6.26 List Device

list device <device_name>

Print the details of a specified device.

nlvm [nlvm_options] list device  <device_name>

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

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 sdb
 Name=sdb
  Size=1.00GB(2097152) Used=400.01MB(819232) Free=623.98MB(1277920)
  Format=MSDOS Shared=No RAID=No M:M=8:16 H:S=255:32
  Partitions on the device:
   Part   Type                Size  Sectors  Pool
   sdb1.1 NSS              100.00MB  204800  PMOVE
   sdb1.2 NSS              100.00MB  204800
   sdb1.3 NSS              100.00MB  204800  BIGLONGPOOLNAME
   sdb1.4 NSS Raid         100.00MB  204800

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

nlvm list device MyRaid1
 Name=MyRaid1
  Size=99.98MB(204768) Used=0KB(0) Free=99.98MB(204768)
  Format=None Shared=No RAID=1 Sync=Yes M:M=253:2 H:S=255:32
  Segs=2 Enbl=Yes
  Segments of the RAID:
   Segment Name   Device     Size  Sectors  Sync
      0    sdb1.2 sdb     100.00MB  204800   Yes
      1    sdc5.1 sdc     100.00MB  204800   Yes

Sample 3: NSS RAID 0 Device

nlvm list device rr0
 Name=rr0
  Size=199.96MB(409536) Used=100.01MB(204832) Free=99.95MB(204704)
  Format=MSDOS Shared=No RAID=0 Sync=Yes M:M=253:15 H:S=255:32
  Segs=2 Enbl=Yes Missing=None Stripe=64k
  Segments of the RAID:
   Segment Name   Device     Size  Sectors
      0    sdb1.4 sdb     100.00MB  204800
      1    sdc8.1 sdc     100.00MB  204800
  Partitions on the device:
   Part    Type                Size  Sectors  Pool
   rr0p1.1 NSS               50.00MB  102400
   rr0p1.2 NSS               50.00MB  102400  RRPOOL