Date: Tue, 15 Mar 2011 06:53:33 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r219659 - projects/graid/head/sys/geom/raid Message-ID: <201103150653.p2F6rXnN024405@svn.freebsd.org>
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Author: mav Date: Tue Mar 15 06:53:33 2011 New Revision: 219659 URL: http://svn.freebsd.org/changeset/base/219659 Log: Prefer to use CONCAT transformation module for any array with only one disk. AMD/ATI RAID BIOS for some reason writes RAIDREADY disk as 1-disk RAID0, not as JBOD. Not sure Promise BIOS does the same to just map it at MD. 1-disk RAID0 is also works fine, but CONCAT is more efficient there. Modified: projects/graid/head/sys/geom/raid/tr_concat.c Modified: projects/graid/head/sys/geom/raid/tr_concat.c ============================================================================== --- projects/graid/head/sys/geom/raid/tr_concat.c Tue Mar 15 06:07:02 2011 (r219658) +++ projects/graid/head/sys/geom/raid/tr_concat.c Tue Mar 15 06:53:33 2011 (r219659) @@ -73,7 +73,7 @@ static struct g_raid_tr_class g_raid_tr_ "CONCAT", g_raid_tr_concat_methods, sizeof(struct g_raid_tr_concat_object), - .trc_priority = 100 + .trc_priority = 50 }; static int @@ -83,7 +83,9 @@ g_raid_tr_taste_concat(struct g_raid_tr_ trs = (struct g_raid_tr_concat_object *)tr; if (tr->tro_volume->v_raid_level != G_RAID_VOLUME_RL_SINGLE && - tr->tro_volume->v_raid_level != G_RAID_VOLUME_RL_CONCAT) + tr->tro_volume->v_raid_level != G_RAID_VOLUME_RL_CONCAT && + !(tr->tro_volume->v_disks_count == 1 && + tr->tro_volume->v_raid_level != G_RAID_VOLUME_RL_UNKNOWN)) return (G_RAID_TR_TASTE_FAIL); trs->trso_starting = 1; return (G_RAID_TR_TASTE_SUCCEED);
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