How do you disable disk write cache on Ubuntu Core?
Since hdparm is not available, is there another way on core?
I'm using ubuntu core devices in an IoT application where we cannot risk losing data due to loss of power. This can be done on classic ubuntu with hdparm by forcing the drive to write to the disk immediately rather than doing lazy writes via write cache. Otherwise if we lose power, cached writes are lost.
ssd ubuntu-core hdparm
asked Dec 19 at 3:50
toe knife
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Since hdparm is not available, is there another way on core?
I'm using ubuntu core devices in an IoT application where we cannot risk losing data due to loss of power. This can be done on classic ubuntu with hdparm by forcing the drive to write to the disk immediately rather than doing lazy writes via write cache. Otherwise if we lose power, cached writes are lost.
ssd ubuntu-core hdparm
asked Dec 19 at 3:50
toe knife
113
New contributor
toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
Since hdparm is not available, is there another way on core?
I'm using ubuntu core devices in an IoT application where we cannot risk losing data due to loss of power. This can be done on classic ubuntu with hdparm by forcing the drive to write to the disk immediately rather than doing lazy writes via write cache. Otherwise if we lose power, cached writes are lost.
ssd ubuntu-core hdparm
asked Dec 19 at 3:50
toe knife
113
New contributor
toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Since hdparm is not available, is there another way on core?
I'm using ubuntu core devices in an IoT application where we cannot risk losing data due to loss of power. This can be done on classic ubuntu with hdparm by forcing the drive to write to the disk immediately rather than doing lazy writes via write cache. Otherwise if we lose power, cached writes are lost.
ssd ubuntu-core hdparm
ssd ubuntu-core hdparm
asked Dec 19 at 3:50
toe knife
113
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toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked Dec 19 at 3:50
toe knife
113
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edited Dec 21 at 14:34
asked Dec 19 at 3:50
toe knife
113
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asked Dec 19 at 3:50
toe knife
113
asked Dec 19 at 3:50
toe knife
113
113
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toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor
toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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1 Answer
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hdparm can be snapped from classic ubuntu with the following yaml file...
Use this yaml file to generate a .snap with snapcraft. Then install it on ubuntu core with 'snap install name.snap --devmode'. Once installed hdparm can be used as it is on classic ubuntu. To disable write cache on a drive, enter a similar command 'hdparm -W0 /dev/sda' with /dev/sda being the path to your drive.
name: hdparm # you probably want to 'snapcraft register <name>'
version: '0.1' # just for humans, typically '1.2+git' or '1.3.2'
summary: HD Parm
description:
Hard Drive Parmaeters
grade: stable # must be 'stable' to release into candidate/stable channels
confinement: devmode # use 'strict' once you have the right plugs and slots
apps:
hdparm:
command: /sbin/hdparm
parts:
hdparm:
plugin: nil
stage-packages: [hdparm]
answered Dec 19 at 22:10
toe knife
113
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I've expanded on the answer as well as the question.
– toe knife
Dec 21 at 14:39
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
hdparm can be snapped from classic ubuntu with the following yaml file...
Use this yaml file to generate a .snap with snapcraft. Then install it on ubuntu core with 'snap install name.snap --devmode'. Once installed hdparm can be used as it is on classic ubuntu. To disable write cache on a drive, enter a similar command 'hdparm -W0 /dev/sda' with /dev/sda being the path to your drive.
name: hdparm # you probably want to 'snapcraft register <name>'
version: '0.1' # just for humans, typically '1.2+git' or '1.3.2'
summary: HD Parm
description:
Hard Drive Parmaeters
grade: stable # must be 'stable' to release into candidate/stable channels
confinement: devmode # use 'strict' once you have the right plugs and slots
apps:
hdparm:
command: /sbin/hdparm
parts:
hdparm:
plugin: nil
stage-packages: [hdparm]
answered Dec 19 at 22:10
toe knife
113
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toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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I've expanded on the answer as well as the question.
– toe knife
Dec 21 at 14:39
add a comment |
hdparm can be snapped from classic ubuntu with the following yaml file...
Use this yaml file to generate a .snap with snapcraft. Then install it on ubuntu core with 'snap install name.snap --devmode'. Once installed hdparm can be used as it is on classic ubuntu. To disable write cache on a drive, enter a similar command 'hdparm -W0 /dev/sda' with /dev/sda being the path to your drive.
name: hdparm # you probably want to 'snapcraft register <name>'
version: '0.1' # just for humans, typically '1.2+git' or '1.3.2'
summary: HD Parm
description:
Hard Drive Parmaeters
grade: stable # must be 'stable' to release into candidate/stable channels
confinement: devmode # use 'strict' once you have the right plugs and slots
apps:
hdparm:
command: /sbin/hdparm
parts:
hdparm:
plugin: nil
stage-packages: [hdparm]
answered Dec 19 at 22:10
toe knife
113
New contributor
toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I've expanded on the answer as well as the question.
– toe knife
Dec 21 at 14:39
add a comment |
hdparm can be snapped from classic ubuntu with the following yaml file...
Use this yaml file to generate a .snap with snapcraft. Then install it on ubuntu core with 'snap install name.snap --devmode'. Once installed hdparm can be used as it is on classic ubuntu. To disable write cache on a drive, enter a similar command 'hdparm -W0 /dev/sda' with /dev/sda being the path to your drive.
name: hdparm # you probably want to 'snapcraft register <name>'
version: '0.1' # just for humans, typically '1.2+git' or '1.3.2'
summary: HD Parm
description:
Hard Drive Parmaeters
grade: stable # must be 'stable' to release into candidate/stable channels
confinement: devmode # use 'strict' once you have the right plugs and slots
apps:
hdparm:
command: /sbin/hdparm
parts:
hdparm:
plugin: nil
stage-packages: [hdparm]
answered Dec 19 at 22:10
toe knife
113
New contributor
toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
hdparm can be snapped from classic ubuntu with the following yaml file...
Use this yaml file to generate a .snap with snapcraft. Then install it on ubuntu core with 'snap install name.snap --devmode'. Once installed hdparm can be used as it is on classic ubuntu. To disable write cache on a drive, enter a similar command 'hdparm -W0 /dev/sda' with /dev/sda being the path to your drive.
name: hdparm # you probably want to 'snapcraft register <name>'
version: '0.1' # just for humans, typically '1.2+git' or '1.3.2'
summary: HD Parm
description:
Hard Drive Parmaeters
grade: stable # must be 'stable' to release into candidate/stable channels
confinement: devmode # use 'strict' once you have the right plugs and slots
apps:
hdparm:
command: /sbin/hdparm
parts:
hdparm:
plugin: nil
stage-packages: [hdparm]
answered Dec 19 at 22:10
toe knife
113
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edited Dec 21 at 14:38
answered Dec 19 at 22:10
toe knife
113
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answered Dec 19 at 22:10
toe knife
113
answered Dec 19 at 22:10
toe knife
113
113
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toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor
toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
toe knife is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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I've expanded on the answer as well as the question.
– toe knife
Dec 21 at 14:39
add a comment |
I've expanded on the answer as well as the question.
– toe knife
Dec 21 at 14:39
I've expanded on the answer as well as the question.
– toe knife
Dec 21 at 14:39
I've expanded on the answer as well as the question.
– toe knife
Dec 21 at 14:39
add a comment |
toe knife is a new contributor. Be nice, and check out our Code of Conduct.
toe knife is a new contributor. Be nice, and check out our Code of Conduct.
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