If you have one backup, you have no backup. That's a hard lesson to learn, but if you care about those photos it's possible to recover them if you haven't written stuff on that sdcard yet.
this post was submitted on 21 Feb 2024
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At least 3 backups, 2 different media, 1 offsite location.
I like 3-2-1-1-0 better. Like yours, but:
- the additional 1 is for "offline" (so you have one offsite and offline backup copy).
- 0 for zero errors. Backups must be tested and verified.
Also, if you haven't tried to restore from backup, you have no backup.
Fuck up #1: no backups
Fuck up #2: using SD cards for data storage. SD cards and USB drives are ephemeral storage devices, not to be relied on. Most of the time they use file systems like FAT32 which are far less safe than NTFS or ext4. Use reliable storage media, like hard drives.
Fuck up #3: no backups.
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Unless youβve used something secure for formatting or wrote data to the SD after, consider attempting data recovery.
No luck with extundelete (segfault) and testdisk (sees some deleted files, but not /var/lib/docker). At least I can always throws it away and not worry about safety of my data! :)
You can always try professional data recovery services. It just depends on how much the data is worth to you.
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I'm just impressed an SD card in a Pi lasted since 2017 without losing all your data on its own.
For the future the general guideline is 3 copies of your data at minimum, so definitely set up some backups.
If you haven't done much writing to the SD card, you may be able to recover the data. Data isn't really "deleted", it is just labeled as deleted. There is software that can comb through the raw data and try to make sense of what files were there. I don't know of any specific software, so if anyone knows, please reply
Edit: Another commenter mentioned some success with DMDE
Edit 2: Worth mentioning that this is true of formats. As long as it doesn't zero out the entire media, it just edits the file system metadata to say there are no files.
PhotoRec and TestDisk are probably the best, but they don't recover file structure.
There's an old saying, "Unix is user friendly, it's just fussy about it's friends."
Unix is the kind of friend who won't bat an eye about holding your beer while you go and do something incredibly stupid
Everyone else is gonna be like "if you don't have at least 3 backups of something blahblah" but you know, not everyone has the finances for that, so advice from a cheapskate computer nerd: when going through critical transfers/reformats/deletions like you were doing, ALWAYS try actually recovering stuff from the backup before you cross the point of no return. E.g. if the backup is a .zip, extract a few individual files from it and open them in their respective programs.
Testdisk and photorec, use them, they even saved my data from bricked Chinese usb flash drive, so it'll save yours unless you wrote dd if /dev/zero of /*/microsd. Also here's the tip, don't attempt to rebuild partition firstly, first step try to copy all files from microsd to another device with these programs and after that try other ways, edit: I've seen from your other comments that your data already was overwritten, my condolences
Condolences
I know I'm going to get down voted for this but this would be almost impossible to fuck up with a gui. Yet people insist that writing commands manually is superior. I'm sorry for your loss.
Guardrails are absolutely not a reason why people prefer the CLI. We want the guardrails off so we can go faster.
This is on me for sure that I've never seen anyone be faster using a CLI compared to a GUI especially for basic operations which is what most of us do 95% of the time. I know there are specific cases where a command just does it better/easier but for me that's not the case for everyday stuff.
But what about the movies where the actors are typing commands and a visual GUI is moving around and updating on the screen (and making sound effects too).
Isn't that the best of all worlds? /s
Fair enough.
CLI is not about ease to begin with, it is about versatility.
There is something to be said about CLI applications being risky by default ("rm" doesn't prompt to ask, rsync --delete will do just that). But I've definitely slipped on the mouse button while "drag & dropping" files in a GUI before. And it can be a right mess if you move a bunch of individual files rather than a sub-folder...
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To play devil's advocate, tab completion would have also likely caught this. OP could have typed /mnt/t and it would autofill temp, or would show the matching options if it's ambiguous.
Sorry to hear, I feel you:
I wanted to delete all .m3u-files in my music collection when I learned:
find ./ -name "*.m3u" -delete -> this would have been the right way, all .m3u in the current folder would have been deleted.
find ./ -delete -name "*.m3u" -> WRONG, this just deletes the current folder and everything in it.
Who would have known, that the position of -delete actually matters.
I didn't know there was a -delete option to find! I've been piping to xargs -0 for decades!
Probably because it's easier to fuck up. With piping to xargs, you are forced to put the delete command last.
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I did this sort of mistakes too, luckily BTRFS snapshots are always here to save the day !
fd -tf -e m3u -x rm
loads all cores and nothing works faster
I can recommend fd to everyone frustrated with find, it has a much more intuitive interface imo, and it's also significantly faster.
I use GNU find every day and still have to google about the details. Only learnt about - delete the other day, good to know the position matters.
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Unlesa you did a full zeroing format the info might still be available. There was an applicarion that attempts to rebuild the partition / Filesystem from left over meta data or inode info. I forget the name unfortunately. Normall the strings command will get your photos but probably not if they were in a docker image database.
Testdisk and photorec? It's saved me heaps of times.
Those are good for sure. And maybe it was testdisk. There was one that just undeleted the partition table delete. as long as new data had not been written everthing would be intact
The bells of the Gion monastery in India echo with the warning that all things are impermanent.
My condolences :'(
I once lost a bunch of data because I accidently left a / at the end of a path... rsync can be dangerous lol
Rclone is superior IMHO, you have to explicitly name the output folder. Used to think it was a hassle but in hindsight being explicit about the destination reduces mistakes.
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Sorry to read that.
I've dded an external drive instead of an SD card once by mistake. I've never felt more stupid than that day.
Classic Disk Destroyer moment.
I think everyone has done this. I know I have. I believe I used dmda to recover all my photos back. Unfortunately I lost all the metadata for about 3000 photos. It took years to manually retap and redate them all but at least I didnβt lose them forever
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Oh man, even reading that hurt ':D I'm sorry for your loss.
You are probably out of luck. If you are lucky you can use gparted to recover deleted partitions
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:
| Fewer Letters | More Letters |
|---|---|
| RAID | Redundant Array of Independent Disks for mass storage |
| SSD | Solid State Drive mass storage |
| ZFS | Solaris/Linux filesystem focusing on data integrity |
3 acronyms in this thread; the most compressed thread commented on today has 7 acronyms.
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