From 1c55b38aeb696ce04e221122ef481710d7baef65 Mon Sep 17 00:00:00 2001 From: smh Date: Tue, 22 Oct 2013 13:31:36 +0000 Subject: [PATCH] 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 --- sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c index e76b3484fce9..505c7c50d1dc 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c @@ -5147,7 +5147,7 @@ l2arc_compress_buf(l2arc_buf_hdr_t *l2hdr) 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 */