Roopa Prabhu 09b1b7fb0f start-networking: introduce state lock file /run/network/ifstatelock in ...

non-persistant storage

This is a reimport of missing peices of commit
f819c3602e56 in 2.5cl ifupdown2.

commit log from 2.5cl:
Introduce a lock file in non-persistent storage
/run/network/ifstatelock to make sure the state
file in persistent storage is cleaned up correctly

ifupdown2 state file was moved to /var/tmp because /var/tmp was
tmpfs and was large enough (100MB) for the state file. But it
appears it has changed (or is not consistent) across all platforms.
We can move it under /run, but /run again size varies on various
platforms and it is too small on some platforms.

This patch:
- continues to keep the ifupdown2 state file under /var/tmp (because
  it needs the space)
- ntroduces a second level /run/network/ifstatelock file that stays
  on non-persistant storage and is used to delete the state file at
  /boot up

Closes: CM-9573, CM-7774
Review: CCR-3623 (original review)
Tested-by: Mallikarjuna rao Uppalapati <mallik@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>

2016-02-29 16:22:25 -08:00

3.3 KiB

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