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Make ZFS ignore stripe sizes above SPA_MAXASHIFT (8KB).

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If device has stripe size bigger then maximal sector size supported by
ZFS, there is nothing can be done to avoid read-modify-write cycles.
Taking that stripe size into account will only reduce space efficiency
and pointlessly bother user with warnings that can not be fixed.

Discussed with:	smh
This commit is contained in:
mav 2016-03-10 16:39:46 +00:00
parent 0022e5410b
commit 9a3b845122
1 changed files with 1 additions and 1 deletions
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2
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_geom.c
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@ -812,7 +812,7 @@ vdev_geom_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
*logical_ashift = highbit(MAX(pp->sectorsize, SPA_MINBLOCKSIZE)) - 1;
*physical_ashift = 0;
if (pp->stripesize > (1 << *logical_ashift) && ISP2(pp->stripesize) &&
pp->stripeoffset == 0)
pp->stripesize <= (1 << SPA_MAXASHIFT) && pp->stripeoffset == 0)
*physical_ashift = highbit(pp->stripesize) - 1;
/*