| === night is now known as night|pub | ||
| === night|pub is now known as night | ||
| andrewlsd | mornings | 07:32 |
|---|---|---|
| andrewlsd | The last 3 days I've been getting "hash-sum mismatched" on xenial-updates for 3 computers that are configured to use either of the two mirrors: archive.ubuntu.com and ubuntu.mirror.neology.co.za . Curious as to whether anyone else running 16.04.x has also been experiencing those issues. | 07:41 |
| andrewlsd | I've just done: apt clean ; sudo rm -r /var/lib/apt/lists/* -vf ; apt update and am still getting that error for Err:9 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages | 07:42 |
| andrewlsd | Hash Sum mismatch | 07:42 |
| andrewlsd | hmm. and now after repeating the same set of "clean, rm, clean, update" the error has disappeared. Odd. I guess some file or apt-related process must have still been open | 07:52 |
| thatgraemeguy | andrewlsd: FWIW I've been using mirror.wiru.co.za hassle-free for a few weeks instead of the neology mirror | 07:58 |
| thatgraemeguy | also 1G uplink and seems to update more frequently | 07:58 |
| thatgraemeguy | I've seen neology's mirror lag 2-3 days behind a few times recently | 07:59 |
| nsnzero | good morning all have a great day | 08:21 |
| MaNI | So I have a few cloudatcost boex (yes I know they suck etc.) that I ran some non crucial stuff on, they mostly work okay but there is this problem where every now and then the filesystem becomes readonly and then the stuff stops working. | 08:27 |
| MaNI | I figure the easiest fix is to just reboot the machines, what would be the best way to detect that a filesystem has gone read only? | 08:27 |
| MaNI | cron job, or is there some more automatic way to have it reboot in such circumstances? | 08:28 |
| nsnzero | hi mani | 08:38 |
| nsnzero | if the reboot command work in terminal without asking for sudo password then you can set-up a cron job | 08:38 |
| andrewlsd | MaNI: tune2fs -l might show if filesystem is currently read-only. | 08:56 |
| andrewlsd | thanks thatgraemeguy for the mirror.wiru tip. | 09:16 |
| andrewlsd | Anyone here know of any cape town-based individuals or (small) companies that I could refer a small organization to for Linux support. Basically a firewall+proxy setup? | 09:17 |
| andrewlsd | where "know of" means you'd like to suggest them as worth talking to. rather than have just heard of someone. Thanks everyone in advance. | 09:18 |
| thatgraemeguy | MaNI: look at monit, it's designed for that sort of thing | 09:33 |
| MaNI | thanks, I'll see if I can find some text that describes it's capabilities | 09:37 |
| MaNI | am I the only one that misses the days when webpages actually had information, instead of being a scroll fest with one line of marketing per overly graphic designed page | 09:38 |
| thatgraemeguy | andrewlsd: way back when I used to use Clarotech Consulting. I haven't needed them in ages, but I see from their site the management team is still the same, so I reckon they're still just as good as ever | 09:39 |
| andrewlsd | thanks thatgraemeguy, yeah I know some of the Clarotech people. Good recommendation. | 09:40 |
| MaNI | monit does look good for the task, thanks | 09:43 |
| thatgraemeguy | the real fix of course is to see why it does that. you probably have 'errors=remount-ro' in the mount options, so there is an underlying error causing it to remount the filesystem/s read-only | 09:45 |
| thatgraemeguy | 'dmesg' might have clues, otherwise perhaps the host's support people can assist | 09:46 |
| MaNI | yeah, I think it's out of my control | 09:46 |
| MaNI | AFAICT the harddrive performance becomes so poor at times that the system does an emergency remount | 09:46 |
| MaNI | better to let it do that and reboot than to risk filesystem corruption | 09:48 |
| MaNI | or at least in this case, if it were for anything important I'd burn the servers and then get real ones :) | 09:52 |
| thatgraemeguy | fair enough | 09:56 |
| andrewlsd | MaNI: you might want to start remote logging, since if root filesystem goes R/O, on a cloud system, then you probably won't get logs written to disk. | 10:01 |
| andrewlsd | or just get a second disk / partition just for logging to. | 10:01 |
| MaNI | yeah maybe | 10:43 |
| theblazehen | MaNI: Can you do a `mount -o remount,rw /`? | 10:55 |
| theblazehen | Doesn't work on btrfs, not sure if that applies to all filesystems though | 10:55 |
| andrewlsd | MaNI: probably btrfs is a _bad_ idea on unreliable storage. (but you probably realized that by now) | 11:18 |
| andrewlsd | use case for an alpine ^ run in ram, and periodically sync (backup) configs and data to persistent disk. | 11:19 |
| MaNI | yeah, it's ext4 | 11:20 |
| andrewlsd | phew. ask theblazehen about fun with `btrfs`. | 11:20 |
| andrewlsd | where s/fun/data\ loss/ | 11:20 |
| andrewlsd | IIRC | 11:21 |
| MaNI | I got over playing with filesystems years ago, hehe | 11:21 |
| andrewlsd | MaNI: you could set the filesystem error behaviour to panic. That might give you a reboot when there are fs issues. instead of needing to detect RO and reboot. | 11:23 |
| MaNI | hrm, yeah that would be handy if it works | 11:23 |
| MaNI | okay, set now to wait a week or so and see what happens :) | 11:29 |
| andrewlsd | you could test it by creating loopback device with that setting https://serverfault.com/questions/498900/intentionally-cause-an-i-o-error-in-linux/498931 | 11:31 |
| andrewlsd | and manually generate a fs error | 11:31 |
| theblazehen | Yeah :( | 11:31 |
| theblazehen | At least, now I know snapshots != backups | 11:31 |
| MaNI | I had some 'fun' experimenting with murderfs back in the day, and then I ran into a 'rare' jfs kernel bug | 11:34 |
| theblazehen | heh | 11:34 |
| MaNI | after that some on and off issues with xfs, and I decided it's best to just stick with the most used/tested filesystems and not try anything different | 11:35 |
| theblazehen | I'm using btrfs with daily backups to ext4 | 11:35 |
| andrewlsd | whats the SSD fs from samsung called? | 11:37 |
| andrewlsd | F2FS. | 11:37 |
| andrewlsd | Flash Friendly Filesystem | 11:38 |
| andrewlsd | https://en.wikipedia.org/wiki/F2FS | 11:38 |
| MaNI | oh yeah I also had some fun a few years ago experimenting with the various 'SSD cache' systems in the kernel, bcache etc. | 11:38 |
| MaNI | my end conclusion was that none of them should be let anywhere near any data that matters :( | 11:39 |
| MaNI | at least not with the SSD drive I was testing with, maybe people have better luck with other drives | 11:39 |
| * andrewlsd thinks MaNI and theblazehen reached a similar conclusion regarding RAM caches | 11:39 | |
| theblazehen | Yeah, RAM is no. bcache works well though | 11:43 |
| theblazehen | Just don't use bcache on a file in /dev/shm | 11:48 |
| MaNI | I was getting regular corruption in my tests, but this was a few years ago, and it may have been some specific issue with that particular SSD and/or xfs or something | 11:49 |
| MaNI | the SSD itself has worked 100% reliably since then as a normal SSD, so it wasn't faulty or anything, but maybe still just some funny with it and bcache | 11:50 |
| theblazehen | Did you have discard enabled? | 11:52 |
| MaNI | too long ago to answer honestly :/ but I vaguely recall I may have tried both with it on or off | 11:56 |
| MaNI | I do also use zram, so it's possible theres some weird interaction there | 11:58 |
| calhax_za | Hi All, hows everyone doing? | 13:20 |
| K_K_N | anybody here know if Ubuntu will work on a Gigabyte Laptop? | 13:35 |
| MaNL | thats going to depend very much on the model I would imagine | 13:37 |
| K_K_N | but generally would you say just the default install should work or do you suspects it might not be that easy? | 13:38 |
| MaNL | probably, but laptops are fiddly when it comes to graphics drivers, bluetooth drivers, wireless drivers etc. so it's not uncommon for certain laptops to have problems | 13:44 |
| propagandhi | Hey guys! | 14:31 |
| propagandhi | Does anyone use WordPress' CLI tool to perform scheduled backups? | 14:32 |
| propagandhi | something like `wp export` or `wp db export` | 14:32 |
| paddatrapper | propagandhi: I would just backup WordPress directory and export DB | 15:45 |
| === MaNL is now known as MaNI | ||
| calhax_za | Evening :) | 18:54 |
| calhax_za | join #ubuntu-za | 18:55 |
| calhax_za | sorry | 18:55 |
| calhax_za | lol | 18:55 |
| nsnzero | evening calhax_za | 18:56 |
| calhax_za | hows you doing nsnzero? | 18:57 |
| calhax_za | where are kilos and inetpro? sleeping? | 18:57 |
| nsnzero | ok and yourself calhax_za | 18:58 |
| nsnzero | i havent seen either of them in a while | 18:58 |
| calhax_za | im good thanks nsnzero, I havent seen you here before, althou I haven't been around for a while LOL | 18:59 |
| nsnzero | well in that case nice to meet you - i joined fairly recently | 19:01 |
| calhax_za | awesome sauce nsnzero | 19:02 |
| andrewlsd | evening all | 19:52 |
| superfly | ohi | 21:39 |
Generated by irclog2html.py 2.7 by Marius Gedminas - find it at mg.pov.lt!