Dne 21. 09. 20 v 10:51 Roy Sigurd Karlsbakk napsal(a):
Hi all
I have an ssd hooked up to my system to do some caching of the raid-6 array. Now, that SSD isn't very new and has started developing some smart errors, so I thought I'd just remove it and find a nice recycle bin for it. However, this fails.
Hmm - cache isn't yet very easy to use once you start to have faulty devices
in your device stack
This is Debian Buster (latest) with kernel 5.4 and lvm 2.03.02(2)
Any idea how to get rid of this?
# lvconvert --uncache data/data
Unknown feature in status: 8 2488/262144 128 819192/819200 57263288 35277148 19955332 9916661 0 1 1 3 metadata2 writethrough no_discard_passdown 2 migration_threshold 2048 smq 0 rw -
However since you have 'writethrough' cache mode - it should be possible to
use 'lvconvert --uncache --force'
But I'm somehow confused how you can have any dirty blocks in this case ??
lvm2 2.03.02 version was somewhat experimental release - so I've recommend
something newer - which will also properly parse newer status output from
newer kernel dm-cache module.
Regards
Zdenek
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