Author: smh
Date: Tue Oct 22 13:31:36 2013
New Revision: 256889
URL: http://svnweb.freebsd.org/changeset/base/256889
Log:
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.
MFC after: 2 days
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Tue Oct 22
12:58:22 2013 (r256888)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Tue Oct 22
13:31:36 2013 (r256889)
@@ -5147,7 +5147,7 @@ l2arc_compress_buf(l2arc_buf_hdr_t *l2hd
len = l2hdr->b_asize;
cdata = zio_data_buf_alloc(len);
csize = zio_compress_data(ZIO_COMPRESS_LZ4, l2hdr->b_tmp_cdata,
- cdata, l2hdr->b_asize, (size_t)SPA_MINBLOCKSIZE);
+ cdata, l2hdr->b_asize, (size_t)(1ULL <<
l2hdr->b_dev->l2ad_vdev->vdev_ashift));
if (csize == 0) {
/* zero block, indicate that there's nothing to write */
_______________________________________________
svn-src-head@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
