IRC logs for #automotive for Wednesday, 2017-07-19

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Tartarusdl9pf: ping12:38
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dl9pfpong13:10
dl9pfTartarus: pong13:10
Tartarusdl9pf: Hey, so, compressed VM images13:11
TartarusHow do we want to handle needing to make changes to a core bbclass? :)13:11
dl9pfthere is no appends for bbclasses ... so we'd have to put it into meta-agl or meta-agl-bsp which has a higher prio13:15
dl9pfhttps://git.automotivelinux.org/AGL/meta-agl/tree/meta-agl/classes13:15
dl9pfwe did that once already to backport a fix for useradd.bbclass13:16
dl9pfsee commit 418cd42c9c18b649f8c839849108f7a309bdc8fa in meta-agl ... so throw a copy in meta-agl/classes13:18
Tartarusdl9pf: OK, copy in and then next commit does changes?  Or just all in one commit?13:20
dl9pfall in one13:20
TartarusOK, will do, thanks13:21
* mranostay spots Tartarus.. and runs in fear13:21
Tartarusdl9pf: How worried are you about the case of both vmdk and vmdk.xz being desired?13:21
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Tartarusah, wait, yay, I found the right bit of bb magic13:22
dl9pftbh if the user (= /me) requests vmdk.xz there should be only vmdk.xz . No stray extra files.13:22
dl9pfif he requests vmdk , then there should be vmdk .13:22
Tartarusdl9pf: Right.  This leads nicely to the next question I had, how much do we want to push on this upstream?13:23
dl9pfI'm not in favour of build products laying around in the deploy/images/<MACHINE>/13:23
TartarusThe VM image handling stuff is different from normal images, even complex normal images like ubi/ubifs13:23
Tartarusdl9pf: (Aside, if 'foo' in d.getVar('BAR', d): will catch foobar in BAR, but bb.utils.contains will get this right, so we're good now)13:24
dl9pfTartarus: as much as possible ... i know e.g. the intel-corei7 image creation is doing ext4 -> hddimg -> iso / live -> wic   and all ends up in the output dir ...13:24
dl9pfso we'll need to see how things interact13:25
Tartarusdl9pf: OK.  I have a feeling RP won't like this, since we cannot reuse the current COMPRESSIONCMD stuff13:25
dl9pfok, let's see13:25
TartarusI'll get an RFC out sometime shortly then and see what RP says, and then move from there13:26
Tartarus(RFC for upstream, that is)13:26
dl9pfyep13:26
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Tartarusdl9pf: Should I pick-up and re-use https://gerrit.automotivelinux.org/gerrit/#/c/9029 for the change-id?13:29
TartarusBeen a bit since I've had to do gerrit stuff13:29
TartarusWe could move that one to abandonded and I'll add vmdk.xz and then qemux86* using that via AGL_EXTRA_IMAGE_TYPES13:29
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dl9pfok13:38
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Tartarusdl9pf: While I'm in here, vmdk.xz + qcow2, vmdk.xz + qcow2.xz, or just vmdk.xz ?13:46
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TartarusI know mdp wrote the JIRA for vmdk + qcow213:46
Tartarusand "everything" supports vmdk13:46
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dl9pfvmdk.xz  by default13:46
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dl9pfwe're doing ext4.xz which is perfectly fine for qemu13:47
dl9pfwe don't need qcow213:47
TartarusDrop qcow2? OK13:47
dl9pfyes13:48
mdpvmdk is fine for qemu too13:58
mdpqcow2 is most efficient, but since we've opted to optimize for disk space..the user can choose to build that on their own.13:59
mdpTartarus: yeah, that title is months old ;)14:00
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mranostaymdp: is there much difference in VM formats?14:13
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* Tartarus kicks gerrit14:32
CTtpollardTartarus gets absorbed into the java14:34
Tartarusdl9pf: I made gerrit a little mad since I couldn't re-use the changeid on https://gerrit.automotivelinux.org/gerrit/#/c/9031/214:34
* dl9pf looks14:36
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Tartarusdl9pf: OK, nvermind, mdp corrected me14:46
Tartarus10273 is abandoned, the other 2 are good to go, generally speaking14:46
Tartaruspreparing to RFC vmdk.xz upstream now and see what happens there14:46
mdpmranostay: yes..it's a bit complicated. from a simple pov one can put a raw or vmdk on anything.14:48
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mdphowever, you start to get into practical concerns with raw disks in that they are a fixed full size..whereas formats like qcow2 can grow as data is added..which is why people tend to prefer a special format14:48
mdpfurther, why would somebody choose to use qcow2 on qemu on linux? well, it's easily mountable with qemu-nbd to go manipulate it...14:49
mdpas far as just traditional block i/o performance, I don't see any appreciable difference though supposedly qcow2 is still faster than vmdk in qemu as the latter came in much later.14:50
mdptbh, AGL UI latency is a generic issue and we don't even have any serious graphics pressure to see any noticeable performance difference even with drm backend disabled.14:51
mdpit's not like any of the apps are doing animated icons or video playback14:52
mdpit's a very static set of layers with minimal widget interaction14:52
mdpmranostay: so that's my 2 cents14:52
mdpperhaps a bit more14:53
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furyI want animated icons and video playback! :D14:56
* fury ducks14:56
furywell, at least streaming video from e.g. a camera that's spitting out h.26414:56
mdp"patches welcome"14:56
furythat'd be cool14:57
mdpfury, you can have it all!14:57
furyrollin in the deeeeeeeep!14:57
mdpfury, as we say a lot at work, "It's just more software, we can do anything."14:57
mdp"...with enough budget."14:57
furyfamous last words? :D14:57
furyyeah lol14:57
furythose magic words14:58
furyshow me the moneeeeey!14:58
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Tartarusdl9pf: OK, I'm going to push another version of that vmdk.xz things, and I can easily enough include deleting hdddirect left-overs16:08
TartarusStill sorting out all the details on how to do this in a better way for upstream16:08
Tartarus"yay" big rework of image creation logic, maybe :)16:08
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TartarusActually, I'll leave the hdddirect bits out for the moment16:14
TartarusGet all that sorted out upstream and then we'll pull stuff back in16:14
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mdpTartarus: thanks, getting caught up on proper qemu docs now16:20
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