On Fri, Feb 7, 2020 at 11:30 AM Reindl Harald [off-list ref] wrote:

Am 07.02.20 um 17:26 schrieb o1bigtenor:

quoted

On Fri, Feb 7, 2020 at 9:53 AM Reindl Harald [off-list ref] wrote:

quoted

Am 07.02.20 um 16:49 schrieb o1bigtenor:

quoted

Running a Raid-10 array made up of 4 - 1 TB drives on a debian testing
(11) system.
mdadm - v4.1 - 2018-10-01 is the version being used.

Some weirdness is happening - - - vis a vis - - - I have one directory
(not small) that has disappeared. I last accessed said directory
(still have the pdf open which is how I could get this information)
'Last accessed 2020-01-19 6:32 A.M.'  as indicated in the 'Properties'
section of the file in question.

Has been suggested to me that I make the array read only until this is resolved.
I have space on the the array on a different system to recover this array.
Suggestions on how to do both of the above would be aprreciated

directories on a filesystem on top of a RAID don't disappear silently -
my bet is a simple drag&drop move or deletion aka PEBCAK

I checked with bash - - history  and in about 500 items there is no mention of
such. Looked in log files and can't find anything either. Quite
puzzling - - - -
that's why I'm asking here.

And yes - - - I am aware that all too often I'm the problem. I've
gotten a lot more
careful that I was even 5 years ago - - - grin.

if you shave no system error showing any evidence you are wrong here -
even if it would be true witout any errors message you are wrong here
because it's the same as asking if your neighbours dog pissed on your wall

even with a filesystem error you are wrong here and it's impossible that
the raid forget about exactly one folder because that layer don't now
about folders and the FS would puke if a complete area desiapperas at
running fsck - period

I understand that this is a highly unusual occurrence.

That's why I'm asking here.

Regards