I'm using dm-cache on such setup:
dm-cache -> luks -> lvm2 ->ext4
Kernel version: 3.13.0-43
On high disk load (ie when saving virtual machine state) whole system
freezes for a few seconds.
I've tried already to change scheduler (from deadline to cbq), change
ext4 mount options, now i've got:
errors=remount-ro,noatime,nodiratime,discard,barrier=0,relatime
There is something I should check, or maybe it's a 'normal' behaviour,
or maybe my whole setup is wrong?
--
Best Regards
Michał Zubkowicz
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