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| mnathani_ | how do I force an ubuntu install to use BIOS mode rather than EFI / GPT | [12:23] | |
| brycec | Disable EFI in the bios? Force the boot selector to boot from the ISO as BIOS (and not from an EFI file)? At least, those are the two methods I've done in the past, generally speaking. | [12:29] | |
| mercutio | you boot in usb mode
when you select boot device it should show two hmm he.net route changed suddenly. oh and now there's he.net loss what's he.net doing :/ and now it's fine again. | [12:29] | |
| mnathani_ | dont think the machine supports efi, however the ubuntu install configured the disk to use gpt | [12:31] | |
| mercutio | gpt is fine
you can use gpt with bios you just want a boot partition with the sectors of 34 through 2047 | [12:31] | |
| mnathani_ | cant boot however
after install something about hd0 | [12:31] | |
| mercutio | i suppose you can't pastebin the partition layout easily | [12:32] | |
| mnathani_ | if I liveboot it probably
its a 3tb drive if that makes a difference | [12:32] | |
| mercutio | 3tb NEEDS gpt
so you have gpt/bios or gpt/uefi the bios boot partition isn't as bad as it sounds | [12:33] | |
| brycec | mercutio++ | [12:33] | |
| mercutio | uefi is sometimes a little messy
GUID Partition Table (GPT) specific instructions On a BIOS/GPT configuration a BIOS boot partition is required. GRUB embeds its core.img into this partition. Note: that's from https://wiki.archlinux.org/index.php/GRUB bah like my hp server doesn't support uefi, and is using gpt with 3tb drives https://en.wikipedia.org/wiki/BIOS_boot_partition | [12:33] | |
| BryceBot | BIOS boot partition :: The BIOS boot partition is a partition on a data storage device that GNU GRUB uses on legacy BIOS-based personal computers in order to boot an operating system, when the actual boot device contains a GUID Partition Table (GPT). Such a layout is sometimes referred to as BIOS/GPT boot. A BIOS boot partition is needed because GPT uses the disk sectors immediately following the Master Boot Record (MBR) to hold the actual... | [12:35] | |
| brycec | Also note that the only way to fully/properly install UEFI requires that you be booted by UEFI in the first place, otherwise the install has no access to the EFI nvram to install a boot entry. | [12:36] | |
| mercutio | maybe that simplifies saying about it | [12:36] | |
| brycec | (And so if you're not booted UEFI, then it couldn't possibly have installed UEFI) | [12:36] | |
| mercutio | so you bsaically create a partition of type EF02 | [12:36] | |
| mnathani_ | what command do I run to display the partition layout? | [12:37] | |
| mercutio | gdisk
well that's what i use | [12:37] | |
| brycec | [on linux] | [12:37] | |
| mercutio | ahh yeah, on linux :)
but he said ubuntu | [12:37] | |
| brycec | Yeah.
t'was mostly a joke, since the question was vague | [12:37] | |
| mercutio | i'm trying to see where people say about the 34 to 2047 trick
not to much avail suppose it doesn't matter where it says it. all recent systems won't use the sectors between 34 and 2047 normally so you can just add that partition because they want to do the sector alignment stuff. but for grub sector alignment doesn't matter :) Number Start (sector) End (sector) Size Code Name 1 34 2047 1007.0 KiB EF02 BIOS boot partition so you can do like that withotu having to screw around with repartitioning then you can just do grub-install /dev/sda or whatever your device name is | [12:38] | |
| *** | mnathani_ has quit IRC (Ping timeout: 240 seconds) | [12:43] | |
| mercutio | has anyone else hit some weird refresh bug with chrome?
where pages that reload regularly seem to reload ALL THE TIME like say smokeping that usually reloads once a minute or something, will reload once a second or somethign | [12:47] | |
| JC_Denton | do you guys know anything about 4k monitors? | [12:49] | |
| mercutio | JC: I'm using a cheap one.
and have been for a while. it works ok in linux, but windows 4k support on small monitors is pretty broken | [12:49] | |
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| mnathani_ | I dont see any partitions
live boot ubuntu | [12:58] | |
| mercutio | with gdisk?
were you looking at the usb stick? or the hard-drive | [12:58] | |
| mnathani_ | I ran gdisk as root
it says type device filename or press enter to quit It was a live dvd boot | [12:59] | |
| mercutio | gdisk /dev/sda
sorry :) | [12:59] | |
| mnathani_ | found valid gpt with protective MBR, using gpt | [13:00] | |
| mercutio | oh you can do both at once | [13:00] | |
| mnathani_ | how do I get it to actually boot from this drive though? | [13:01] | |
| mercutio | maek the ef02 boot partition
if it's not there it doesn't need to be big so if it'snot there, you can make it in the empty space between 34 and 2047 sectors | [13:01] | |
| mnathani_ | are there a bunch of steps | [13:02] | |
| mercutio | not really
gdisk is like fdisk if you've used fdisk | [13:02] | |
| BryceBot | That's what she said!! | [13:02] | |
| mnathani_ | not realy used fdisk without the hand holding
of a manual | [13:02] | |
| mercutio | hmm | [13:02] | |
| mnathani_ | what should I search for to find instructions online? | [13:03] | |
| mercutio | i have something to paste
ok that's the gdisk step although you'll probably want to s/vda/sda/ | [13:04] | |
| mnathani_ | I have an ef02 | [13:05] | |
| mercutio | oh you do | [13:05] | |
| mnathani_ | start 2048 end 4095 | [13:05] | |
| mercutio | ok
cool then grub-install /dev/sda should just make it work what happened when you tried to boot it surely ubuntu doesn't get that bit wrong | [13:05] | |
| mnathani_ | grub install error | [13:07] | |
| mercutio | you probably have to chroot into it
with /proc /sys /dev inside i wonder if ubuntu installer makes that easy | [13:07] | |
| mnathani_ | probably help to know the error I get on boot? | [13:08] | |
| mercutio | yeah | [13:08] | |
| brycec | I remember Debian's rescue mode would chroot and all for you | [13:08] | |
| mercutio | what do you get on bootup
cool brycec | [13:08] | |
| brycec | (in other words, maybe Ubuntu "adopted" a similar rescue mode on their livecd) | [13:09] | |
| mercutio | stressing maybe? :)
you can do mount command to check | [13:09] | |
| mnathani_ | error: attempt to read or write outside of disk 'hd0'
entering rescue mode grub rescue> | [13:10] | |
| mercutio | that does sound strange
where is /boot | [13:10] | |
| mnathani_ | on the 3tb drive | [13:10] | |
| mercutio | where abouts on the 3tb drive though | [13:10] | |
| mnathani_ | not sure
I left it as defaults can I force mbr/bios and let the drive show up as 2.something tb | [13:11] | |
| brycec | Perhaps it's easiest to just try a clean reinstall and stop when the installer gets to partitioning and examine the defaults for Science. | [13:11] | |
| mercutio | other people have hit that issue mnathani_
apparently why not just create 250gb or something for / and put zfs on the rest https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1284196 looks like grub could have 2tb limit | [13:12] | |
| mnathani_ | any idea what I can do differently when I reinstall? | [13:15] | |
| mercutio | yes
don't use defaults you can probably use uefi too if it's recent but you shouldn't need to but generally speaking with a 3tb drive you probably don't want one huge / anyway my / is 64gb with separate /home etc ie / fits my whole system minus data but that's with arch, and i don't install stuff i don't use | [13:15] | |
| brycec | I usually stick with / at 10GB, and separate home. | [13:18] | |
| mercutio | brycec: do you have separate /var ?
my /var is 10gb alone :) | [13:19] | |
| brycec | yeah, 10GB is more than fine for a Debian server (for instance)
mercutio: Nope, not on this VPS | [13:19] | |
| mercutio | as part of / though
oh talking about vps i dbout mnathani_ has a 3tb vps :) | [13:19] | |
| brycec | On my desktop /var is part of / (but my / is 63GB, 15GB used) | [13:19] | |
| mercutio | yeah on vps's it's not so bad normally
brycec: ahh you have the same size as me :) | [13:20] | |
| brycec | (My desktop's /var is 7GB)
(used) | [13:20] | |
| mercutio | /dev/md1 63G 35G 26G 59% / | [13:20] | |
| brycec | zroot 63G 15G 48G 25% /
:P | [13:20] | |
| mercutio | heh | [13:21] | |
| mnathani_ | s/dbout/doubt | [13:21] | |
| BryceBot | <mercutio> i doubt mnathani_ has a 3tb vps :) | [13:21] | |
| brycec | (And because it's Linux root on ZFS, I cannot put /var or /usr on separate slices, alas) | [13:21] | |
| mercutio | brycec: can you set lz4 compression on that? | [13:21] | |
| brycec | Yes | [13:21] | |
| mercutio | i'm being conservative not having / on zfs | [13:21] | |
| brycec | zroot compressratio 1.53x - | [13:21] | |
| mercutio | nice | [13:22] | |
| brycec | Gets better too :P zroot refcompressratio 1.72x - | [13:22] | |
| mercutio | mdadm is faster than zfs anyway :) | [13:22] | |
| brycec | I have no use for mdadm with a single drive :P (plus it's super speedy as is) | [13:22] | |
| mercutio | is there still issues with mysql on zfs?
heh yeah it's not like i need the speed | [13:23] | |
| brycec | I've never had any issues (running MySQL on FreeBSD/ZFS) | [13:23] | |
| mercutio | there's some lack of directio or something issues | [13:23] | |
| brycec | Been running it for over a year, no issues.
don't remember what options I have set | [13:24] | |
| mercutio | ahh
yaeh i think you can disable directio/asyncio | [13:24] | |
| brycec | because there are options you're supposed to set | [13:24] | |
| mercutio | i thin problem was it was supporting one but not the other
now my network can do 26 gigabit i wonder how i'm meant to get my disk speeds up that fast | [13:24] | |
| mnathani_ | I am at the screen for configuring the partitions | [13:25] | |
| mercutio | mnathani_: do you want to use zfs? | [13:25] | |
| brycec | http://sprunge.us/RBDL if you care, mercutio | [13:25] | |
| mnathani_ | I do not
this is not one of my systems | [13:25] | |
| mercutio | ok
do you want to have separte /home etc ? | [13:25] | |
| mnathani_ | end users are not technologically advanced
sure separate home would be good | [13:26] | |
| mercutio | are they going to store all of their user data on /home? | [13:26] | |
| mnathani_ | yes | [13:26] | |
| mercutio | then you can probably just go with uhh
128gb / and the rest /home ? well you may want swap too | [13:27] | |
| mnathani_ | I need separate boot though? | [13:27] | |
| mercutio | but compressed ram file system seems fine usually now :/
not if you have seperate / and /home and / isn't insanely big i've seen more problems from separate /boot than help from it i only really do seperate /boot on complex systems, raid etc. | [13:27] | |
| mnathani_ | are these primary or logical partitions? | [13:28] | |
| mercutio | or uefi
with gpt everything is primay so say partition 1 tiny EF02 partition two / of 128gb partition 3 swap of 8gb partiton 4 /home of the rest | [13:28] | |
| mnathani_ | how small is tiny? | [13:30] | |
| mercutio | well mine is 1007kb
and sectors 34 through 2047 | [13:30] | |
| mnathani_ | is ef02 the same as reserved bios boot | [13:31] | |
| mercutio | it's "bios boot partition"
but probably btw the problem with /boot being seperate is usually that people make it tiny, and ubuntu keeps updating kernels and so it overflows the boot partition because each kernel is like 50mb or something and each minor change means new kernel also on hard-disks generally speaking having / on start of disk is faster cos beginning of disk is faster than end but there are things like chrome which like to spew lots of crap to /home too | [13:31] | |
| m0unds | yea, that is a super annoying thing w old ubuntu installs. not sure if they still default o /boot on its own partition or not
just remember dealing with an old lts (6.06 or whatever) at a customer site and it ran out of space for kernel updates | [13:35] | |
| mercutio | yeah it's a VERY frequent issue
/boot was useful on really old systems but anything that can support a 3tb drive is sure to be new enough to not be an issue | [13:37] | |
| mnathani_ | 3rd attempt at installing ubuntu on this desktop today. Hope this one succeeds | [13:41] | |
| mercutio | fun times :) | [13:44] | |
| BryceBot | That's what she said!! | [13:44] | |
| mnathani_ | rebooting now | [13:51] | |
| m0unds | good luck | [13:51] | |
| mnathani_ | w00t
works now thanks mercutio! and brycec! | [13:56] | |
| mercutio | now you can stick windows back on it
congrats. | [13:57] | |
| brycec | congrats
mercutio++ | [13:58] | |
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| twobithacker | Anyone else seeing packet loss? I'm seeing intermittent issues between PCCW and ARP
https://gist.github.com/2bithacker/048c94ee375bc78e091f | [15:53] | |
| BryceBot | Gist: "https://gist.github.com/048c94ee375bc78e091f" | [15:55] | |
| twobithacker | return path is over any2ix to HE | [15:57] | |
| brycec | Are we already getting our daily IPv6 issue? It's not even 5pm.
(ARP time, when the daily IPv6 issues have been cropping up) Oh you're talking about IPv4 I saw you say HE and assumed :p | [16:00] | |
| twobithacker | oddly IPv6 is going to NTT then to HE | [16:02] | |
| brycec | I wouldn't call that odd. | [16:03] | |
| twobithacker | you don't peer with HE for IPv6 on an IX? | [16:04] | |
| brycec | Me personally? I don't do any peering. | [16:04] | |
| fwiw twobithacker I too saw some packet loss from one of my smokeping slaves https://smokeping.cobryce.com/?target=ARP.ARPWebsite.ARPWebsite4
but only one of them... (and one day, someday, my slaves will upload traceroutes) | [16:09] | ||
| mercutio | twobithacker: he.net has been having issues with ipv6
twobithacker: there's peering with he.net, that's the issue | [16:23] | |
| twobithacker | my problem is on v4 though, v6 is working fine | [16:24] | |
| mercutio | incoming he.net ipv6 traffic is having issues
because he.net send all the traffic in via that path, and they seem to be having issues in los angeles. oh ipv4 issue with he.net direct connection? brycec: the he.net issue is actually different from the congestion issue the congestion has eased off a lot | [16:24] | |
| twobithacker | I'm on Charter, outbound path from ARP is via HE | [16:25] | |
| mercutio | the hop having issues suggests it may be arp -> charter being the issue
got a charter ip to trace to? oh, thunder.2bithacker.net ? wtf is up with he.net | [16:26] | |
| m0unds | lax2 again? | [16:30] | |
| mercutio | probably
it's like it randomly drops all packets but the lax tunnel server on ipv6 was completely broken even to www.he.net too | [16:31] | |
| twobithacker | sentinel.2bithacker.net is my public IPv4 if you're trying to test | [16:32] | |
| mercutio | it's not slight degredation, it's on/off issues
two: you're finding it stops working compeltely for periods, and then fine again? | [16:32] | |
| twobithacker | yeah | [16:33] | |
| mercutio | ok route's changed
tell me if it happens again err from now | [16:34] | |
| twobithacker | will do | [16:34] | |
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