6.28 List Device

Command Option

device_name

Mandatory. Specify the desired device.

Example

sdb

Command Example

nlvm list device sdb

Print the details for the /dev/sdb device.

Response Parameters

The device details include the following values. Most labels are self-explanatory.

Label	Description
Name	Device name such as sdb or raid1
Size	Total amount of space on the device in KB, MB, GB, or TB, and the number of whole sectors in that space Size=623.91MB (1277773)
Used	Used space on the device in KB, MB, GB, or TB, and the number of whole sectors in that space.
Free	Available space on the device in KB, MB, GB, or TB, and the number of whole sectors in that space
Format	MSDOS, GPT, CSM (legacy EVMS Cluster Segment Manager), LVM (clustered Linux LVM volume), None (not initialized)
Shared	Yes or No; whether this device is marked as Shareable for Clustering
RAID	Yes or No; whether this is an NSS software RAID device
M:M	Major:Minor numbers, such as 8:112
H:S	Heads:Sectors geometry per track, such as 255:32
SectorSize (logical/physical)	Logical or physical sector size of a device
Provisioning	Thick or Thin provisioning type

If the device contains partitions, it provides the following information:

Label	Description
Part Partition=	Partition name such as sdb1.1, sdc2, or cluster.sbd
Type	Partition type, including NSS, NSS RAID, SBD, Linux, Linux_swap, LVM
Size	Amount of space allocated to the partition in KB, MB, GB, or TB
Sectors	Number of whole sectors allocated to the partition
Pool	If the partition is the NSS type, the name of the pool that resides on the partition (if any)

For NSS software RAID devices, it provides the following information:

Label	Description
RAID	No or RAID type (0, 1, or 5)
Sync	Yes or %; whether the RAID is in sync or if a sync is in progress
Segs	Number of segments defined for the RAID
Enbl	Yes or No; whether the RAID is enabled on this node
Missing	Segment number (if any) that is missing in the RAID
Stripe	RAID stripe size in bytes (typically KB) for RAID types 0 and 5

For RAID segments, it provides the following information:

Label	Description
Segment	Segment index number
Name	Segment name, such as sdb1.4
Device	Name of the device that contains the segment, such as sdb
Size	Segment size in KB, MB, GB, or TB
Sectors	Number of whole sectors allocated to the partition

Sample Command Responses

Sample 1: Standard Device

nlvm list device sdf
 Name=sdf
  Size=1.63TB(3515088896) Used=801.00GB(1679818816) Free=875.12GB(1835269816)
  Format=GPT Shared=Yes RAID=No M:M=8:80 H:S=255:32 SectorSize(logical/physical)=4096b/4096b Provisioning=Thin
  Partitions on the device:
   Part   Type                Size     Sectors  Pool
   sdf1.1 NSS              500.00GB 1048576000  DATA
   sdf1.2 NSS              300.00GB  629145600  WEB
   sdf1.3 NSS                1.00GB    2097152  DATA3

Sample 2: NSS RAID 1 (Mirror) Device (not initialized)

nlvm list device RD1
 Name=RD1
  Size=1023.98MB(2097120) Used=1023.98MB(2097120) Free=0KB(0)
  Format=None Shared=Yes RAID=1 Sync=NoEbl M:M=254:3 H:S=255:32 SectorSize(logical/physical)=4096b/4096b Provisioning=Thin
  Segs=2 Enbl=No
  Segments of the RAID:
   Segment Name   Device     Size  Sectors  Sync
      0    sde1.1 sde       1.00GB 2097152 NoEbl
      1    sdf1.3 sdf       1.00GB 2097152 NoEbl

Sample 3: NSS RAID 0 Device

nlvm list device MYRAID0
  Name=MYRAID0
  Size=15.00GB(31457280) Used=10.00GB(20971552) Free=4.99GB(10485728)
  Format=MSDOS Shared=Yes RAID=0 Sync=NoEbl M:M=254:4 H:S=255:32 SectorSize(logical/physical)=512b/512b Provisioning=Thick
  Segs=3 Enbl=No Missing=None Stripe=64k
  Segments of the RAID:
   Segment Name   Device     Size   Sectors
      0    sdj1.1 sdj       5.00GB 10485792
      1    sdi1.1 sdi       5.00GB 10485792
      2    sdh1.1 sdh       5.00GB 10485792
  Partitions on the device:
   Part        Type                Size   Sectors  Pool
   MYRAID0p1.1 NSS               10.00GB 20971520  DATA4