Host related operations
sudo /opt/pwx/bin/pxctl host --help
NAME:
pxctl host - Attach volumes to the host
USAGE:
pxctl host command [command options] [arguments...]
COMMANDS:
attach Attach a volume to the host at a specified path
detach Detach a specified volume from the host
mount Mount a volume on the host
unmount Unmount a volume from the host
OPTIONS:
--help, -h show help
For the sake of these examples, let us use a volume by name “demovolume” that has just been created using a “volume create” CLI.
sudo /opt/pwx/bin/pxctl volume list
ID NAME SIZE HA SHARED ENCRYPTED IO_PRIORITY SCALE STATUS
772733390943400581 demovolume 5 GiB 2 no no LOW 1 up - detached
pxctl host attach
pxctl host attach command is used to attach a volume to a host
sudo /opt/pwx/bin/pxctl host attach demovolume
Volume successfully attached at: /dev/pxd/pxd772733390943400581
Running “volume list” will now show something like:
sudo /opt/pwx/bin/pxctl volume list
ID NAME SIZE HA SHARED ENCRYPTED IO_PRIORITY SCALE STATUS
772733390943400581 demovolume 5 GiB 2 no no LOW 1 up - attached on 172.31.46.119 *
* Data is not local to the node on which volume is attached.
Note: The volume resides on 2 different nodes than the one where it was attached in the above example. Hence the warning.
For an encrypted volume, if you are not using the cluster secret pass in ‘–secret_key <key>’. Otherwise the cluster secret key will be used.
sudo /opt/pwx/bin/pxctl host attach cliencr
Volume successfully attached at: /dev/mapper/pxd-enc1013237432577873530
If you are trying to attach an encrypted volume and if the node in which the encrypted volume is being attached to is not authenticated with the secrets endpoint, then you will get the following error message
sudo /opt/pwx/bin/pxctl host attach vol3
attach: Not authenticated with the secrets endpoint
Ensure that the node is authenticated with the secretes endpoint. Refer to the Encrypted Volumes section.
pxctl host detach
pxctl host detach command is used to detach a volume from a host
sudo /opt/pwx/bin/pxctl host detach demovolume
Volume successfully detached
Running “volume list” will now show something like:
sudo /opt/pwx/bin/pxctl volume list
ID NAME SIZE HA SHARED ENCRYPTED IO_PRIORITY SCALE STATUS
772733390943400581 demovolume 5 GiB 2 no no LOW 1 up - detached
pxctl host mount
pxctl host mount mounts a volume locally on a node at a path, say /mnt/demodir
sudo /opt/pwx/bin/pxctl host mount demovolume /mnt/demodir
Volume demovolume successfully mounted at /mnt/demodir
Running “volume list” will now show something like:
sudo /opt/pwx/bin/pxctl volume list
ID NAME SIZE HA SHARED ENCRYPTED IO_PRIORITY SCALE STATUS
772733390943400581 demovolume 5 GiB 2 no no LOW 1 up - attached on 172.31.46.119 *
* Data is not local to the node on which volume is attached.
and running “volume inspect” on this volume will show something like:
sudo /opt/pwx/bin/pxctl volume inspect demovolume
Volume : 772733390943400581
Name : demovolume
Size : 5.0 GiB
Format : ext4
HA : 2
IO Priority : LOW
Creation time : Feb 27 22:27:36 UTC 2017
Shared : no
Status : up
State : Attached: 5f8b8417-af2b-4ea7-930e-0027f6bbcbd1
Device Path : /dev/pxd/pxd772733390943400581
Reads : 65
Reads MS : 57
Bytes Read : 487424
Writes : 1
Writes MS : 1
Bytes Written : 4096
IOs in progress : 0
Bytes used : 211 MiB
Replica sets on nodes:
Set 0
Node : 172.31.35.130
Node : 172.31.39.201
pxctl host unmount
pxctl host unmount unmounts a volume from a host
sudo /opt/pwx/bin/pxctl host unmount demovolume /mnt/demodir
Volume demovolume successfully unmounted at /mnt/demodir