From b87fdf4e891093e4a98f724d4a5f013fcaa94168 Mon Sep 17 00:00:00 2001 From: Martin Wilck Date: Mon, 11 May 2015 16:09:44 +0200 Subject: [PATCH] DDF: _write_super_to_disk: fix anchor header type Since commit 30bee0201, the anchor is updated from the active DDF header. This requires fixing the header type before the anchor is written. The LSI Software RAID code will reject DDF meta data with wrong anchor type and will erase all meta data when it encounters such a broken anchor. Thus starting Linux md once on a system with LSI RAID BIOS may cause the meta data to get destroyed. Signed-off-by: NeilBrown --- super-ddf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/super-ddf.c b/super-ddf.c index d0b2ac7..faaf0a7 100644 --- a/super-ddf.c +++ b/super-ddf.c @@ -3158,6 +3158,7 @@ static int _write_super_to_disk(struct ddf_super *ddf, struct dl *d) memcpy(&ddf->primary, &ddf->anchor, 512); memcpy(&ddf->secondary, &ddf->anchor, 512); + ddf->anchor.type = DDF_HEADER_ANCHOR; ddf->anchor.openflag = 0xFF; /* 'open' means nothing */ ddf->anchor.seq = cpu_to_be32(0xFFFFFFFF); /* no sequencing in anchor */ ddf->anchor.crc = calc_crc(&ddf->anchor, 512);