![]() DM cache now defaults to passing discards down to the origin device. User may disable this using the "no_discard_passdown" feature when creating the cache device. If the cache's underlying origin device doesn't support discards then passdown is disabled (with warning). Similarly, if the underlying origin device's max_discard_sectors is less than a cache block discard passdown will be disabled (this is required because sizing of the cache internal discard bitset depends on it). Signed-off-by: Mike Snitzer <snitzer@redhat.com> |
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.. | ||
cache-policies.txt | ||
cache.txt | ||
delay.txt | ||
dm-crypt.txt | ||
dm-flakey.txt | ||
dm-init.txt | ||
dm-integrity.txt | ||
dm-io.txt | ||
dm-log.txt | ||
dm-queue-length.txt | ||
dm-raid.txt | ||
dm-service-time.txt | ||
dm-uevent.txt | ||
dm-zoned.txt | ||
era.txt | ||
kcopyd.txt | ||
linear.txt | ||
log-writes.txt | ||
persistent-data.txt | ||
snapshot.txt | ||
statistics.txt | ||
striped.txt | ||
switch.txt | ||
thin-provisioning.txt | ||
unstriped.txt | ||
verity.txt | ||
writecache.txt | ||
zero.txt |