat
Page 328 and 329: gpfs_iattr_t Structure /* don’t r
Page 330 and 331: 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 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 382 and 383: gpfsRestripeData_t Structure Name g
Page 384 and 385: gpfsSetReplication_t Structure rese
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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
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2455 South Road, Poughkeepsie, NY 1
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378 GPFS: Administration and Progra
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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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