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TRIM/UNMAP/DISCARD support for vdevs#924

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dechamps wants to merge 43 commits intoopenzfs:masteropenzfs/zfs:masterfrom dechamps:trimdechamps/zfs:trimCopy head branch name to clipboard

+1,182-49

Commits

Commits on Aug 31, 2012

• Add TRIM support for disk vdevs.

  Show description for cc6cd40
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  cc6cd40

Commits on Sep 1, 2012

• Fix "‘flags’ may be used uninitialized" GCC warning.

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  248da0c

• Fix null dereference bug in zio.

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  ce1e714

Commits on Sep 3, 2012

• Add TRIM support for file vdevs.

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  4e789e1

• Fix error handling in fop_space().

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  8889058

Commits on Sep 5, 2012

• Use EOPNOTSUPP instead of ENOTSUP when DISCARD isn't supported.

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  ce8d0bf

Commits on Sep 6, 2012

• Don't try to DISCARD if we know we can't.

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  95b1e94

• Don't ignore EOPNOTSUPP for file vdevs.

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  6a32827

• Don't allow live modification of zfs_notrim.

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  32d0e89

• Fix assertion failure due to stale inflight writes.

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  ac998d3

Commits on Sep 7, 2012

• Fix assertion failure due to inflight frees.

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  0a616c2

Commits on Sep 10, 2012

• Don't reset notrim after low-level vdev open.

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  51c1a59

Commits on Sep 12, 2012

• Make sure free ZIO sizes are correct for gang blocks.

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  19afab1

• Don't test for gang blocks when populating the trim map.

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  eefbe9b

• Use correct I/O size for free gang data blocks.

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  4f21d6f

Commits on Sep 14, 2012

• Don't TRIM after the SPA has been frozen.

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  5a53020

• Add trim_map.h to the list of header files.

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  dechamps

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  a324087

Commits on Sep 17, 2012

• Make sure zio->io_trim_node is empty on ZIO construction.

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  65be9d3

• Add ZIO TRIM statistics.

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  33194d4

• Explain why we're not using BLKDISCARD in fop_space().

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  58f7dd8

Commits on Sep 18, 2012

• Merge vdev_disk_io_trim() into __vdev_disk_physio().

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  fbc1546

• Add zfs_trim_zero parameter.

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  37806f0

• Use zfs_trim_zero=1 in ztest.

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  4cb878d

• Fix BIO memory issues when using TRIM on disk vdevs.

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  2bcfaf6

• Submit BIOs with the correct parameters.

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  d9ee94e

Commits on Sep 19, 2012

• Fix TRIM with ashift=12.

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  06e385f

• Add conditional compilation for old kernels.

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  906e314

Commits on Sep 20, 2012

• Remove useless configure checking.

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  464818e

• Fix an issue with a NULL zio buf free on raidz.

  Show description for dccbfaf
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  dccbfaf

• TRIM the whole vdev on create/add/attach.

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  8cbb5cd

Commits on Sep 21, 2012

• Take zfs_notrim into account when trimming whole vdevs.

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  a3adbc8

• Lock SCL_STATE while waiting for TRIM I/Os to complete.

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  b3dac52

• Don't use ZIO_FLAG_CONFIG_WRITER for TRIM ZIOs.

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  dabccd1

Commits on Sep 25, 2012

• Add TRIM support for L2ARC.

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  deda532

• Switch KM_SLEEP to KM_PUSHPAGE

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  94d6d97

• TRIM cache devices on export and remove.

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  4c1f8e1

• Trim whole cache vdev on pool destroy.

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  1f06386

Commits on Oct 3, 2012

• Don't register repair writes in the trim map.

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  7be8b0c

• Improve TXG handling in the TRIM module.

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  b967a38

• Silence the "task trim blocked" kernel message.

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  765351d

• Add TRIM TXG batching.

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  206dddd

• Simplify.

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  d08ba15

• TRIM cache devices based on time instead of TXGs.

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  5445fb9