diff options
| author | Matthew Ahrens <[email protected]> | 2014-11-03 12:15:08 -0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2015-05-11 12:23:16 -0700 |
| commit | f1512ee61e2f22186ac16481a09d86112b2d6788 (patch) | |
| tree | 6098f841f27955f13d4c2a53b2a4826b5f3bacda /module/zfs/sa.c | |
| parent | 3df293404a102398445fc013b67250073db9004e (diff) | |
Illumos 5027 - zfs large block support
5027 zfs large block support
Reviewed by: Alek Pinchuk <[email protected]>
Reviewed by: George Wilson <[email protected]>
Reviewed by: Josef 'Jeff' Sipek <[email protected]>
Reviewed by: Richard Elling <[email protected]>
Reviewed by: Saso Kiselkov <[email protected]>
Reviewed by: Brian Behlendorf <[email protected]>
Approved by: Dan McDonald <[email protected]>
References:
https://www.illumos.org/issues/5027
https://github.com/illumos/illumos-gate/commit/b515258
Porting Notes:
* Included in this patch is a tiny ISP2() cleanup in zio_init() from
Illumos 5255.
* Unlike the upstream Illumos commit this patch does not impose an
arbitrary 128K block size limit on volumes. Volumes, like filesystems,
are limited by the zfs_max_recordsize=1M module option.
* By default the maximum record size is limited to 1M by the module
option zfs_max_recordsize. This value may be safely increased up to
16M which is the largest block size supported by the on-disk format.
At the moment, 1M blocks clearly offer a significant performance
improvement but the benefits of going beyond this for the majority
of workloads are less clear.
* The illumos version of this patch increased DMU_MAX_ACCESS to 32M.
This was determined not to be large enough when using 16M blocks
because the zfs_make_xattrdir() function will fail (EFBIG) when
assigning a TX. This was immediately observed under Linux because
all newly created files must have a security xattr created and
that was failing. Therefore, we've set DMU_MAX_ACCESS to 64M.
* On 32-bit platforms a hard limit of 1M is set for blocks due
to the limited virtual address space. We should be able to relax
this one the ABD patches are merged.
Ported-by: Brian Behlendorf <[email protected]>
Closes #354
Diffstat (limited to 'module/zfs/sa.c')
| -rw-r--r-- | module/zfs/sa.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/module/zfs/sa.c b/module/zfs/sa.c index 8e857e129..a3fcea87b 100644 --- a/module/zfs/sa.c +++ b/module/zfs/sa.c @@ -504,7 +504,7 @@ sa_resize_spill(sa_handle_t *hdl, uint32_t size, dmu_tx_t *tx) if (size == 0) { blocksize = SPA_MINBLOCKSIZE; - } else if (size > SPA_MAXBLOCKSIZE) { + } else if (size > SPA_OLD_MAXBLOCKSIZE) { ASSERT(0); return (SET_ERROR(EFBIG)); } else { @@ -693,7 +693,7 @@ sa_build_layouts(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc, int attr_count, hdrsize = sa_find_sizes(sa, attr_desc, attr_count, hdl->sa_bonus, SA_BONUS, &spill_idx, &used, &spilling); - if (used > SPA_MAXBLOCKSIZE) + if (used > SPA_OLD_MAXBLOCKSIZE) return (SET_ERROR(EFBIG)); VERIFY(0 == dmu_set_bonus(hdl->sa_bonus, spilling ? @@ -717,7 +717,7 @@ sa_build_layouts(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc, int attr_count, attr_count - spill_idx, hdl->sa_spill, SA_SPILL, &i, &spill_used, &dummy); - if (spill_used > SPA_MAXBLOCKSIZE) + if (spill_used > SPA_OLD_MAXBLOCKSIZE) return (SET_ERROR(EFBIG)); if (BUF_SPACE_NEEDED(spill_used, spillhdrsize) > |