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zero op (tho inactive)

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git-svn-id: https://ceph.svn.sf.net/svnroot/ceph@942 29311d96-e01e-0410-9327-a35deaab8ce9
This commit is contained in:
sageweil 2006-10-20 21:43:07 +00:00
parent 46b4eabebf
commit 40efd8ccc7
1 changed files with 27 additions and 0 deletions
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27
ceph/osd/OSD.cc
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@ -3197,6 +3197,33 @@ void OSD::prepare_op_transaction(ObjectStore::Transaction& t,
}
break;
case OSD_OP_ZERO:
{
assert(0); // are you sure this is what you want?
// zero, remove, or truncate?
struct stat st;
int r = store->stat(oid, &st);
if (r >= 0) {
if (op->get_offset() + op->get_length() >= st.st_size) {
if (op->get_offset())
t.truncate(oid, op->get_length() + op->get_offset());
else
t.remove(oid);
} else {
// zero. the dumb way. FIXME.
bufferptr bp(op->get_length());
bp.zero();
bufferlist bl;
bl.push_back(bp);
t.write(oid, op->get_offset(), op->get_length(), bl);
}
} else {
// noop?
dout(10) << "apply_transaction zero on " << oid << ", but dne? stat returns " << r << endl;
}
}
break;
case OSD_OP_TRUNCATE:
{ // truncate
//r = store->truncate(oid, op->get_offset());