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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 <neilb@suse.de>
This commit is contained in:
Martin Wilck 2015-05-11 16:09:44 +02:00 committed by NeilBrown
parent 3c899cab4d
commit b87fdf4e89
1 changed files with 1 additions and 0 deletions
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super-ddf.c
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@ -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);