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93cf20764a
4101 metaslab_debug should allow for fine-grained control
4102 space_maps should store more information about themselves
4103 space map object blocksize should be increased
4105 removing a mirrored log device results in a leaked object
4106 asynchronously load metaslab
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Sebastien Roy <seb@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>
Prior to this patch, space_maps were preferred solely based on the
amount of free space left in each. Unfortunately, this heuristic didn't
contain any information about the make-up of that free space, which
meant we could keep preferring and loading a highly fragmented space map
that wouldn't actually have enough contiguous space to satisfy the
allocation; then unloading that space_map and repeating the process.
This change modifies the space_map's to store additional information
about the contiguous space in the space_map, so that we can use this
information to make a better decision about which space_map to load.
This requires reallocating all space_map objects to increase their
bonus buffer size sizes enough to fit the new metadata.
The above feature can be enabled via a new feature flag introduced by
this change: com.delphix:spacemap_histogram
In addition to the above, this patch allows the space_map block size to
be increase. Currently the block size is set to be 4K in size, which has
certain implications including the following:
* 4K sector devices will not see any compression benefit
* large space_maps require more metadata on-disk
* large space_maps require more time to load (typically random reads)
Now the space_map block size can adjust as needed up to the maximum size
set via the space_map_max_blksz variable.
A bug was fixed which resulted in potentially leaking an object when
removing a mirrored log device. The previous logic for vdev_remove() did
not deal with removing top-level vdevs that are interior vdevs (i.e.
mirror) correctly. The problem would occur when removing a mirrored log
device, and result in the DTL space map object being leaked; because
top-level vdevs don't have DTL space map objects associated with them.
References:
https://www.illumos.org/issues/4101
https://www.illumos.org/issues/4102
https://www.illumos.org/issues/4103
https://www.illumos.org/issues/4105
https://www.illumos.org/issues/4106
https://github.com/illumos/illumos-gate/commit/0713e23
Porting notes:
A handful of kmem_alloc() calls were converted to kmem_zalloc(). Also,
the KM_PUSHPAGE and TQ_PUSHPAGE flags were used as necessary.
Ported-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Prakash Surya <surya1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2488
102 lines
5.0 KiB
Makefile
102 lines
5.0 KiB
Makefile
MODULE := zfs
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EXTRA_CFLAGS = $(ZFS_MODULE_CFLAGS) @KERNELCPPFLAGS@
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obj-$(CONFIG_ZFS) := $(MODULE).o
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$(MODULE)-objs += @top_srcdir@/module/zfs/arc.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/bplist.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/bpobj.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dbuf.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dbuf_stats.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/bptree.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/ddt.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/ddt_zap.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dmu.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dmu_diff.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dmu_object.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dmu_objset.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dmu_send.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dmu_traverse.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dmu_tx.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dmu_zfetch.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dnode.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dnode_sync.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_dataset.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_deadlist.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_deleg.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_dir.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_pool.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_prop.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_scan.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_synctask.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/fm.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/gzip.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/lzjb.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/lz4.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/metaslab.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/range_tree.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/refcount.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/rrwlock.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/sa.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/sha256.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/spa.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/spa_boot.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/spa_config.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/spa_errlog.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/spa_history.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/spa_misc.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/spa_stats.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/space_map.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/space_reftree.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/txg.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/uberblock.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/unique.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_cache.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_disk.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_file.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_label.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_mirror.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_missing.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_queue.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_raidz.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/vdev_root.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zap.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zap_leaf.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zap_micro.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfeature.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfeature_common.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_acl.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_byteswap.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_ctldir.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_debug.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_dir.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_fm.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_fuid.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_ioctl.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_log.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_onexit.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_replay.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_rlock.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_sa.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_vfsops.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_vnops.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zfs_znode.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zil.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zio.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zio_checksum.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zio_compress.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zio_inject.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zle.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zpl_ctldir.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zpl_export.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zpl_file.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zpl_inode.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zpl_super.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zpl_xattr.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zrlock.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/zvol.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_destroy.o
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$(MODULE)-objs += @top_srcdir@/module/zfs/dsl_userhold.o
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