| Saturday, August 29th, 2015, 00:35 UTC | ||
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| [11:45:25] | enyc: | superm1, tgm4883, dekarl: I have a fixup for the mysql-config-bind-addcess-ipv6-compatibility *update package* case — i.e. when changing bind-address=0.0.0.0 to bind-address=:: ... we commited this to master, but generates "config file modified by user" warnings for those ''updating'' IF they turned-on public_bind "other computers run mythtv"... |
| [11:46:30] | enyc: | superm1, tgm4883, dekarl: the neatest fixup for this I can find involves mythtv-database.postinst, mythtv-database.preinst and creating a temporary file in /etc/mysql/conf.d/ ... found no way around this, but it works neatly in all cases, no warnings |
| [11:47:06] | enyc: | superm1, tgm4883, dekarl: I'm wondering if I should try to pull-request this for master (or we just don't care about "testing" master users and warnings...) in the first-instance... |
| [12:01:34] | enyc: | https://github.com/SimonIremonger/packaging/c . . . e66116a5e6ab |
| [12:01:43] | enyc: | I couldn't find a neater way todo it, comments wanted please =) |
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| [12:47:18] | superm1: | enyc: overall it looks like the right approach, but it is possible that someone changed the conf file in another way other than the public bind option. Since it's in /etc they have right to do that |
| [12:47:43] | superm1: | I think it would be best to compare md5 instead of file existence and checking for the diff |
| [12:48:03] | superm1: | The md5 of a file changed to have public bind turned on should be consistent |
| [12:48:27] | enyc: | superm1: if they changed conf file manually.. thats advanced user imho will find merge update is acceptable |
| [12:49:24] | superm1: | Yeah they would – but you still need to prompt that user |
| [12:49:25] | enyc: | superm1: I don't understand why the md5 check is any different... i thitnk as-is this (better) handles the case where public_bind is on AND they changed something eles in the same file |
| [12:49:39] | enyc: | superm1: which it will do as-is |
| [12:49:49] | ** superm1 looks again ** | |
| [12:49:53] | enyc: | superm1: debian sees the 'other change' as-well and asks them... |
| [12:50:13] | enyc: | superm1: the preinst runs first, THEN debian does the config-file-update-check etc. , THEN postinst runs |
| [12:50:26] | enyc: | superm1: should have made that more clear in the comments |
| [12:50:52] | superm1: | Ohhh |
| [12:50:58] | enyc: | superm1: the prompt-user-etc happens in debian-packaging-checking etc etc... |
| [12:51:00] | superm1: | Yeah you restore it to the old one |
| [12:51:05] | superm1: | I see |
| [12:51:11] | enyc: | superm1: i've tried all 3 cases and this works |
| [12:51:15] | superm1: | Then yeah this looks good |
| [12:51:57] | enyc: | superm1: though I've only been trying on wheezy-i386 for various reasons... trusty or similar would be worth checking too before (ohpefully) getting into fixes/0.27 along with matching config-file-update fix |
| [12:52:23] | enyc: | then I'd be good for setting up my own mythtv system on this mostly-ipv6 network =) |
| [12:52:24] | superm1: | Well so what happens if you don't have an ipv6 dhcp server on network? |
| [12:52:36] | enyc: | all carries on as usual |
| [12:52:58] | enyc: | its' only ever a problem if you explicitly build the kernel with IPv6 support disabled, then the world comes to an end, but then lots of packages are like that =) |
| [12:53:12] | superm1: | Ah okay |
| [12:53:13] | enyc: | mythbackend is ipv6-binding-compatible already etc |
| [12:53:20] | enyc: | ::1 (ipv6-loopback) always works etc |
| [12:53:35] | enyc: | more to the point, ethernet interfaces always get a fe80:: ipv6 link-local address |
| [12:53:50] | enyc: | you require a *router advertisement* to get ipv6-autoconfig ipv6 global address |
| [12:54:03] | enyc: | NB: DHCPv6 is OPTIONAL, and DIFFERENT, NOT equivalent to DHCPv4 |
| [12:54:37] | superm1: | That's what I thought. But so on a network that doesn't have a router advertisement broadcast can you still connect from other ipv4 machines? |
| [12:54:41] | enyc: | DHCPv6 can be stateless providing-extra-information OR stateful "static address allocation" much more similar to DHCPv4, except that it requires the RADVD (router advertisement) as well |
| [12:54:46] | enyc: | yes exactly |
| [12:55:22] | enyc: | UNLESS you manually fiddle with the sysctl and disable ipv4-compatibility of ipv6-sockets (bindv6only i think its' called) |
| [12:55:36] | enyc: | binding to :: is what the mysql-5.5 manual tell you to do =) |
| [12:55:57] | superm1: | Ah kk |
| [12:56:31] | superm1: | Got my concerns covered then |
| [12:56:51] | enyc: | mythbackend daemon itself... takes a different approach of 'listing' every ipv6 and ipv4 address, and listening on every one individually, it would seem |
| [12:56:57] | enyc: | (see sudo netstat -lutnp ) |
| [12:57:35] | lautriv: | (superseded by ss these days) |
| [12:57:43] | enyc: | there is some fiddly mess with mythtv-database updating something in the mysql hat etlls mythbackend to turn on/off public_bind |
| [12:58:12] | enyc: | as far as I can tell, my fix, keeps that working the same |
| [12:59:02] | enyc: | superm1: mysql 5.1 doesn't support the ipv6-socket but then thats' pre-wheezy pre-precise (i.e. not supported) only |
| [12:59:49] | enyc: | lautriv: oooooooooooh ss tool interesting didn't know about that |
| [13:00:08] | enyc: | lautriv: grrr... I wish it would show you WHICH ipv6-sockets are bindv6only and not ... |
| [13:00:09] | lautriv: | enyc, similar thing but iprout2 |
| [13:00:29] | enyc: | lautriv: processes creating sockets can expliticly turn on bindv6only |
| [13:00:41] | superm1: | enyc: yeah don't care about stuff that old, agree |
| [13:01:09] | enyc: | lautriv: e.g. mysql-server-5.5 doesn't do that... as their own instructions tell you to use :: if you want "all ipv4 and ipv6 addresses are ok" |
| [13:01:51] | enyc: | superm1: can you see any other potential snags with my update-case-fix, if not i'll pullreq to master |
| [13:02:21] | lautriv: | enyc, i remember mysql did a bunch of ugly things in the past, honestly did not check my newer installs which doing mariadb anyway. |
| [13:02:29] | enyc: | superm1: after more testing (with fix patched manually into 0.27 as well), i may request both it and the config fix goes into fixes/0.27 later =) |
| [13:05:50] | lautriv: | enyc, i find my output verbose enought, try ss -tulpex |
| [13:06:06] | superm1: | enyc: I think it looks pretty solid |
| [13:06:33] | superm1: | Pull request to master and we can back port it to fixes later |
| [13:07:02] | enyc: | nods |
| [13:07:19] | enyc: | superm1: would it be good if next mythtv 0.28 master build in PPA goes through, "testing" people try the update, etc etc first? |
| [13:15:20] | superm1: | Yeah |
| [13:16:11] | superm1: | Unfortunately we don't have a good feedback loop, so just wait a week or two and hope someone complains if something goes wrong |
| [13:16:33] | enyc: | how regular are 0.28 'master' updates to core mythtv?? |
| [13:16:42] | enyc: | 0.27 doesn't seem to have changed since -08–03 ? |
| [13:21:19] | Hydr0p0nX: | 0.27 has been very stable for me |
| [13:21:38] | enyc: | superm1: #64 pull request generated |
| [13:21:38] | ** MythLogBot http://code.mythtv.org/trac/ticket/64 ** | |
| [13:22:15] | Hydr0p0nX: | only complaint being a mild audio stutter when i first start watching livetv for a few minutes and I'm fairly sure that's because I went for cheapish drives |
| [13:22:17] | enyc: | Hydr0p0nX: nods, it just fails when using ipv6-addressing over the network due to silly-little-config-error in mysql service ;p about to xe sorted =) |
| [13:22:35] | superm1: | enyc: kk. 0.27 only builds if there are changes to the code branch |
| [13:22:37] | Hydr0p0nX: | yea, I'm not running ipv6 internally yet |
| [13:22:53] | enyc: | superm1: master builds even on just packaging changes ?? |
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| [13:28:08] | superm1: | enyc: master is same way. It just happens to build more frequently because it changes more frequently |
| [13:28:43] | enyc: | superm1: is there some way i can get LP/PPA-system to email me of new versions / cahngelog ? |
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| [13:33:16] | enyc: | ooooooh there is a mythtv-commits mailing list ;p |
| [13:35:53] | enyc: | not quite what i wanted hrrm |
| [13:41:55] | enyc: | mythtv-firehose will do for now |
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| [15:28:54] | lautriv: | i have a question which is not entirely clear to me .... afair mythbackends can do balanced recording e.g. if a backend runs out of free space, it will save on another space known to the DB like a slave-backend, no ? |
| [15:37:32] | clever: | only if the backend doing the capture has write access to that disk, usualy via an NFS mount |
| [15:43:14] | lautriv: | that's odd. i observed NFS producing more problems than Myth if it runs for some time :( this was however just the start of the real question, which would be about user-jobs where i assume some transcode/lossless_cut/move whatever does also not run internally e.g. all jobs on one slave ? |
| [16:06:40] | clever: | most of my nfs problems have been from the server being turned off while the share was mounted |
| [16:07:01] | clever: | needs certain modes like soft,udp to allow it to fail in a good way |
| [16:07:52] | clever: | dont remember the details on how transcode expects the storage to be handled |
| [16:08:09] | lautriv: | nfs4 is above the old odds but it does deep stacking and leads to other issues ( e.g. NFS on recent XFS may freeze the machine ) |
| [17:16:20] | dekarl: | usually we don't recommend NFS anymore. internal remote file access works well |
| [17:17:00] | dekarl: | personally I load balance for free disk manually by simply moving around recording files. the backend will figure out on its own where they moved after all :) |
| [17:34:06] | enyc: | OoooOoo my packaging changes are being taken goodgood =) |
| [17:58:37] | clever: | dekarl: ah, i havent used the more recent versions, digital service is a double edged sword |
| [17:58:50] | clever: | better quality, better drm |
| [17:59:41] | clever: | the tv streams in over the router, so in theory, mythbackend can directly record with zero extra hardware |
| [18:00:02] | clever: | so sticking a STB and a h264 encoder into the loop just feels wrong |
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| [18:28:12] | lautriv: | dekarl, that was what i was after but can a slave do e.g. lossless_cut on a file recorded by master and maybe save the result on a video-dir on slave2 ? |
| [18:33:03] | dekarl: | lautriv: that is a good question, I have not looked at the script in that detail. mythtranscode should work on remote files |
| [18:50:59] | lautriv: | dekarl, i will test it out. now one last thing ... regardless of the final kind of access (internal/nfs/whatever) it will produce traffic which may be preferably done at times where no frontend(s) want data, i found never a timing option for the scheduler to tell e.g. transform after 4AM or something. |
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| [19:35:09] | dekarl: | lautriv: backends will save locally. You can set a time window to run jobs in mythtv-setup. |
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| [20:13:49] | danlin: | hi, I discussed about a problem I had with btrfs and mythbuntu 140403 in btrfs, is it ok if I copy paste the discussion here ? it's nott too long. |
| [20:16:29] | enyc: | sounds interresting =) |
| [20:16:38] | enyc: | danlin: if needbe point us at pastebin/whatever |
| [20:18:25] | danlin: | Ok, I share it, as to me it's important cause it's a simple way to add an external pendrive/hardrive to the mythtv system using btrfs. First time I use pastebin. http://pastebin.com/2krkuTp5 , does it work? |
| [20:19:37] | danlin: | I was experimenting a simple way to separate /var/lib/mythtv data, and a simple way to add space to that directory using USB. |
| [20:20:00] | enyc: | danlin: ooooo interesting I'm not familiar with using btrfs multi device |
| [20:20:12] | enyc: | can indeed see the pastebin |
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| [20:25:14] | danlin: | Well,with btrfs, with just a command, a line in /etc/fstab, you can add space to /var/lib/mythtv directory. It basically works, but if you move your USB hard-drive in another USB-socket they change name "dev/sdX" and it doesn't work anymore. |
| [20:29:11] | danlin: | It should work also without modify /etc/fstab, but it's like something is missing in UDEV, XFCE, INITRAMFS,MYTHTV,or MYTHBUNTU, I really don't know. just a little help,I'm just an user. |
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| [20:42:42] | ** enyc was going to tell danlin about UUIDs ;p ** | |
| [21:10:46] | dekarl: | actually telling him about storage groups sounds like it fits his problem better... https://www.mythtv.org/wiki/Setup_Storage_Dir . . . File_Systems |
| [21:11:38] | dekarl: | "it's a simple way to add an external hardrive to the mythtv system"... just mount it, create a directory below the mount point and add that to your storage group |
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| [21:28:36] | enyc: | dekarl: hehehe... I'm not yet a well experienced user etc... |
| [21:29:22] | enyc: | dekarl: Acutally, I wonder about a different situation — I want to run low power ARM system etc. for backend, e.g. hummingboard-i2ex or something... recording from DVB, not needing transcoding |
| [21:30:26] | enyc: | dekarl: I would prefer the system-image (sd-card most likely)) to be able to be backed-up/restorted separately from the *data* including database as well as mythtv storage group. |
| [21:31:10] | enyc: | dekarl: even, being able to replace the sd-card with different debian/ubuntu variant while keeping the mythtv data on big hard disk |
| [21:31:21] | enyc: | ideally would like the hard-disk to be able to spin-down overnight etc. |
| [21:31:31] | enyc: | (unless recording or other jobs of course =) ). |
| [21:47:14] | enyc: | whats' the ''right way'' to handle that? symlink /var/lib/mysql/mythconverg to the hdd too? |
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