private void notifyNamespace(PnfsId pnfsid, FileAttributes fileAttributes)
throws InterruptedException {
while (true) {
try {
pnfs.fileFlushed(pnfsid, fileAttributes);
break;
} catch (CacheException e) {
if (e.getRc() == CacheException.FILE_NOT_FOUND
|| e.getRc() == CacheException.NOT_IN_TRASH) {
/* In case the file was deleted, we are presented
* with the problem that the file is now on tape,
* however the location has not been registered
* centrally. Hence the copy on tape will not be
* removed by the HSM cleaner. The sensible thing
* seems to be to remove the file from tape here.
* For now we ignore this issue (REVISIT).
*/
break;
}
/* The message to the PnfsManager failed. There are several
* possible reasons for this; we may have lost the
* connection to the PnfsManager; the PnfsManager may have
* lost its connection to the namespace or otherwise be in
* trouble; bugs; etc.
*
* We keep retrying until we succeed. This will effectively
* block this thread from flushing any other files, which
* seems sensible when we have trouble talking to the
* PnfsManager. If the pool crashes or gets restarted while
* waiting here, we will end up flushing the file again. We
* assume that the nearline storage is able to eliminate the
* duplicate; or at least tolerate the duplicate (given that
* this situation should be rare, we can live with a little
* bit of wasted tape).
*/
LOGGER.error(
"Error notifying pnfsmanager about a flushed file: {} ({})",
e.getMessage(),
e.getRc());
}
TimeUnit.MINUTES.sleep(2);
}
}
public void fail(T msg, Exception e) {
if (e instanceof CacheException) {
CacheException ce = (CacheException) e;
fail(msg, ce.getRc(), ce.getMessage());
} else if (e instanceof IllegalArgumentException) {
fail(msg, CacheException.INVALID_ARGS, e.getMessage());
} else {
fail(msg, CacheException.UNEXPECTED_SYSTEM_EXCEPTION, e);
}
}
/**
* ask pool manager for a file
*
* <p>On successful reply from pool manager corresponding O request will be sent to the pool to
* start a NFS mover.
*
* @throws ChimeraNFSException in case of NFS friendly errors ( like ACCESS )
* @throws IOException in case of any other errors
*/
@Override
public Layout layoutGet(CompoundContext context, Inode nfsInode, int ioMode, stateid4 stateid)
throws IOException {
FsInode inode = _fileFileSystemProvider.inodeFromBytes(nfsInode.getFileId());
CDC cdc = CDC.reset(_cellName, _domainName);
try {
NDC.push(inode.toString());
NDC.push(context.getRpcCall().getTransport().getRemoteSocketAddress().toString());
deviceid4 deviceid;
if (inode.type() != FsInodeType.INODE || inode.getLevel() != 0) {
/*
* all non regular files ( AKA pnfs dot files ) provided by door itself.
*/
deviceid = MDS_ID;
} else {
final InetSocketAddress remote =
context.getRpcCall().getTransport().getRemoteSocketAddress();
final PnfsId pnfsId = new PnfsId(inode.toString());
final NFS4ProtocolInfo protocolInfo =
new NFS4ProtocolInfo(remote, new org.dcache.chimera.nfs.v4.xdr.stateid4(stateid));
Transfer.initSession();
NfsTransfer transfer = _ioMessages.get(stateid);
if (transfer == null) {
transfer =
new NfsTransfer(_pnfsHandler, context.getRpcCall().getCredential().getSubject());
transfer.setProtocolInfo(protocolInfo);
transfer.setCellName(this.getCellName());
transfer.setDomainName(this.getCellDomainName());
transfer.setBillingStub(_billingStub);
transfer.setPoolStub(_poolManagerStub);
transfer.setPoolManagerStub(_poolManagerStub);
transfer.setPnfsId(pnfsId);
transfer.setClientAddress(remote);
transfer.readNameSpaceEntry();
_ioMessages.put(stateid, transfer);
PoolDS ds = getPool(transfer, ioMode);
deviceid = ds.getDeviceId();
} else {
PoolDS ds = transfer.waitForRedirect(NFS_RETRY_PERIOD);
deviceid = ds.getDeviceId();
}
}
nfs_fh4 fh = new nfs_fh4(nfsInode.toNfsHandle());
// -1 is special value, which means entire file
layout4 layout = Layout.getLayoutSegment(deviceid, fh, ioMode, 0, nfs4_prot.NFS4_UINT64_MAX);
return new Layout(true, stateid, new layout4[] {layout});
} catch (FileInCacheException e) {
cleanStateAndKillMover(stateid);
throw new ChimeraNFSException(nfsstat.NFSERR_IO, e.getMessage());
} catch (CacheException e) {
cleanStateAndKillMover(stateid);
/*
* error 243: file is broken on tape.
* can't do a much. Tell it to client.
*/
int status =
e.getRc() == CacheException.BROKEN_ON_TAPE
? nfsstat.NFSERR_IO
: nfsstat.NFSERR_LAYOUTTRYLATER;
throw new ChimeraNFSException(status, e.getMessage());
} catch (InterruptedException e) {
cleanStateAndKillMover(stateid);
throw new ChimeraNFSException(nfsstat.NFSERR_LAYOUTTRYLATER, e.getMessage());
} finally {
cdc.close();
}
}