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| author | Martin Wilck <mwilck@arcor.de> | 2013-07-30 23:18:28 +0200 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2013-07-31 12:47:44 +1000 |
| commit | 0e5fa86239cfa4cb5fbdbf46c14ddcb58708efc4 (patch) | |
| tree | 418950b1d3cf653023ce6335ffea49408e15abf9 /super-ddf.c | |
| parent | 0847945b8ebb59e2dd7c6bb55246be355f5b3472 (diff) | |
| download | mdadm-0e5fa86239cfa4cb5fbdbf46c14ddcb58708efc4.tar.gz | |
DDF: load_ddf_header: more error logging
Try to determine problem if load_ddf_header fails. May be useful
for determining compatibility problems with Fake RAID BIOSes.
Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'super-ddf.c')
| -rw-r--r-- | super-ddf.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/super-ddf.c b/super-ddf.c index b639f07f..f55cc11b 100644 --- a/super-ddf.c +++ b/super-ddf.c @@ -754,18 +754,24 @@ static int load_ddf_header(int fd, unsigned long long lba, if (read(fd, hdr, 512) != 512) return 0; - if (!be32_eq(hdr->magic, DDF_HEADER_MAGIC)) + if (!be32_eq(hdr->magic, DDF_HEADER_MAGIC)) { + pr_err("%s: bad header magic\n", __func__); return 0; - if (!be32_eq(calc_crc(hdr, 512), hdr->crc)) + } + if (!be32_eq(calc_crc(hdr, 512), hdr->crc)) { + pr_err("%s: bad CRC\n", __func__); return 0; + } if (memcmp(anchor->guid, hdr->guid, DDF_GUID_LEN) != 0 || memcmp(anchor->revision, hdr->revision, 8) != 0 || !be64_eq(anchor->primary_lba, hdr->primary_lba) || !be64_eq(anchor->secondary_lba, hdr->secondary_lba) || hdr->type != type || memcmp(anchor->pad2, hdr->pad2, 512 - - offsetof(struct ddf_header, pad2)) != 0) + offsetof(struct ddf_header, pad2)) != 0) { + pr_err("%s: header mismatch\n", __func__); return 0; + } /* Looks good enough to me... */ return 1; |