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Show the wanted checksum in bad-superblock-checksum exception

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Ming-Hung Tsai 2016-02-27 01:31:24 +08:00
parent d2260dee34
commit b47c02ed8b
1 changed files with 5 additions and 2 deletions
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7
thin-provisioning/superblock.cc
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@ -91,8 +91,11 @@ namespace {
superblock_disk const *sbd = reinterpret_cast<superblock_disk const *>(raw); superblock_disk const *sbd = reinterpret_cast<superblock_disk const *>(raw);
crc32c sum(SUPERBLOCK_CSUM_SEED); crc32c sum(SUPERBLOCK_CSUM_SEED);
sum.append(&sbd->flags_, MD_BLOCK_SIZE - sizeof(uint32_t)); sum.append(&sbd->flags_, MD_BLOCK_SIZE - sizeof(uint32_t));
if (sum.get_sum() != to_cpu<uint32_t>(sbd->csum_)) if (sum.get_sum() != to_cpu<uint32_t>(sbd->csum_)) {
throw checksum_error("bad checksum in superblock"); ostringstream out;
out << "bad checksum in superblock, wanted " << sum.get_sum();
throw checksum_error(out.str());
}
} }
virtual void prepare(void *raw, block_address location) const { virtual void prepare(void *raw, block_address location) const {