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mmfsck Command -n Specifies a no response to all prompts from the mmfsck command. The option reports inconsistencies but it does not change the file system. To save this information, redirect it to an output file when you issue the mmfsck command. -o Specifies that the file system can be mounted during the operation of the mmfsck command. Online mode does not perform a full file system consistency check, but blocks marked as allocated that do not belong to a file are recovered. The -c and -o flags are mutually exclusive. -y Specifies a yes response to all prompts from the mmfsck command. Use this option only on severely damaged file systems. It allows the mmfsck command to take any action necessary for repairs. -t Directory Specifies the directory to be used for temporary storage during mmfsck command processing. The default directory is /tmp. The minimum space required (in byes) is equal to the maximum number of inodes in the file system multiplied by 8. -v Specifies the output is verbose. -V Specifies the output is verbose and contain information for debugging purposes. Exit status 0 Successful completion. 2 The command was interrupted before it completed checks or repairs. 4 The command changed the file system and it must now be restarted. 8 The file system contains damage that has not been repaired. Security You must have root authority to run the mmfsck command. You may issue the mmfsck command from any node in the GPFS cluster. When using the rcp and rsh commands for remote communication, a properly configured .rhosts file must exist in the root user’s home directory on each node in the GPFS cluster. If you have designated the use of a different remote communication program on either the mmcrcluster or the mmchcluster command, you must ensure: 1. Proper authorization is granted to all nodes in the GPFS cluster. 2. The nodes in the GPFS cluster can communicate without the use of a password, and without any extraneous messages. Examples 1. To run the mmfsck command on the fs1 file system, receive a report, but not fix inconsistencies, issue this command: mmfsck fs1 -n The system displays information similar to: Checking "fs1" Checking inodes Checking inode map file Checking directories and files Checking log files Checking extended attributes file Checking allocation summary file Checking policy file Validated policy 'for stripe group fs1': parsed 3 Placement 178 GPFS: Administration and Programming Reference
Rules, 0 Migrate/Delete/Exclude Rules Checking filesets metadata Checking file reference counts Checking file system replication status 1212416 inodes 87560 allocated 0 repairable 0 repaired 0 damaged 0 deallocated 0 orphaned 0 attached 7211746 subblocks 227650 allocated 0 unreferenced 0 deletable 0 deallocated 44504 addresses 0 suspended File system is clean. mmfsck found no inconsistencies in this file system. 2. To run the mmfsck command on the /dev/fs2 file system, receive a report, and fix inconsistencies, issue this command: mmfsck /dev/fs2 -y The system displays information similar to: Checking "/dev/fs2" Checking inodes Checking inode map file Checking directories and files Checking log files Checking extended attributes file Checking file reference counts File inode 6912 is not referenced by any directory. Reattach inode to lost+found? yes Checking file system replication status 33792 inodes 46 allocated 0 repairable 0 repaired 0 damaged 0 deallocated 1 orphaned 1 attached 3332520 subblocks 19762 allocated 0 unreferenced 0 deletable 0 deallocated 728 addresses 0 suspended File system is clean. mmfsck Command Chapter 8. GPFS commands 179
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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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Page 150 and 151: mmcrnsd Command Location /usr/lpp/m
Page 152 and 153: mmcrsnapshot Command Options NONE I
Page 154 and 155: mmcrvsd Command Name mmcrvsd - Crea
Page 156 and 157: mmcrvsd Command Options dataOnly In
Page 158 and 159: mmcrvsd Command See also “mmcrnsd
Page 160 and 161: mmdefedquota Command -u Specifies t
Page 162 and 163: mmdefquotaoff Command mmlsquota -d
Page 164 and 165: mmdefquotaon Command Security You m
Page 166 and 167: mmdefragfs Command Name mmdefragfs
Page 168 and 169: mmdefragfs Command gpfs60nsd 50688
Page 170 and 171: mmdelacl Command “mmputacl Comman
Page 172 and 173: mmdeldisk Command -F DescFile A fil
Page 174 and 175: mmdelfileset Command Name mmdelfile
Page 176 and 177: mmdelfileset Command 88 % complete
Page 178 and 179: mmdelfs Command Examples To delete
Page 180 and 181: mmdelnode Command Exit status 0 Suc
Page 182 and 183: mmdelnsd Command Options NONE Exit
Page 184 and 185: mmdelsnapshot Command When using th
Page 186 and 187: mmdf Command Exit status 0 Successf
Page 188 and 189: mmeditacl Command Name mmeditacl -
Page 190 and 191: mmeditacl Command Exit status 0 Suc
Page 192 and 193: mmedquota Command Group Name or gro
Page 194 and 195: mmexportfs Command Name mmexportfs
Page 196 and 197: mmfsck Command Name mmfsck - Checks
Page 200 and 201: mmfsck Command See also “mmcheckq
Page 202 and 203: mmfsctl Command v Modifications to
Page 204 and 205: mmfsctl Command lunA2 FlashCopy tar
Page 206 and 207: mmgetacl Command Parameters Filenam
Page 208 and 209: mmgetstate Command Name The mmgetst
Page 210 and 211: mmgetstate Command See also “mmch
Page 212 and 213: mmimportfs Command Parameters Devic
Page 214 and 215: mmlinkfileset Command Name mmlinkfi
Page 216 and 217: mmlsattr Command Name mmlsattr - Qu
Page 218 and 219: mmlscluster Command Name mmlscluste
Page 220 and 221: mmlsconfig Command Name mmlsconfig
Page 222 and 223: mmlsdisk Command Name mmlsdisk - Di
Page 224 and 225: mmlsdisk Command disk driver sector
Page 226 and 227: mmlsfileset Command Name mmlsfilese
Page 228 and 229: mmlsfileset Command 3. These comman
Page 230 and 231: mmlsfs Command -o Additional mount
Page 232 and 233: mmlsmgr Command Name mmlsmgr - Disp
Page 234 and 235: mmlsmount Command Name mmlsmount -
Page 236 and 237: mmlsnsd Command Name mmlsnsd - Disp
Page 238 and 239: mmlsnsd Command gpfs1 gpfs1nsd 0972
Page 240 and 241: mmlspolicy Command mmlspolicy fs2 -
Page 242 and 243: mmlsquota Command When a quota mana
Page 244 and 245: mmlssnapshot Command Name mmlssnaps
Page 246 and 247: 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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