_thebrain_

@_thebrain_@sh.itjust.works

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_thebrain_,

Fedora is systems, right? The easiest way to gain some (temporary) space is to clean out the journal and whatever logs you don’t need. It can grow quite big.


<span style="color:#323232;">sudo journalctl --vacuum-size=100M
</span>

Will shrink it to something manageable. This will buy you some time to clean up until the journal grows again.

Also, clearing the apt cache will probably help free up some root partition space


<span style="color:#323232;">sudo apt clean
</span>

Your root partition where packages are stored and all the logs and transactional databases might be full even if your home directory has tons of free space.

_thebrain_,

Duh… Fedora not Ubuntu/Debian/Et al.


<span style="color:#323232;">sudo dnf clean
</span>

It’s been a while since I have run a redhat derivative… I think that was either the last iteration of mandrake or the first iteration of mandriva.

And the journal isn’t garbage persay, it’s a bunch of logs and whatnot that can be useful in certain diagnostics… Especially with op running all those snap packages. But in this case, clearing it is probably a better option then not clearing it

_thebrain_,

Btrfs uses subvolumes instead of traditional partitioning. It takes some getting use to but it is totally normal for btrfs.

_thebrain_,

Btrfs and df don’t get along. There are all sorts of internals to btrfs that non btrfs utils ignore. You should run


<span style="color:#323232;">sudo btrfs filesystem df /
</span><span style="color:#323232;">sudo btrfs device usage /
</span>

It will give you a better picture of what is going on.

Balancing my help as someone above pointed out, or you may need to boot to a live media of some kind and rebuild the free space cache. Especially with btrfs I encourage people to join their mailing list for help. The devs are awesome and can help you get sorted out.

Repairing bad sectors in an external drive

So I have this external 2.5" drive salvaged from an old laptop of mine. I was trying to use it to backup/store data but the transfer to the drive fails repeatedly at the ~290GB mark leading me to believe that maybe there is a bad sector on the drive. I tried to inspect the drive using smartmontools and smartctl but since it is...

_thebrain_, (edited )

You should be able to use smartctl on a USB drive. I’ve never had an issue anyway. You may need to specify the transport type tho. I had a drive that it couldn’t figure out on its own, but since it was an sata drive in an external enclosure, atapi is the transport protocol to use

sudo smartctl -a -d ata /dev/<devid>

Using the same switch you can run a long test. It’s sort of a pain as it will kill the test on finding a bad sector. But you can take that sector number and plug it into hdparm to rewrite the sector hoping it will remap it. You won’t be able to recover the data in a bad sector, But There are these extra sectors on the drive that firmware can replace the bad one with. It does this on a forced write command.Something along the lines of

hdparm --repair-sector --yes-i-know-what-i-am-doing </dev/<driveid> <sector number from smartctl>

Again, you have data loss, you can’t go back to no loss. All you can do is rescue anything important. You may (probably) need to run a long smartctl test again, and fix another sector. I have saved data off of drives with 100+ bad sectors this way… It’s tedious and eventually I scripted it but it does work.

_thebrain_,

Can you plug the drive in directly and test it? You might also just have a dead drive. Either way if you were planning on using it as a backup medium I would tell you it’s probably not a good idea. If you are trying to recover data from it, good luck. Is it making any sound? You could try buying the same, old but good hard drive and swapping the control board on it. You may also have to swap the nvram chip on it to make sure you have the same sector mappings. Either way there is a lot of stuff you can try, but hopefully this is an educational experience for you (as in learning how to recover a dead drive, not as in learning about the need for proper backup methods) as opposed to a desperate attempt to recover data that is most likely unrecoverable.

_thebrain_,

That is my absolute favorite sermon!!

_thebrain_,

It’s almost guaranteed that we will be back here in 10 days and he will be crying he can’t secure the 175 million dollar bond either. It’s not that insurance companies won’t write a bond that high, it’s that they are finally coming around to the fact that he is going to fuck them over no matter what.

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