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osd: detect (some) misordered ondisk tmaps

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Detect a misordered ondisk tmap... if we are already decoding it.  We still
leave the trailing bits unchecked.

Signed-off-by: Sage Weil <sage@inktank.com>
This commit is contained in:
Sage Weil 2012-11-26 13:17:30 -08:00
parent bc77e528a0
commit 10b68b2e1a
1 changed files with 8 additions and 0 deletions
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8
src/osd/ReplicatedPG.cc
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@ -1759,10 +1759,18 @@ int ReplicatedPG::do_tmapup(OpContext *ctx, bufferlist::iterator& bp, OSDOp& osd
string nextkey, last_in_key;
bufferlist nextval;
bool have_next = false;
string last_disk_key;
if (!ip.end()) {
have_next = true;
::decode(nextkey, ip);
::decode(nextval, ip);
if (nextkey < last_disk_key) {
dout(0) << "tmapup warning: key '" << nextkey << "' < previous key '" << last_disk_key
<< "', falling back to an inefficient (unsorted) update" << dendl;
bp = orig_bp;
return do_tmapup_slow(ctx, bp, osd_op, newop.outdata);
}
last_disk_key = nextkey;
}
result = 0;
while (!bp.end() && !result) {