[linux-lvm] cache on SSD makes system unresponsive
pattonme at yahoo.com
Sat Oct 21 16:08:42 UTC 2017
> But if it's something that only exhibits in writeback mode rather than writethrough, then I'd guess it's to do with the
> list of writeback work that the policy builds. So check
OP is being coy about the DD command but I saw it mentioned off-hand earlier.
dd if=/250GB_file/on_LVM/H800_vdev of=/dev/null
It's a pure, streaming read. LVM cache should be doing absolutely nothing.
More information about the linux-lvm