https://github.com/shgpavel/test_assignment

YADRO job perf task
https://github.com/shgpavel/test_assignment

c device-mapper linux-kernel

Last synced: about 1 month ago
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YADRO job perf task

• Host: GitHub
• URL: https://github.com/shgpavel/test_assignment
• Owner: shgpavel
• License: other
• Created: 2024-05-17T16:02:02.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-06-13T12:44:29.000Z (5 months ago)
• Last Synced: 2024-09-29T14:42:41.808Z (about 2 months ago)
• Topics: c, device-mapper, linux-kernel
• Language: C
• Homepage:
• Size: 17.6 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
## test_assignment

### Build

   make


### Install

#  insmod dmp.ko


### Test

First create the example device and proxy device by doing

#  dmsetup create zero1 --table "0 _SIZE_ zero" # You should define the _SIZE_

#  dmsetup create dmp1  --table "0 _SIZE_ dmp /dev/mapper/zero1"


Then make sure everything was successfully created with

#  dmsetup ls

Or

$  ls -al /dev/mapper/*


After try to read and write to a proxy device

#  dd if=/dev/random of=/dev/mapper/dmp1 bs=4k count=1

#  dd of=/dev/null if=/dev/mapper/dmp1 bs=4k count=1


For statistics

#  cat /sys/module/dmp/stat/volumes


### Remove

First you need to remove created devices, so run

#  dmsetup remove dmp1 zero1


Then unload the module

#  rmmod dmp

And clean src directory

make clean