Notices by Richard "mtfnpy" Harman (xabean@infosec.exchange), page 2

@TechConnectify how often are you smashing the block/mute button?

Or are those people making new accounts, and continuing to harass?

@silverwizard my watch won't let you get away from typos!

@silverwizard or honey into the butter. 🤤

Dear fellow Virginians: tomorrow is the day, go Do The Thing https://vote.elections.virginia.gov/VoterInformation/Lookup/polling #vote

@silverwizard that's ... that's illegal

@jerry ooh, thank you. I'm only 1/3rd in on the 2nd page, and I hear in my head a very distinct voice like a teacher in high school accosting a child for misbehavior: "Sit DOWN Mr. Jordan."

@silverwizard TMTOWDI!

With each social media post of someone popping positive for COVID-19 for Defcon/Blackhat, ... yeah I think any FOMO I had has gone deeply into negative to the point of being glad I didn't go.

Wear masks, people. Save lives.

@Xavier literally just grabbed it on a video call with a friend helping them troubleshoot a thing!

@silverwizard Right now I'm trying to figure out *what* tunable parameter, if any affects the 256MB/s write speed ceiling of the mdraid device itself. That seems oddly artificial, when I can get 750MB/s write speed with RAID0 on the exact same disks.

@silverwizard maybe? But I'm intentionally making this an edge case where *nothing else* is happening except me doing sustained writes.

I would expect that if I'm providing the RAID subsystem MUCH more data to write than a stripe size, it should be able to calculate what the RAID6 dual-parity *should* be and just write without reading.

I think I just discovered a bottleneck in my JBOD RAID6 linux mdraid at home, iostat shows wkB/s == 262144.00 for the md124 device itself.

That's a magic number! It's also stupid fucking low!

If I switch to raid 0 (just striping), my write speed goes *through the roof*.

I'm benchmarking with dd, trying to do sustained writes w/ a block size much larger than the stripe size.

What do I see in iostat? Reads. When I'm writing.

Why the fuck is it reading?

@thomasfuchs I HAD ONE OF THOSE omg

It had the DIP switches under the trap door under the northgate logo to configure it!

(soon-ish, sometime around mid May)

For sale: one very gently used #Remarkable2 gray "polymer weave" book folio, $80 or best offer.

#remarkable #folio #sale

@nova [insert aliens history channel meme jpg here] "virtual machine"

@silverwizard I have a firefox extension that tries (and often fails) to grease this friction.

https://github.com/rugk/mastodon-simplified-federation

@silverwizard I don't remember :(

This was a tiny cluster just for temporary storage of data, either one or three nodes total the 1st time, all (data, worker, etc) nodes, nothing special like Cold or UltraWarm/Warm/etc fancy stuff.

@silverwizard I'm just pissed I have to go through a stupid awful process setting up roles/permissions again.

I'm just really glad I wrote that down in a wiki.

@silverwizard I think this is the 2nd time I accidentially'd blowing up the #OpenSearch, I don't remember what the 1st time was, might have been adding a node or increasing node storage size or something.