On Mon, 11 May 2015 16:09:44 +0200 Martin Wilck <martin.wilck@xxxxxxxxxxxxxx> wrote: > 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. > --- > 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); Thanks Martin! Applied, NeilBrown
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