lsdasd - List DASD devices
Use the lsdasd command to gather information about DASD devices from sysfs and display it in a summary format.
lsdasd syntax
Where:
- -a or --offline
- includes devices that are currently offline.
- -b or --base
- omits PAV alias devices. Lists only base devices.
- -s or --short
- strips the bus ID in the command output down to the four-digit device number.
- -v or --verbose
- Obsolete. This option has no effect on the output.
- -l or --long
- extends the output to include attributes, the UID, and path information.
- -c or --compat
- creates output of this command as with versions earlier than 1.7.0.
- -u or --uid
- includes and sorts output by UID.
- -H or --host_access_list
- shows information about all operating system instances that use this device.
- <device_bus_id>
- limits the output to information about the specified devices only.
- --version
- displays the version of the command.
- -h or --help
- displays out a short help text, then exits. To view the man page, enter man lsdasd.
Examples
- The following command lists all DASD (including offline DASDS):
# lsdasd -a Bus-ID Status Name Device Type BlkSz Size Blocks ============================================================================== 0.0.0190 offline 0.0.0191 offline 0.0.019d offline 0.0.019e offline 0.0.0592 offline 0.0.4711 offline 0.0.4712 offline 0.0.4f2c offline 0.0.4d80 active dasda 94:0 ECKD 4096 4695MB 1202040 0.0.4f19 active dasdb 94:4 ECKD 4096 23034MB 5896800 0.0.4d81 active dasdc 94:8 ECKD 4096 4695MB 1202040 0.0.4d82 active dasdd 94:12 ECKD 4096 4695MB 1202040 0.0.4d83 active dasde 94:16 ECKD 4096 4695MB 1202040 - The following command shows information only for the DASD with device number 0x4d80 and strips the bus ID in the command output down to the device number:
# lsdasd -s 0.0.4d80 Bus-ID Status Name Device Type BlkSz Size Blocks ============================================================================== 4d80 active dasda 94:0 ECKD 4096 4695MB 1202040 - The following command shows only online DASDs in the format of lsdasd
versions earlier than 1.7.0:
# lsdasd -c 0.0.4d80(ECKD) at ( 94: 0) is dasda : active at blocksize 4096, 1202040 blocks, 4695 MB 0.0.4f19(ECKD) at ( 94: 4) is dasdb : active at blocksize 4096, 5896800 blocks, 23034 MB 0.0.4d81(ECKD) at ( 94: 8) is dasdc : active at blocksize 4096, 1202040 blocks, 4695 MB 0.0.4d82(ECKD) at ( 94: 12) is dasdd : active at blocksize 4096, 1202040 blocks, 4695 MB 0.0.4d83(ECKD) at ( 94: 16) is dasde : active at blocksize 4096, 1202040 blocks, 4695 MB - The following command shows the device
geometry, UID, path information, and some of the settings for the DASD with device bus-ID
0.0.4d82:
In the example, three of the installed paths are unused for different reasons:# lsdasd -l 0.0.4d82 0.0.4d82/dasdd/94:12 status: active type: ECKD blksz: 4096 size: 4695MB blocks: 1202040 extent_size: 1113 logical_capacity: 262668 space_allocated: 262668 use_diag: 0 readonly: 0 eer_enabled: 0 erplog: 0 hpf: 1 uid: IBM.75000000010671.4d82.16 fc_security: Encryption paths_installed: 30 31 32 33 3c 3d paths_in_use: 31 32 33 paths_non_preferred: paths_invalid_cabling: 3c paths_cuir_quiesced: 30 paths_invalid_hpf_characteristics: 3d paths_error_threshold_exceeded:- The path with CHPID
3cis not used because of a cabling error to the storage system. This channel path does not connect to the same physical disk space as the other channel path for this device. - The path with CHPID
30is not used because of a control-unit initiated reconfiguration (CUIR). - The path with CHPID
3dis not used because its High Performance FICON® characteristics do not match with the paths currently in use.
- The path with CHPID
- The following command shows
whether other operating system instances access device 0.0.bf45:
Status values are:# lsdasd -H bf45 Host information for 0.0.bf45 Path-Group-ID LPAR CPU FL Status Sysplex Max_Cyls Time ================================================================================ 88000d29e72964ce8570b8 0d 29e7 50 ON TRX1LNX1 268434453 0 88000e29e72964ce8570c3 0e 29e7 50 ON 268434453 0 88000f29e72964ce8570d1 0f 29e7 50 ON 268434453 0 88011d29e72964ce8570d4 1d 29e7 50 ON 268434453 0 88011e29e72964ce8570d9 1e 29e7 50 ON 268434453 0 88011f29e72964ce8570e3 1f 29e7 50 ON 268434453 0 88022d29e72964ce8570e6 2d 29e7 50 ON 268434453 0 88022e29e72964ce8570ea 2e 29e7 50 ON 268434453 0 88022f29e72964ce8570f1 2f 29e7 50 ON 268434453 0 88033d29e72964ce8570f7 3d 29e7 50 ON 268434453 0 88033e29e72964ce8570fe 3e 29e7 50 ON 268434453 0 88033f29e72964ce85710e 3f 29e7 50 ON 268434453 0 80004229e72964ce7dce74 42 29e7 00 OFF 65520 0 80004a29e72964ce7db60d 4a 29e7 00 OFF 65520 0 80003c29e72964ce8481a6 3c 29e7 00 OFF 65520 0 80004629e72964ce7f1c13 46 29e7 70 ON-RSV 65520 1424174863- ON
- The device is online.
- OFF
- The device is offline.
- ON-RSV
- The device is online and reserved.
- OFF-RSV
- The device is offline and reserved by an operating system instance in another LPAR.
- Path-group-ID
- A 22-digit hexadecimal number assigned by the operating system when setting the DASD online. This ID uniquely identifies the operating system to the storage server.
- LPAR
- A 2-digit LPAR ID.
- CPU
- A 4-digit CPU ID, as it is defined in the HMC or can be read from /proc/cpuinfo.
- FL
- A 2-digit hexadecimal flag. 0x20 means reserved, 0x50 means online.
- Sysplex
- The 8-character EBCDIC name of the SYSPLEX.
- MAX_CYLS
- The maximum number of cylinders per volume that are supported by the host.
- TIME
- Time the device has been reserved in seconds since July 1, 1970.
- In this example, first all DASDs are listed, then the
details for a thinly provisioned DASD, marked as ESE, is
listed:
# lsdasd Bus-ID Status Name Device Type BlkSz Size Blocks ================================================================================ 0.0.95e0 alias ECKD 0.0.95e1 alias ECKD 0.0.3300 active dasda 94:0 ECKD 4096 21129MB 5409180 0.0.95d0 active dasdb 94:4 ECKD (ESE) 4096 42259MB 10818360 0.0.95d1 n/f dasdc 94:8 ECKD (ESE) # lsdasd -l 95d0 0.0.95d0/dasdb/94:4 status: active type: ECKD (ESE) blksz: 4096 size: 42259MB blocks: 10818360 extent_size: 1113 logical_capacity: 60102 space_allocated: 27825 use_diag: 0 readonly: 0 eer_enabled: 0 erplog: 0 hpf: 1 uid: IBM.750000000ABT31.9500.d0 fc_security: Encryption paths_installed: 38 39 3a 3b paths_in_use: 38 39 3a 3b paths_non_preferred: paths_invalid_cabling: paths_cuir_quiesced: paths_invalid_hpf_characteristics: paths_error_threshold_exceeded: