Hi Coli!
El 04/06/2021 a las 14:05, Coly Li escribió:
What is the kernel version and where do you have the kernel ? And what
is the workload on your machine ?
I'm using debian 10 with default debian kernel (4.19.0-16-amd64) in host
and guests.
For virtualization I'm using KVM.
There is a host, where bcache is running. The filesystem over bcache
device is ext4. In that filesystem there is only 9 qcow2 files user by
three VM guests. Two VM are running small nextcloud instances, another
one is running transmission (bittorrent) for feeding debian and other
distro iso files (30 files - 60 GiB approx.)
Most of the read requests are missing, so they will read from backing
device and refilled into cache device as used-and-clean data. Once there
is no enough space to hold more read-cached data, garbage colleague may
retire the used-and-clean data very fast and make available room for new
refilling read data. The 19GB data might be existing data from last time gc.
Is it possible to know GC last execution time?
Regards and thank you.
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