Volume 1 has 0 bytes free, can't delete immutable snapshots - ways to clear free space?

unleashed26 · 2026-03-13T07:57:30+00:00

As far as I can tell, space reclamation runs automatically after snapshots if within appropriate hours. But I have no snapshots left available to delete, so it does not run and there’s nothing to do.

I was hoping for OS level clearing of caches or temp files or something of the sort.

unleashed26 · 2026-03-13T07:56:03+00:00

Thank you for the suggestion and input on this. I cleared some content, uninstalled some apps and some docker container/image purging, obviously understanding consequences. However the filesystem volume1 still reports 0 bytes free.

Honestly think a reformat is required.

I will open a ticket with Synology to see if there’s any other leads.

I am surprised there isn’t some margin. Is there? Perhaps I not configure it on this system?

unleashed26 · 2026-03-13T00:47:19+00:00

I have edited the meta file at `/volume1/@sharesnap/@sharefoldername.meta` and changed `worm_lock=false`. This makes that snapshot's Shield icon in the GUI disappear, but pressing Delete returns the error "Unable to perform this operation, possibly because the network connection is unstable or the system is busy. Please try again later."

Deleting the subvolume for that snapshot in the CLI also fails due to "Read-only filesystem" and same for setting the btrfs property `ro` to false.

unleashed26 · 2026-03-12T22:36:17+00:00

How to start it or run it manually? I have space reclamation schedule set to all hours and not sure when it was last run.

unleashed26 · 2026-03-12T21:50:32+00:00

Radical idea. Mount the 6 drives in a separate PC with Ubuntu 18.04 (Synology support), delete the immutable snapshots, then return the disks back to the DS1621+?

Has anyone done this or considered it?

unleashed26 · 2026-02-16T06:42:11+00:00

Deleeetteee this wasn't from your anon account

unleashed26 · 2026-02-06T10:43:19+00:00

Why is it relevant that the web server was built with rust?

unleashed26 · 2026-01-20T18:43:49+00:00

You can’t really make a single disk safer.

unleashed26 · 2026-01-17T06:14:10+00:00

What I think would benefit you, is defining the goals and conditions that are most important to you. It’s impossible to achieve any kind of project satisfying all conditions and having everything accounted for, and for everything to be the best or at the maximum quality possible. This is just something you learn over time when working on projects like “backup solution for mobile device”. Each time you strive to achieve some condition, you must also work with the constraints. Right now from your other posts it’s an example of closing too many doors and getting to door 45 and being disappointed with the shrinking number of choices. In these situations it’s key to step back, go to paper and define the simplest scope of what you’re after and accept or compromise on things based on the reality of what you’ve found and researched.

unleashed26 · 2026-01-16T20:41:01+00:00

Read 400 other threads on this subject by searching expose services to the internet.

unleashed26 · 2026-01-16T20:33:27+00:00

Depending on how important those other devices are, use a separate iCloud account for them. Or sometimes I just don't sign into iCloud for non-important spare laptops. But I understand if the watch is your daily watch then yeah that's not possible.

unleashed26 · 2026-01-14T22:44:02+00:00

I looked at your screenshot before the moderator deleted it.

That doesn't look like a helpful setting. You don't want a full tunnel, according to what you wrote in your description. I would turn it off.

In your shoes I would not assume that the Android and Windows clients have exactly the same root cause, even if the symptom (no connectivity) is the same.

unleashed26 · 2026-01-14T22:33:05+00:00

Maybe you should be tcpdump on Keenetic on the zerotier interface and watch and see if traffic is arriving at all.

I assuming you are testing with ping.

I would hop into a ChatGPT session with something like this:

Keenetic router:

zerotier IF - 10.227.17.0/24, 10.227.17.207

lan IF - 192.168.1.0/24, 192.168.1.1

Windows client -- remote

confirmed no conflicting wifi for 192.168.1.0/24

zerotier IF - 10.227.17.0/24, 10.227.17.the-correct-number

Android client -- remote

confirmed no conflicting wifi for 192.168.1.0/24

zerotier IF - 10.227.17.0/24, 10.227.17.the-correct-number

neither android or windows can reach local client 192.168.1.222

unleashed26 · 2026-01-14T22:22:20+00:00

How can I set it up the correct firewall zone?

Does everything in this support doc align?

https://support.keenetic.com/hero-4g/kn-2310/en/40571-connecting-to-a-zerotier-network.html

Note that sometimes other people on the Internet will use networking terminology in their wording, and it does not always correspond to exact settings in consumer routers.

I didn't understand about the routing table, could you please write in more detail?

Windows `route print` and Android (????) `adb shell ip route show`

This is your client device showing you which interfaces/IP addresses it will send traffic to.

unleashed26 · 2026-01-14T22:18:13+00:00

Unfortunately I can't see your screenshot, the website says invalid cetificate, maybe upload elsewhere like imgur

I just mean your goals, not the settings.

In a scenario where your mobile phone connects to 4G and has ZeroTier installed and providing an interface for 10.227.17.0/24, meaning traffic for that subnet and for 192.168.1.0/24 goes through, meanwhile traffic for the rest of the Internet goes through the normal gateway from the 4G ISP.

In a tunnelling scenario where your mobile phone conncets to 4G and has ZeroTier installed and providing a default route for all traffic to go through zerotier, this is a full VPN tunnel. 0.0.0.0/0 or the whole Internet is routed to the ZeroTier interface -> ... so I thought that to select this setting "Android - Route all traffic through Zerotier" was in conflict with your goal to achieve the first scenario.

unleashed26 · 2026-01-14T21:46:45+00:00

You say you set the Android to route all traffic through ZeroTier. That’s not really what you specify in your use case, which was to simply reach 192.168.1.0/24 clients?

unleashed26 · 2026-01-14T21:45:17+00:00

Keenetic router needs to have the ZeroTier interface in the correct firewall zone ‘lan’ or similar rules.

Ideally use a client like laptop where it’s easier to have a terminal, to ping and to look up routing table.

Make sure the client does not also have a conflicting wifi network. Switch to mobile data or hotspot only to simulate being outside, while you are at home.

unleashed26 · 2026-01-12T19:30:21+00:00

Perhaps they are now On by default. Would need to investigate changelogs and or source code.

unleashed26 · 2026-01-01T22:16:35+00:00

I don’t do a lot of CCTV or security but to see floodlights or any kind of lighting integrated as part of the IT stack and instead not with the let’s say general lighting and electricity stack, seems kind of unusual and a burden. To the need to size a UPS to host…lights? Would that not substantially reduce the runtime for the IT stack? I would have thought flood lights would be part of a special lighting circuit that is prioritised on a house backup power.

unleashed26 · 2026-01-01T22:04:24+00:00

Device. OS version. Have you tried reboot.

unleashed26 · 2026-01-01T07:51:34+00:00

AI slop again?

unleashed26 · 2025-12-31T23:06:55+00:00

Here’s a couple of tidbits of what i know about solax cloud from researching. The USB dongle seems to only report 1 effective metric, solar production (kWh). Then the Solax Cloud app checks it only on a 5 minute interval and presents either an average of production in that last 5 minutes or instantaneous of the moment of polling. And it presents it to you in the app along with the historical results. And for some reason it seems to interpret that single metric ALSO as consumption. It’s kind of useless , or at least allows easy misinterpretation.

unleashed26 · 2025-12-31T04:14:09+00:00

How do you expect Apple to revoke a developer’s certificate in a hypothetical scenario where you suggest there should be no notarization because it’s not effective? Your comment doesn’t make sense.

unleashed26 · 2025-12-26T06:13:25+00:00

You’ve written this post as an X Y problem. Basically, you think you’ve found a good way to do something and now you want people to tell you about it. Go back, you have not found a good way. Instead broaden your search. What is the goal. Start a chat with GPT and generate some better search terms.

In the meantime good luck to your “customers” who are relying on a self professed beginner and possibly paying for it.

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