[OpenWrt-Devel] [RFC PATCH] build: re-enable parallelism for mksquashfs

Daniel Santos daniel.santos at pobox.com
Wed Nov 7 20:20:31 EST 2018

On 11/07/2018 01:52 PM, Felix Fietkau wrote:
> On 2018-11-05 00:19, Daniel Santos wrote:
>> This was disabled by commit dcd0e4a6727611f03eb3d3a75f073235f5f1229c due
>> to a threading bug back in 2009.  The specifics of the bug are not given
>> in the commit message and squashfs-tools has had several updates to it's
>> parallelism since this time.  There are currently no open issues related
>> to parallelism in their issue tracker:
>> https://github.com/plougher/squashfs-tools/issues
>> It now "works for me" with 16 threads, and while this is a terrible test
>> for a race condition I still propose we remove this work-around
>> unless and until we have specific knowledge of a current bug.
>> Signed-off-by: Daniel Santos <daniel.santos at pobox.com>
> Are the images still reproducible after that change?
> If I remember correctly, threading would break that.
> - Felix

Hello.  I'm not sure what you mean by the images being reproducible. 
I've been building with TARGET_ROOTFS_SQUASHFS=y and
TARGET_ROOTFS_SQUASHFS=256 for a few weeks now without any problem.  I'm
presuming they've fixed it, but I didn't see specific mention of this
bug in their github issue tracker.  They may have discussed it elsewhere
prior to porting to github.


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