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Enable Bitrot on Files: MV or CP?
So I want to make sure that bitrot protection is enabled on my files, I don't recall if I had it enabled on my shares before files were placed there. According to the documentation you can create a ...
You can use "lsattr" to check if a file has CoW enabled or not.
Here my txt file does not have CoW enabled, denoted by the "C" in the end.
root@Databak:~# lsattr /data/Data-dump/MyFile_NoCoW.txt ---------------C /data/Data-dump/MyFile_NoCoW.txt
Here is what a file looks like, that has CoW enabled.
root@Databak:~# lsattr /data/Data-dump/MyFile_CoW.txt ---------------- /data/Data-dump/MyFile_CoW.txt
I don't think the "mv" command is enough to trigger CoW on a file that has previously been marked for No CoW - due to reasons that StephenB mentioned. I think you need to re-create the file - i.e. "cp"
But you can check on the files you moved :)
You can use "lsattr" to check if a file has CoW enabled or not.
Here my txt file does not have CoW enabled, denoted by the "C" in the end.
root@Databak:~# lsattr /data/Data-dump/MyFile_NoCoW.txt ---------------C /data/Data-dump/MyFile_NoCoW.txt
Here is what a file looks like, that has CoW enabled.
root@Databak:~# lsattr /data/Data-dump/MyFile_CoW.txt ---------------- /data/Data-dump/MyFile_CoW.txt
I don't think the "mv" command is enough to trigger CoW on a file that has previously been marked for No CoW - due to reasons that StephenB mentioned. I think you need to re-create the file - i.e. "cp"
But you can check on the files you moved :)
Confirmed that moved files have the C attribute, thus lacking CoW. Newly copied files are created without the C attribute, thus having CoW. Weird that they display it like this.
For the sake of making sure that CoW is enabled on these I think I should just copy and be done with it, rather than risking issues later if changing the attribute doesn't perform as needed.
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