2613eab119
This new selector keeps an exponential moving average of the service time for each path (losely defined as delta between start_io and end_io), and uses this along with the number of inflight requests to estimate future service time for a path. Since we don't have a prober to account for temporally slow paths, re-try "slow" paths every once in a while (num_paths * historical_service_time). To account for fast paths transitioning to slow, if a path has not completed any request within (num_paths * historical_service_time), limit the number of outstanding requests. To account for low volume situations where number of inflight IOs would be zero, the last finish time of each path is factored in. Signed-off-by: Khazhismel Kumykov <khazhy@google.com> Co-developed-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
93 lines
3.3 KiB
Makefile
93 lines
3.3 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the kernel software RAID and LVM drivers.
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#
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dm-mod-y += dm.o dm-table.o dm-target.o dm-linear.o dm-stripe.o \
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dm-ioctl.o dm-io.o dm-kcopyd.o dm-sysfs.o dm-stats.o \
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dm-rq.o
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dm-multipath-y += dm-path-selector.o dm-mpath.o
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dm-snapshot-y += dm-snap.o dm-exception-store.o dm-snap-transient.o \
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dm-snap-persistent.o
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dm-mirror-y += dm-raid1.o
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dm-log-userspace-y \
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+= dm-log-userspace-base.o dm-log-userspace-transfer.o
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dm-bio-prison-y += dm-bio-prison-v1.o dm-bio-prison-v2.o
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dm-thin-pool-y += dm-thin.o dm-thin-metadata.o
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dm-cache-y += dm-cache-target.o dm-cache-metadata.o dm-cache-policy.o \
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dm-cache-background-tracker.o
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dm-cache-smq-y += dm-cache-policy-smq.o
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dm-ebs-y += dm-ebs-target.o
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dm-era-y += dm-era-target.o
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dm-clone-y += dm-clone-target.o dm-clone-metadata.o
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dm-verity-y += dm-verity-target.o
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md-mod-y += md.o md-bitmap.o
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raid456-y += raid5.o raid5-cache.o raid5-ppl.o
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dm-zoned-y += dm-zoned-target.o dm-zoned-metadata.o dm-zoned-reclaim.o
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linear-y += md-linear.o
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multipath-y += md-multipath.o
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faulty-y += md-faulty.o
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# Note: link order is important. All raid personalities
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# and must come before md.o, as they each initialise
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# themselves, and md.o may use the personalities when it
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# auto-initialised.
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obj-$(CONFIG_MD_LINEAR) += linear.o
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obj-$(CONFIG_MD_RAID0) += raid0.o
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obj-$(CONFIG_MD_RAID1) += raid1.o
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obj-$(CONFIG_MD_RAID10) += raid10.o
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obj-$(CONFIG_MD_RAID456) += raid456.o
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obj-$(CONFIG_MD_MULTIPATH) += multipath.o
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obj-$(CONFIG_MD_FAULTY) += faulty.o
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obj-$(CONFIG_MD_CLUSTER) += md-cluster.o
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obj-$(CONFIG_BCACHE) += bcache/
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obj-$(CONFIG_BLK_DEV_MD) += md-mod.o
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obj-$(CONFIG_BLK_DEV_DM) += dm-mod.o
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obj-$(CONFIG_BLK_DEV_DM_BUILTIN) += dm-builtin.o
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obj-$(CONFIG_DM_UNSTRIPED) += dm-unstripe.o
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obj-$(CONFIG_DM_BUFIO) += dm-bufio.o
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obj-$(CONFIG_DM_BIO_PRISON) += dm-bio-prison.o
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obj-$(CONFIG_DM_CRYPT) += dm-crypt.o
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obj-$(CONFIG_DM_DELAY) += dm-delay.o
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obj-$(CONFIG_DM_DUST) += dm-dust.o
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obj-$(CONFIG_DM_FLAKEY) += dm-flakey.o
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obj-$(CONFIG_DM_MULTIPATH) += dm-multipath.o dm-round-robin.o
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obj-$(CONFIG_DM_MULTIPATH_QL) += dm-queue-length.o
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obj-$(CONFIG_DM_MULTIPATH_ST) += dm-service-time.o
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obj-$(CONFIG_DM_MULTIPATH_HST) += dm-historical-service-time.o
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obj-$(CONFIG_DM_SWITCH) += dm-switch.o
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obj-$(CONFIG_DM_SNAPSHOT) += dm-snapshot.o
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obj-$(CONFIG_DM_PERSISTENT_DATA) += persistent-data/
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obj-$(CONFIG_DM_MIRROR) += dm-mirror.o dm-log.o dm-region-hash.o
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obj-$(CONFIG_DM_LOG_USERSPACE) += dm-log-userspace.o
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obj-$(CONFIG_DM_ZERO) += dm-zero.o
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obj-$(CONFIG_DM_RAID) += dm-raid.o
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obj-$(CONFIG_DM_THIN_PROVISIONING) += dm-thin-pool.o
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obj-$(CONFIG_DM_VERITY) += dm-verity.o
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obj-$(CONFIG_DM_CACHE) += dm-cache.o
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obj-$(CONFIG_DM_CACHE_SMQ) += dm-cache-smq.o
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obj-$(CONFIG_DM_EBS) += dm-ebs.o
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obj-$(CONFIG_DM_ERA) += dm-era.o
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obj-$(CONFIG_DM_CLONE) += dm-clone.o
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obj-$(CONFIG_DM_LOG_WRITES) += dm-log-writes.o
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obj-$(CONFIG_DM_INTEGRITY) += dm-integrity.o
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obj-$(CONFIG_DM_ZONED) += dm-zoned.o
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obj-$(CONFIG_DM_WRITECACHE) += dm-writecache.o
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ifeq ($(CONFIG_DM_INIT),y)
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dm-mod-objs += dm-init.o
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endif
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ifeq ($(CONFIG_DM_UEVENT),y)
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dm-mod-objs += dm-uevent.o
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endif
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ifeq ($(CONFIG_DM_VERITY_FEC),y)
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dm-verity-objs += dm-verity-fec.o
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endif
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ifeq ($(CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG),y)
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dm-verity-objs += dm-verity-verify-sig.o
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endif
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