6.27 List Devices

list devices [exclude] [more|all]

Print a list of the devices. For each device, display the device name, size, free available space, partitioning type, if it is marked as Shareable for Clustering, and if it is an NSS software RAID device. If no other options are specified, this prints a list of all devices and software RAID devices.

nlvm [-t] list devices [exclude] [more|all]
Command Options
exclude=<raid|nonraid|shared|nonshared|lvm|nonlvm>

Exclude the specified type of devices. This option can be used multiple times to add exclusions for different types. Valid device types are raid, nonraid, shared, nonshared, lvm, or nonlvm.

Example

exclude=raid exclude=nonshared
-t , --terse

Use this NLVM option to format the output for parsing.

more

Prints more information than appears in the standard output. It can be used with or without the -t NLVM option.

Example

more
all

Prints detailed information about each of the devices. This is the same information that is printed for the nlvm list device <device_name> command. It can be used with or without the -t NLVM option.

Example

all
Command Example
nlvm list devices exclude=raid exclude=nonshared exclude=lvm all

Print detailed information for all non-LVM shared devices that are not software RAID devices.

Response Parameters

You can issue the commands with the --terse NLVM option to output the same information in a format that is more easily parsed.

Standard Output

The command returns the following standard information about the devices on the server:

Label

Description

Name

Device name such as sdb or raid1

Size

Total amount of space on the device in KB, MB, GB, or TB

Used

Used space on the device in KB, MB, GB, or TB

Free

Available space on the device in KB, MB, GB, or TB

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

Enabled

Yes or No; whether the RAID is enabled on this node

More Output

The command returns the following additional information about the devices on the server:

Label

Description

RAID

Type (0, 1, or 5) or No; type of NSS RAID device, or not a RAID

Sync

Yes or %; whether the RAID is in sync or percent completed

M:M

Major:Minor numbers, such as 8:112

All Output

If the all option is used, the command returns the same information about each device as is displayed for the nlvm list device <device_name> command. This includes information about its partitions, or about its partitions and segments for RAID devices.

Sample Command Responses
Sample 1: nlvm list devices
 Name        Size      Used      Free  Format Shared RAID Enabled
 sda       20.00GB   19.99GB    1008KB  MSDOS   No    No
 sdb        1.00GB  400.01MB  623.98MB  MSDOS   No    No
 sdc        1.00GB  710.78MB  298.82MB  MSDOS   No    No
 sdd        8.00GB   50.01MB    7.95GB  MSDOS  Yes    No
 rr0      199.96MB  100.01MB   99.95MB  MSDOS   No     0    Yes
 MyRaid1   99.98MB       0KB   99.98MB   None   No     1    Yes
Sample 2: nlvm list devices --terse
 Name=sda Size=20.00GB Used=19.99GB Free=1008KB Format=MSDOS Shared=No RAID=No
 Name=sdb Size=1.00GB Used=400.01MB Free=623.98MB Format=MSDOS Shared=No RAID=No
 Name=sdc Size=1.00GB Used=710.78MB Free=298.82MB Format=MSDOS Shared=No RAID=No
 Name=sdd Size=8.00GB Used=50.01MB Free=7.95GB Format=MSDOS Shared=Yes RAID=No
 Name=rr0 Size=199.96MB Used=100.01MB Free=99.95MB Format=MSDOS Shared=No RAID=0 Enabled=Yes
 Name=MyRaid1 Size=99.98MB Used=0KB Free=99.98MB Format=None Shared=No RAID=1 Enabled=Yes
Sample 3: nlvm list devices more
 Name        Size      Used      Free  Format Shared RAID  Sync  Maj:Min
 sda       20.00GB   19.99GB    1008KB  MSDOS   No    No           8:0
 sdb        1.00GB  400.01MB  623.98MB  MSDOS   No    No           8:16
 sdc        1.00GB  710.78MB  298.82MB  MSDOS   No    No           8:32
 sdd        8.00GB   50.01MB    7.95GB  MSDOS  Yes    No           8:48
 rr0      199.96MB  100.01MB   99.95MB  MSDOS   No     0    Yes  253:15
 MyRaid1   99.98MB       0KB   99.98MB   None   No     1    Yes  253:2
Sample 4: nlvm list devices all
  Name=sda
  Size=20.00GB(41943040) Used=19.99GB(41941024) Free=1008KB(2016)
  Format=MSDOS Shared=No RAID=No M:M=8:0 H:S=255:32
  Partitions on the device:
   Part Type                Size   Sectors  Pool
   sda1 Linux Swap         1.00GB  2103296
   sda2 Linux             15.98GB 33527808
   sda3 Linux              3.00GB  6309888

 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

 Name=sdc
  Size=1.00GB(2097152) Used=710.78MB(1455680) Free=298.82MB(612000)
  Format=MSDOS Shared=No RAID=No M:M=8:32 H:S=255:32
  Partitions on the device:
   Part   Type                Size  Sectors  Pool
   sdc1   Linux LVM        103.57MB  212128
   sdc2   Linux LVM        103.59MB  212160
   sdc3   Linux            103.59MB  212160
   sdc4   DOS Extended     713.20MB 1460640
   sdc5.1 NSS              100.00MB  204800
   sdc7.1 NSS              100.00MB  204800  POOL1
   sdc8.1 NSS Raid         100.00MB  204800
   sdc9.1 NSS              100.00MB  204800  PMOVE_move

 Name=sdd
  Size=8.00GB(16777216) Used=50.01MB(102432) Free=7.95GB(16674784)
  Format=MSDOS Shared=Yes RAID=No M:M=8:48 H:S=255:32
  Partitions on the device:
   Part          Type                Size  Sectors  Pool
   cluster.sbd Cluster           50.00MB  102400

 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

 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