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https://issues.apache.org/jira/browse/MESOS-7237?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jie Yu updated MESOS-7237:
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Priority: Critical (was: Major)
> Enabling cgroups_limit_swap can lead to "invalid argument" error.
> -----------------------------------------------------------------
>
> Key: MESOS-7237
> URL: https://issues.apache.org/jira/browse/MESOS-7237
> Project: Mesos
> Issue Type: Bug
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Environment: CentOS 7.
> Reporter: Jie Yu
> Priority: Critical
>
> This is related to MESOS-2128. Looks like the redhat doc linked in that
> ticket is not accurate. `memory.limit_in_bytes` has to be less than or equal
> to `memory.memsw.limit_in_bytes`. Otherwise, the kernel is gonna throw
> EINVAL. Here is the validation with a box that has swap disabled:
> {noformat}
> [root@ip-10-10-0-120 test]# pwd
> /sys/fs/cgroup/memory/test
> [root@ip-10-10-0-120 test]# sleep 1000000 &
> [1] 23121
> [root@ip-10-10-0-120 test]# echo 23121 > tasks
> [root@ip-10-10-0-120 test]# cat tasks
> 23121
> [root@ip-10-10-0-120 test]# cat memory.limit_in_bytes
> 9223372036854771712
> [root@ip-10-10-0-120 test]# cat memory.memsw.limit_in_bytes
> 9223372036854771712
> [root@ip-10-10-0-120 test]# echo 3000000 > memory.limit_in_bytes
> [root@ip-10-10-0-120 test]# echo 3000000 > memory.memsw.limit_in_bytes
> [root@ip-10-10-0-120 test]# echo 100000000 > memory.limit_in_bytes
> bash: echo: write error: Invalid argument
> [root@ip-10-10-0-120 test]# cat /proc/swaps
> Filename Type Size Used
> Priority
> {noformat}
> {noformat}
> [root@ip-10-10-0-120 test]# sleep 100000 &
> [1] 31363
> [root@ip-10-10-0-120 test]# echo 31363 > tasks
> [root@ip-10-10-0-120 test]# echo 3000000 > memory.memsw.limit_in_bytes
> bash: echo: write error: Invalid argument
> [root@ip-10-10-0-120 test]# echo 3000000 > memory.limit_in_bytes
> [root@ip-10-10-0-120 test]# echo 3000000 > memory.memsw.limit_in_bytes
> [root@ip-10-10-0-120 test]# echo 100000000 > memory.memsw.limit_in_bytes
> [root@ip-10-10-0-120 test]# echo 100000000 > memory.limit_in_bytes
> [root@ip-10-10-0-120 test]# cat memory.limit_in_bytes
> 99999744
> [root@ip-10-10-0-120 test]# cat memory.memsw.limit_in_bytes
> 99999744
> {noformat}
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