K 10
svn:author
V 3
smh
K 8
svn:date
V 27
2013-10-24T15:21:20.731421Z
K 7
svn:log
V 376
MFC r256889:

Use the vdev's ashift to calculate the supported min block size passed to
zio_compress_data(..) when compressing l2arc buffers.

This eliminates L2ARC I/O errors, which resulted in very poor performance on
vdev's configured with block size greater than 512b due to compression
assuming a smaller min block size than the vdev supports.

Approved by:	re (glebius)

END