MNByChoice

@MNByChoice@midwest.social

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MNByChoice ,

NFS and ZeroTier would likely work.

When at home NFS will be similar to a local drive, though a but slower. Faster than SSHFS. NFS is often used to expand limited local space.

I expect a cache layer on NFS is simple enough, but that is outside my experience.

The issue with syncing, is usually needing to sync everything.

MNByChoice ,

ZeroTier allows for a mobile, LAN-like experience. If the laptop is at a café, the files can be accessed as if at home, within network performance limits.

MNByChoice ,

NFS-Cache is a specific cache for NFS, and does not represent all caching that can be done of files over NFS. "Direct I/O" is also a specific thing, and should not be generalized in the meanings of "direct" and "I/O".

Let's skip those entirely for now as I cannot simply explain either. I doubt either will matter in your use case, but look back if performance lags.

One laptop accessing one NFS share will have good performance on a quite local network.

NFS is an old protocol that is robust and used frequently. NFSv3 is not encrypted. NFSv4 has support for encryption. (ZeroTier can handle the encryption.)

SSHFS is a pseudo file system layered over SSH. SSH handles encryption. SSHFS is maybe 15 years old and is aimed at convenience. SSH is largely aimed at moving streams of text between two points securely. Maybe it is faster now than it was.

MNByChoice ,

If there is sufficient RAM on the laptop, Linux will cache a lot of metadata in other cache layers without NFS-Cache.

MNByChoice ,

Won't work. Eventually, some asshole will fly a fleet ovet and demand you change how you live your life for "reasons".

MNByChoice ,

I would want something simple, extensible, and easily readable. I would write in the clearest way possible in Bash with small, single purpose programs handling anything performance critical.

Could We Build a Decentralised Social Platform Rooted in Place? ( carlnewton.github.io )

Over the past year or so I’ve been playing with the idea of a decentralised social platform based on your location. By putting physical location at the centre of the experience, such a platform could be used to bring communities together and provide a source of local information when travelling. Please let me know what you...

MNByChoice , (edited )

There was a nonfederated one. Elk talk, or Oxes. Anyway, most useful on college campuses. Pointing this out for reseach.

Sounds great!

Edit: It was yikyak!

MNByChoice ,

Here’s where the smoke and mirrors come in. While the stores have no actual cashiers, there are reportedly over 1,000 real people in India scanning the camera feeds to ensure accurate checkouts.

MNByChoice ,

I am failing to find source, but there is also a story about an older predictive model that worked great at one hospital, but failed miserably at the next. There was just enough variation in everything that the model broke.

(I think the New England Journal of Medicine podcast, but I am not finding the episode.)

MNByChoice ,

Why isn’t this just the default?

One may notice that for every new method, the old ways stay around, possibly forever. It is not the default because there were things that worked prior to flatpak. The distros that from before flatpak have likely added the capability, but won't likely change their default for another decade, or more.

I tried, I really did

I've been an IT professional for 20 years now, but I've mainly dealt with Windows. I've worked with Linux servers through out the years, but never had Linux as a daily driver. And I decided it was time to change. I only had 2 requirements. One, I need to be able to use my Nvidia 3080 ti for local LLM and I need to be able to RDP...

MNByChoice ,

You tried. That is far more than many people. Good for you!

I have had similar experiences, but from Linux to other OSes. The mental models for using them are really different, and those don't get enough discussion.

Mayor Jacob Frey quips that choosing remote work over office makes you a 'loser' (Minneapolis, MN, USA) ( bringmethenews.com )

"I don't know if you saw this study the other day, but what this study clearly shows, is when people have the ability to come downtown to an office and don't, when they stay home, sitting on their couch with their nasty cat blanket diddling on their laptop ... if they do that for a few months, you become a loser! It's a study....

MNByChoice ,

That is really great. I love the setup of the wrapper and how the dependences are listed with a "why".

Am I correct in understanding that the freeze mechanism is a "kill -STOP"? (If so, I feel I need to make more use of that command.)

MNByChoice , (edited )

I have had great luck with my users' home directories on ZFS. No issues in years. Used to have issues, and on those days I was glad root was on ext3.

I had issues with btrfs about 10 years ago. It is much better now.

Both experiences with Linux.

A different ZFS partition per user is really helpful for quota and migration.

Sanity check - is rsyncing to a remote computer that has zfs snapshotting an okay way to back things up?

I currently have two computers, one that has a big zfs raidz pool that I currently back everything up to. Right now, on my local computer I use rsnapshot to do snapshot backups via rsync to the remote zfs pool. I know I'm wasting a ton of space because I have snapshotting in the rsync backup, and then the zfs pool is snapshotted...

MNByChoice ,

Have you tried a restore? A non-differential smap snapshot should be fine, but differential snapshots would make a restore difficult to impossible.

A zfssend and zfsrestore with a differential snapshot would be more traditional. If one put mbuffer in the middle, it would even be fast.

MNByChoice ,

I disagree with the premise that Android is Linux "fixed". Sudo is a bridge for privilege compartmentalization. There is root on Android.

And for many of those points there is a solution, but not one many want to use. SELinux is poorly document and has a bad reputation, but does work. File systems can be mounted as to not execute anything on them.

Good topic idea though, I just disagree with the specific examples.

What do you use to track BMCs/KVMs/IPMI?

I manage hundreds of servers at work. They each have a BMC (remote power on/off, reset, KVM, etc) and we need to use those features frequently. I've been using a Google Docs spreadsheet to track their URLs, what each box is used for, specs, etc but it feels like a dynamic web app would be better for this purpose. Does anyone...

MNByChoice ,

There are inventory programs, many of them, that will handle keeping system information updated.

I am posting to say that I tend to set the IPs to match with a known offset.
For example:
192.168.5.12 is the host.
192.168.105.12 is the BMC.

A wiki is the great for documentation of use, links, and files.

MNByChoice ,

Code review still exists.

For now code reviews are done by competent people. What about once

AI makes creating new code disproportionately easy

?

Edit: Is it clear the quote, plus the items before and after are all one thought? I am hopeful, but not convinced.

Linux file transfer speed bottlenecks?

I'm currently watching the progress of a 4tB rsync file transfer, and i'm curious why the speeds are less than the theoretical read/write maximum speeds of the drives involved with the transfer. I know there's a lot that can effect transfer speeds, so I guess i'm not asking why my transfer itself isn't going faster. I'm more...

MNByChoice , (edited )

Looks like you have your answer, but there are a crazy number of possible issues.

The biggest cause is misreading the performance specs.

A partial list of other options:
Mechanical drives store data in rings. Outer rings have higher speeds than inner due to constant angular velocity.
Seeks cost a lot of throuput on mechanical drives.
Oversubscribed drive cables.
HBA issues.
PCIe data path conflicts
Slow RAM
RAM full or busy
Extra cpy within RAM
NUMA path issues (of drives are connected to different NUMA nodes. Not an issue on desktops.)
CPU too busy
Transfer software doing extra things
File system doing extra.
RAID doing extra.
NIC on a different NUMA node than HBA (can be good or bad).
NIC sharing the data path in a conflicting way.

There are others. Start with checking theoretical performance from data sheets.

Also, details matter, and I don't have enough of them to guess.

MNByChoice ,

I don't like that Opera now has an AI integrated.

I don't know that this article is compelling. Their main source of information was discredited in the article.

MNByChoice ,

I am, perhaps, too judgemental.

Since Hindenburg directly profits from the company's decline in stock, it's not an impartial source of information, but the company's other reports into companies like Nikola have held up to scrutiny.

MNByChoice ,

“Jewish by association”

Sounds pretty not good. Cultural appropriation with a side of self centeredness.

Also, pretty antisemitic.

Are there better words to clearly label this?

MNByChoice ,

Please give me one example of how sublinks is better than lemmy currently for use.

(I don't understand why new software instead of improving lemmy.)

MNByChoice ,

Sure, but not one of those is a reason to use it.

MNByChoice ,

Thank you. That was very clear. I look forward to seeing the results of the developments.

MNByChoice ,

Kinda related: what if I install something like Debian/Ubuntu on it? Can I still use the NAS hardware in the same way?

This question confuses me. Debian and Ubuntu can be setup to be NASes.

NAS is a description of a mid-level function that various software provide a part of.

Various file systems and volume managers can provide snapshots and rollbacks. To aid your research LVM, ZFS, and many others support snapshots.

There are various ways to then expose the formatted space to the network. To aid research NFS, SMB, and iSCSI are options.

Anyway, I hope this is helpful to someone.

There’s a Multibillion-Dollar Market for Your Phone’s Location Data – The Markup ( themarkup.org )

Location firm Near describes itself as “The World’s Largest Dataset of People’s Behavior in the Real-World,” with data representing “1.6B people across 44 countries.” Mobilewalla boasts “40+ Countries, 1.9B+ Devices, 50B Mobile Signals Daily, 5+ Years of Data.” X-Mode’s website claims its data covers “25%+ of...

MNByChoice ,

Always seemed the best way to stop this was to make someone important's data public.

Desktop icons not loading ( lemmy.blahaj.zone )

I've had this issue for a while now, since I thought I could fix it myself. Almost all my programs have lost their icon image, which is not fixable by applying a different icon theme unfortunately. Just installed the Reversal icon pack to test that. My settings are attached here, sorry for the german:...

MNByChoice ,

Have you recently fixed another issue? Perhaps run out of disk space during an update?

MNByChoice ,

Not really the focus here, but Google could really improve those listings by providing some guidance as to what permissions are actually required for certain tasks.

I am not certain I would know if am SMS program needs full Internet access or not.

(I get in this instance everything added is bad.)

MNByChoice ,

I had not, but I don't read the names. I will endeavor to notice. Thank you for the heads up.

MNByChoice ,

I don’t understand why people on here want so much to strengthen them ever further.

It is about a lawless company doing lawless things. Some of us want companies to follow the spirit, or at least the letter, of the law. We can change the law, but we need to discuss that.

MNByChoice ,

Debian stable is at 12.

MNByChoice ,

I wonder if the specifics of the hack would make backing up elsewhere fail. Possibly by spreading the hack to new machines.

In any case, testing backups is important.

Protecting HDDs from (external) train vibrations

I am worried that externally caused vibrations might damage my HDDs (NAS in the planning). The subway / metro runs under my building, and every time the train passes, this causes slight but measurable vibrations in the 50-100 Hz frequency range. It is more like a rumbling noise than the usual vibration of a passing train....

MNByChoice ,

Also consider rubber feet.

MNByChoice ,

Article from MARCH 17, 2023 8:00 AM.

They have not quit yet.

MNByChoice ,

I also didn’t get the joke. look for Sylgar.

MNByChoice ,

If you are a student, check if your school has a career center. Finding a job is a large topic, but many people just get lucky.

MNByChoice , (edited )

Yes. Fully possible.

Edit: Good grief, that is bleak.

MNByChoice ,

Not too ick someone’s yum, and this ventures outside of Linux.

I dislike the BSDs. Great for getting pf, and not being a homogeneous shop, but just different enough to be difficult outside of one specific use case.

Gentoo was similar. It may be different now, but a pain in the Xbox.

Mint was too dumbed down and ugly.

Ubuntu is useful, but likely harmful with it’s constant pushes to commercialize everything.

Redhat is needed for work, but the commercialization drives worse quality. Documentation seems purposely bad to drive training courses.

(Yes, I like Debian.)

[Thread, post or comment was deleted by the moderator]

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    MNByChoice ,

    The program manager got wind that we were seeing a lot of system crashes during testing, and he wanted to know why the redesigned system was crashing so much more often than the one it was replacing.

    When fixing things, sometimes it is important to go slow. Don’t expose all the hidden errors all at once. Save the company money a few percent at a time, not all at once. Big changes tend to get the wrong kind of attention.

    MNByChoice ,

    The CLI was there first. GUIs are still catching up.

    MNByChoice ,

    The vactrain dream only sleeps.

    en.m.wikipedia.org/wiki/Vactrain

    MNByChoice ,

    Neat read.

    To save time for those wondering if they care. (Definition on link from paper, but WAY down in the content.)

    CRDTs (Conflict-Free Replicated Data types) are fancy programming tools which let multiple users edit the same data at the same time.

    …wikipedia.org/…/Conflict-free_replicated_data_ty…

    Edit: My pet peeve is having to read and understand a significant amount before I can guess if I care about the subject.

    Built a new machine, the moment Unraid is running there are strange interference sounds. Edit: turning off Intel Turbo Boost Technology makes the sound go away.

    Built a small machine using an Asrock N100DC-ITX motherboard, it has an Intel N100 built in and I also have 1x NVMe and 2x HDDs. The board has a DC Jack so no external PSU....

    MNByChoice ,

    To me, it sounds like the HDDs. What is anything is using them? Often raids will scan then entire disk at initial setup.

    MNByChoice ,

    Power at idle and with Home Assistant running. I assume the noise is when the power draw is higher, but that is unclear.

    MNByChoice ,

    Does the sound correspond to the power draw?

    MNByChoice ,

    Cruel

    MNByChoice ,

    ZFS is a large consu6 of RAM. I would think putting swap in ZFS is a terrible idea. I have not checked current recommendations.

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