#jogamp @ irc.freenode.net - 20130530 05:05:35 (UTC)
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20130530 05:52:38 * jk4 (~jk4@anon) has joined #jogamp
20130530 05:55:32 <sgothel> Hi all, hi jk4 .. here is the ZFS/GNU/Linux server setup progress: http://jogamp.org/files/temp/zfs-linux-server-setup.txt
20130530 05:55:58 <sgothel> @jk4: (forgot your name, sorry) Mark said, you might have experience w/ it (ZFS/Linux) ?
20130530 05:56:07 <jk4> i compiled it a couple times!
20130530 05:56:26 <sgothel> so decided to use ZFS mirror since we have 2 3TB disks, mirror faster than raidz1
20130530 05:56:36 <sgothel> so we have healing for low CPU costs
20130530 05:57:06 <sgothel> the doc above .. currently at the point where we manually populate/install debian on the ZFS rootfs
20130530 05:57:22 <sgothel> now .. guess I need to see how to pur GRUB on MBR ..
20130530 05:57:28 <sgothel> will that be possible ?
20130530 05:57:35 <sgothel> using whole disk for ZFS
20130530 05:57:56 <sgothel> or do we need to put GRUB on the USB stick only ?
20130530 05:58:17 <sgothel> GRUB can do ZFS nowadays ? at least w/ zfs-initramfs ?
20130530 06:00:34 * xranby_ac100 (~xranby@anon) Quit (Ping timeout: 240 seconds)
20130530 06:05:05 <jk4> yeah it can
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20130530 07:49:59 <sgothel> looks like we need grub 2.0.0 - Debian Wheezy only provides 1.99-... according to http://www.funtoo.org/wiki/ZFS_Install_Guide, it will not work
20130530 07:51:01 <jk4> grub 2 is available in the less than stable repos
20130530 07:51:19 <sgothel> jessie already ? will check .. hmm
20130530 07:52:15 <sgothel> it's not like just 'grub 2', but grub 2.00 hmm
20130530 07:53:12 <sgothel> jessie: nope
20130530 07:53:21 <sgothel> sid ..
20130530 07:53:40 <jk4> i'm sure it's fine™
20130530 07:53:56 <sgothel> sid has 2.00+
20130530 07:54:18 <sgothel> how to config apt source .. to chery pick only grub from sid ?
20130530 07:54:40 <sgothel> since we don't want the rest when updating :)
20130530 07:54:47 <jk4> it's called "pinning"
20130530 07:54:57 <jk4> it's obnoxious
20130530 07:55:13 <sgothel> sid also has zfs .. in already
20130530 07:55:14 <jk4> assign preference levels to repos
20130530 07:55:27 <jk4> sgothel: can't be zfsonlinux
20130530 07:55:36 <sgothel> thx .. will search for those ..
20130530 07:55:38 <sgothel> hu ?
20130530 07:55:41 <jk4> license is incompatible with debian
20130530 07:55:51 <jk4> debian linux at least.
20130530 07:56:02 <jk4> debian kfreebsd has zfs :)
20130530 07:56:11 <sgothel> http://packages.debian.org/sid/allpackages
20130530 07:56:25 <sgothel> at least some zfs interface libs .. hmm
20130530 07:56:58 <sgothel> right .. must be fuse related
20130530 07:57:04 <jk4> hmm
20130530 07:57:12 <jk4> those version numbers don't look like anything i'm familiar with
20130530 07:58:22 <jk4> zfsonlinux is painless to build, i'll say
20130530 07:59:12 <sgothel> yup .. and the deb packages are seamless, i.e. w/ dkms and all of that, nice stuff
20130530 07:59:22 <jk4> irssi is being really..weird
20130530 07:59:45 <sgothel> good investement of the DoD, the exception to the rule :)
20130530 08:04:07 <sgothel> instead of 'Package: *', can I say 'Package: *grub*' ?
20130530 08:04:14 <sgothel> i.e. to avoid mistakes ?
20130530 08:09:22 <jk4> presumably
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20130530 08:32:52 <sgothel> http://wiki.debian.org/AptPreferences#Pinning <- that [itself] works, thx
20130530 08:33:11 <sgothel> however, grub 2.00 of unstable has even deps to libc .. so a 'no go'
20130530 08:33:36 <sgothel> from sources I guess .. hmm
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20130530 17:19:00 <sgothel> Re Server: http://wiki.hetzner.de/index.php/Auftragsbearbeitung/en#EX_6S
20130530 17:20:07 <sgothel> They are on holidays, bad timing - so maybe tomorrow or next week we can move. Booting must be done via GRUB on USB, w/ initram on USB due to mentioned lack of GRUB/ZFS support .. until we have a solution.
20130530 17:20:45 <sgothel> http://jogamp.org/files/temp/zfs-linux-server-setup.txt (updated .. WIP)
20130530 17:21:57 * [Mike] (~Mike]@anon) has joined #jogamp
20130530 17:25:45 <rmk0> lo
20130530 17:26:15 <rmk0> sgothel: compression because it costs next to nothing in cpu time, but reduces traffic to/from disk
20130530 17:26:19 <rmk0> improves performance a lot
20130530 17:26:40 <rmk0> and also... means you get more space to work with
20130530 17:26:47 <sgothel> was unsure about it .. i.e. especially when trying to compress already compressed stuff
20130530 17:26:49 <rmk0> assuming your data compresses well, obviously
20130530 17:26:54 <sgothel> i.e. xz 7z ..
20130530 17:27:06 <sgothel> then .. it's expensive IMHO
20130530 17:27:17 <rmk0> it's not expensive
20130530 17:27:24 <rmk0> it just won't reduce the size of those files
20130530 17:27:29 <rmk0> and it's per-block, anyway
20130530 17:27:34 <sgothel> compressing a 7z/xz/mp4 is stull .. cheap ?
20130530 17:27:45 <sgothel> ok .. then I change it to .. ?
20130530 17:27:48 <rmk0> it's not more or less expensive than compressing any other data
20130530 17:27:51 <sgothel> default was none
20130530 17:28:00 <rmk0> i've been using gzip
20130530 17:28:06 <rmk0> seems like there are other options now
20130530 17:28:17 <sgothel> great thx, will adapt
20130530 17:28:45 <sgothel> experience w/ atime ? (not needed for server, but maybe at home)
20130530 17:29:00 <sgothel> should be cheap .. no ? traditionally it's expensive w/ NFS
20130530 17:29:01 <rmk0> think it was disabled by default and i left it that way
20130530 17:29:10 <rmk0> so... don't know
20130530 17:29:19 <sgothel> looks like diff. defaults .. o lala
20130530 17:30:33 <rmk0> hehe
20130530 17:30:48 <rmk0> yeah, the defaults i'm using were default as of... 2010, i think
20130530 17:38:15 <sgothel> https://jogamp.org/bugzilla/show_bug.cgi?id=742
20130530 17:39:03 * rmk0 awaits anxiously
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20130530 20:47:08 <xranby1> I am now registered for siggraph 2013
20130530 20:48:09 <xranby1> (last day for early registration is now on friday)
20130530 20:53:22 <xranby1> http://s2013.siggraph.org/ - https://jogamp.org/bugzilla/show_bug.cgi?id=661 - SIGGRAPH 2013 - JogAmp BOF [2013 07 21–25, Anaheim, CA, USA]
20130530 20:55:12 <xranby1> https://jogamp.org/wiki/index.php/JogAmp_BOF_SIGGRAPH_2013_PLANNING
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20130530 22:27:05 <jk4> sgothel: did you see http://zfsonlinux.org/debian.html
20130530 23:19:03 <sgothel> yes jk4
20130530 23:19:13 <sgothel> using it .. so .. ?
20130530 23:19:26 <jk4> i just installed it too
20130530 23:19:31 <jk4> easy peasy
20130530 23:19:33 <sgothel> but nor zfs grub
20130530 23:19:36 <sgothel> *no
20130530 23:20:24 <sgothel> well, I guess mbr + /boot on USB is ok
20130530 23:23:05 <jk4> look at it as a security feature
20130531 01:17:34 <sgothel> https://blogs.oracle.com/dap/entry/zfs_compression <- not so great CPU perf. numbers, i.e. compression is always a hit - plus increases latency (see NFS test)
20130531 01:20:16 <sgothel> i.e. in this test read performance unaffected, but has write performance hit
20130531 01:21:11 <sgothel> in our case, 200G used of 3000+ GB .. I guess I stay conservative and keep it off
20130531 01:21:45 <sgothel> especially since we are not just a file-server
20130531 05:05:49 -CatOut- Continue @ http://jogamp.org/log/irc/jogamp_20130531050549.html