GPFS: Administration and Programming Reference - IRA Home

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mmlsnsd Command Name mmlsnsd – Displays the current Network Shared Disk (NSD) information in the GPFS cluster. Synopsis mmlsnsd [-a | -F | -f Device | -d ″DiskName[;DiskName...]″ ] [-L | -m | -M | -X] [-v] Description Use the mmlsnsd command to display the current information for the NSDs belonging to the GPFS cluster. The default is to display information for all NSDs defined to the cluster (-a). Otherwise, you may choose to display the information for a particular file system (-f) or for all disks that do not belong to any file system (-F). Parameters -a Display information for all of the NSDs belonging to the GPFS cluster. This is the default. -f Device The device name of the file system for which you want NSD information displayed. File system names need not be fully-qualified. fs0 is as acceptable as /dev/fs0. -F Display the NSDs that do not belong to any file system in the GPFS cluster. -d DiskName[;DiskName...] Options The name of the NSDs for which you want information displayed. When you enter multiple DiskNames, you must separate them with semicolons and enclose the entire string of disk names in quotation marks: "gpfs3nsd;gpfs4nsd;gpfs5nsd" -L Display the information in a long format that shows the NSD identifier. -m Map the NSD name to its disk device name in /dev on the local node and, if applicable, on the primary and backup NSD server nodes. -M Map the NSD names to its disk device name in /dev on all nodes. This is a slow operation and its usage is suggested for problem determination only. -v Specifies that the output should contain error information, where available. -X Map the NSD name to its disk device name in /dev on the local node and, if applicable, on the primary and backup NSD server nodes, showing the information with extended information in the NSD volume id and the remarks fields. This is a slow operation and is suggested only for problem determination. Exit status 0 Successful completion. nonzero A failure has occurred. Security You must have root authority to issue the mmlsnsd command. You may issue the mmlsnsd command from any node in the GPFS cluster. 216 GPFS: Administration and Programming Reference
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 display the default information for all of the NSDs belonging to the cluster, issue this command: mmlsnsd The system displays information similar to: File system Disk name Primary node Backup node ------------–--------------------------------------—-— gpfsa gpfs16nsd k145n06 k145n07 gpfsa gpfs17nsd k145n06 k145n07 gpfsa gpfs18nsd k145n06 k145n07 gpfsa gpfs19nsd k145n06 k145n07 gpfsa gpfs20nsd k145n06 k145n07 gpfs1 gpfs1nsd (directly attached) gpfs1 gpfs2nsd (directly attached) gpfs1 gpfs3nsd (directly attached) gpfs1 gpfs4nsd (directly attached) 2. To display all of the NSDs attached to the node from which the command is issued, issue this command: mmlsnsd -m The system displays information similar to: Disk name NSD volume ID Device Node name Remarks ------------------------------------------------------------ gpfs16nsd 097284213AA842EC /dev/sdb k145n06 primary node gpfs16nsd 097284213AA842EC /dev/sdb k145n07 backup node gpfs17nsd 097284213AA842EF /dev/sdc k145n06 primary node gpfs17nsd 097284213AA842EF /dev/sdc k145n07 backup node gpfs18nsd 097284213AA842F2 /dev/sdd k145n06 primary node gpfs18nsd 097284213AA842F2 /dev/sdd k145n07 backup node gpfs19nsd 097284213AA842F5 /dev/sde k145n06 primary node gpfs19nsd 097284213AA842F5 /dev/sde k145n07 backup node gpfs20nsd 097284213AA842F7 /dev/sdf k145n06 primary node gpfs20nsd 097284213AA842F7 /dev/sdf k145n07 backup node gpfs1nsd 0972841D3AA8420A - k145n06 (not found) directly attached gpfs2nsd 0972841D3AA8420B - k145n06 (not found) directly attached gpfs3nsd 0972841D3AA8420C - k145n06 (not found) directly attached gpfs4nsd 0972841D3AA8420D - k145n06 (not found) directly attached 3. To display all of the NSDs in the GPFS cluster in extended format, issue this command: mmlsnsd -L The system displays information similar to: File system Disk name NSD volume ID Primary node Backup node --------------------------------------------------------------- gpfsa gpfs16nsd 097284213AA842EC k145n06 k145n07 gpfsa gpfs17nsd 097284213AA842EF k145n06 k145n07 gpfsa gpfs18nsd 097284213AA842F2 k145n06 k145n07 gpfsa gpfs19nsd 097284213AA842F5 k145n06 k145n07 gpfsa gpfs20nsd 097284213AA842F7 k145n06 k145n07 mmlsnsd Command Chapter 8. GPFS commands 217
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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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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 198 and 199: mmfsck Command -n Specifies a no re
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
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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 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
Page 248 and 249: mmpmon Command Name mmpmon - Manage
Page 250 and 251: mmpmon Command Use of the -i flag i
Page 252 and 253: mmpmon Command bytes written: 13946
Page 254 and 255: mmputacl Command Options -d Specifi
Page 256 and 257: mmquotaoff Command Name mmquotaoff
Page 258 and 259: mmquotaon Command Name mmquotaon -
Page 260 and 261: mmremotecluster Command Name mmremo
Page 262 and 263: mmremotecluster Command 2. This com
Page 264 and 265: mmremotefs Command Options -A {yes
Page 266 and 267: mmrepquota Command Name mmrepquota
Page 268 and 269: mmrepquota Command *** Report for U
Page 270 and 271: mmrestorefs Command Exit status 0 S
Page 272 and 273: mmrestripefile Command Name mmrestr
Page 274 and 275: mmrestripefile Command See also “
Page 276 and 277: mmrestripefs Command Assuming that
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Page 280 and 281: mmrpldisk Command The disk descript
Page 282 and 283: mmrpldisk Command See also “mmadd
Page 284 and 285: 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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