[gentoo-catalyst] Re: sem_open bug building python

["Rick \"Zero_Chaos\" Farina" <zerochaos@gentoo.org>]

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Resending to gentoo-catalyst because I'm stupid.

- -Zero

On 01/01/2014 03:48 PM, Rick "Zero_Chaos" Farina wrote:
> Team,
> 
> My builds just started failing with a known issue while building
> python. A patch was written by blueness (and backported by
> dol-sen), however, I'd like to discuss the implementation and get
> this fixed before we cut the 2.0.16 release.  Here is the patch as
> it stands:
> 
> X-Git-Url: 
> http://git.overlays.gentoo.org/gitweb/?p=proj%2Fcatalyst.git;a=blobdiff_plain;f=modules%2Fgeneric_stage_target.py;h=9edafe99f83a8a6f4f1ef8e60f2b54e59dc95963;hp=848aca2f8616574ce1a8cdc0d1c4cf33c6620bb8;hb=648c9cc9bfdf88e3612399f2cc9bed9a3bae17f5;hpb=5fb71eb045f0b1b8252b85ce9e8042c87a9bdb1a
>
>  diff --git a/modules/generic_stage_target.py 
> b/modules/generic_stage_target.py index 848aca2..9edafe9 100644 ---
> a/modules/generic_stage_target.py +++
> b/modules/generic_stage_target.py @@ -174,16 +174,21 @@ class
> generic_stage_target(generic_target):
> 
> """ Setup our mount points """ if "SNAPCACHE" in self.settings: -
>  
> self.mounts=["/proc","/dev","/usr/portage","/usr/portage/distfiles","/var/tmp/portage"]
>
> 
+			self.mounts=["/proc", "/dev", "/usr/portage",
> +				"/usr/portage/distfiles", "/var/tmp/portage"] 
> self.mountmap={"/proc":"/proc","/dev":"/dev","/dev/pts":"/dev/pts",\
>
> 
"/usr/portage":self.settings["snapshot_cache_path"]+"/portage",\
> - 
> "/usr/portage/distfiles":self.settings["distdir"],"/var/tmp/portage":"tmpfs"}
>
> 
+			
> "/usr/portage/distfiles":self.settings["distdir"],"/var/tmp/portage":"tmpfs",
>
> 
+				"/dev/shm": "/dev/shm"}
> else: - 
> self.mounts=["/proc","/dev","/usr/portage/distfiles","/var/tmp/portage"]
>
> 
+			self.mounts=["/proc", "/dev", "/usr/portage/distfiles",
> +				"/var/tmp/portage"] 
> self.mountmap={"/proc":"/proc","/dev":"/dev","/dev/pts":"/dev/pts",\
>
> 
- -			
> "/usr/portage/distfiles":self.settings["distdir"],"/var/tmp/portage":"tmpfs"}
>
> 
+			
> "/usr/portage/distfiles":self.settings["distdir"],"/var/tmp/portage":"tmpfs",
>
> 
+				"/dev/shm": "/dev/shm"}
> if os.uname()[0] == "Linux": self.mounts.append("/dev/pts") +
> self.mounts.append("/dev/shm")
> 
> self.set_mounts()
> 
> 
> I'm not a fan of this because /dev/shm is writable, and we are
> sharing /dev/shm with not only the host, but all the other catalyst
> runs (in my case that is up to 3) which means it is entirely
> possible for writes to collide, or worse, cleanup to collide.
> 
> Simply chaning the second "/dev/shm" to "tmpfs" is also not right 
> because it ends up with the wrong permissions:
> 
> shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime) tmpfs
> on /catalyst/tmp/hardened/stage1-amd64-2013.0/dev/shm type tmpfs 
> (rw,relatime,size=20971520k)
> 
> 
> I'd like to have the patch rewritten to mount this properly as it's
> own tmpfs with the proper mount options.
> 
> Does anyone have issues with this?  It is a rather trivial thing to
> copy from my work making /var/tmp/portage a tmpfs, anyone can do
> the work.  I can do it, or whomever.
> 
> Please discuss quickly, I fear this bug will stop all forward
> progress and we really can't afford for the builds to stop, again.
> I know I can't.
> 
> Thanks, Zero
> 

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