Vitaliy Filippov
4a2dcf7b6b
VNPL 1.1 is slightly reworded to make it clear that proprietary software interacting with Vitastor and providing some kind of service to end users isn't a "Proxy Program" if it's not specially designed to be used with Vitastor. For example, Windows OS running in a virtual machine stored in a Vitastor cluster clearly isn't.
310 lines
10 KiB
C++
310 lines
10 KiB
C++
// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 (see README.md for details)
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#include "osd.h"
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#define FLUSH_BATCH 512
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void osd_t::submit_pg_flush_ops(pg_t & pg)
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{
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pg_flush_batch_t *fb = new pg_flush_batch_t();
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pg.flush_batch = fb;
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auto it = pg.flush_actions.begin(), prev_it = pg.flush_actions.begin();
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bool first = true;
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while (it != pg.flush_actions.end())
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{
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if (!first && (it->first.oid.inode != prev_it->first.oid.inode ||
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(it->first.oid.stripe & ~STRIPE_MASK) != (prev_it->first.oid.stripe & ~STRIPE_MASK)) &&
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fb->rollback_lists[it->first.osd_num].size() >= FLUSH_BATCH ||
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fb->stable_lists[it->first.osd_num].size() >= FLUSH_BATCH)
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{
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// Stop only at the object boundary
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break;
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}
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it->second.submitted = true;
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if (it->second.rollback)
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{
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fb->flush_objects++;
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fb->rollback_lists[it->first.osd_num].push_back((obj_ver_id){
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.oid = it->first.oid,
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.version = it->second.rollback_to,
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});
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}
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if (it->second.make_stable)
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{
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fb->flush_objects++;
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fb->stable_lists[it->first.osd_num].push_back((obj_ver_id){
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.oid = it->first.oid,
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.version = it->second.stable_to,
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});
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}
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prev_it = it;
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first = false;
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it++;
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}
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for (auto & l: fb->rollback_lists)
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{
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if (l.second.size() > 0)
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{
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fb->flush_ops++;
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submit_flush_op(pg.pool_id, pg.pg_num, fb, true, l.first, l.second.size(), l.second.data());
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}
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}
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for (auto & l: fb->stable_lists)
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{
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if (l.second.size() > 0)
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{
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fb->flush_ops++;
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submit_flush_op(pg.pool_id, pg.pg_num, fb, false, l.first, l.second.size(), l.second.data());
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}
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}
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}
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void osd_t::handle_flush_op(bool rollback, pool_id_t pool_id, pg_num_t pg_num, pg_flush_batch_t *fb, osd_num_t peer_osd, int retval)
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{
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pool_pg_num_t pg_id = { .pool_id = pool_id, .pg_num = pg_num };
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if (pgs.find(pg_id) == pgs.end() || pgs[pg_id].flush_batch != fb)
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{
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// Throw the result away
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return;
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}
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if (retval != 0)
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{
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if (peer_osd == this->osd_num)
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{
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throw std::runtime_error(
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std::string(rollback
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? "Error while doing local rollback operation: "
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: "Error while doing local stabilize operation: "
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) + strerror(-retval)
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);
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}
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else
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{
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printf("Error while doing flush on OSD %lu: %d (%s)\n", osd_num, retval, strerror(-retval));
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auto fd_it = c_cli.osd_peer_fds.find(peer_osd);
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if (fd_it != c_cli.osd_peer_fds.end())
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{
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c_cli.stop_client(fd_it->second);
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}
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return;
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}
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}
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fb->flush_done++;
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if (fb->flush_done == fb->flush_ops)
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{
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// This flush batch is done
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std::vector<osd_op_t*> continue_ops;
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auto & pg = pgs[pg_id];
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auto it = pg.flush_actions.begin(), prev_it = it;
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auto erase_start = it;
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while (1)
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{
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if (it == pg.flush_actions.end() ||
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it->first.oid.inode != prev_it->first.oid.inode ||
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(it->first.oid.stripe & ~STRIPE_MASK) != (prev_it->first.oid.stripe & ~STRIPE_MASK))
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{
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pg.ver_override.erase((object_id){
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.inode = prev_it->first.oid.inode,
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.stripe = (prev_it->first.oid.stripe & ~STRIPE_MASK),
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});
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auto wr_it = pg.write_queue.find((object_id){
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.inode = prev_it->first.oid.inode,
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.stripe = (prev_it->first.oid.stripe & ~STRIPE_MASK),
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});
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if (wr_it != pg.write_queue.end())
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{
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continue_ops.push_back(wr_it->second);
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pg.write_queue.erase(wr_it);
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}
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}
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if ((it == pg.flush_actions.end() || !it->second.submitted) &&
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erase_start != it)
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{
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pg.flush_actions.erase(erase_start, it);
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}
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if (it == pg.flush_actions.end())
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{
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break;
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}
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prev_it = it;
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if (!it->second.submitted)
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{
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it++;
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erase_start = it;
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}
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else
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{
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it++;
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}
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}
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delete fb;
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pg.flush_batch = NULL;
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if (!pg.flush_actions.size())
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{
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pg.state = pg.state & ~PG_HAS_UNCLEAN;
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report_pg_state(pg);
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}
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for (osd_op_t *op: continue_ops)
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{
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continue_primary_write(op);
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}
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if (pg.inflight == 0 && (pg.state & PG_STOPPING))
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{
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finish_stop_pg(pg);
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}
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}
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}
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void osd_t::submit_flush_op(pool_id_t pool_id, pg_num_t pg_num, pg_flush_batch_t *fb, bool rollback, osd_num_t peer_osd, int count, obj_ver_id *data)
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{
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osd_op_t *op = new osd_op_t();
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// Copy buffer so it gets freed along with the operation
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op->buf = malloc_or_die(sizeof(obj_ver_id) * count);
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memcpy(op->buf, data, sizeof(obj_ver_id) * count);
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if (peer_osd == this->osd_num)
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{
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// local
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clock_gettime(CLOCK_REALTIME, &op->tv_begin);
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op->bs_op = new blockstore_op_t((blockstore_op_t){
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.opcode = (uint64_t)(rollback ? BS_OP_ROLLBACK : BS_OP_STABLE),
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.callback = [this, op, pool_id, pg_num, fb](blockstore_op_t *bs_op)
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{
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add_bs_subop_stats(op);
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handle_flush_op(bs_op->opcode == BS_OP_ROLLBACK, pool_id, pg_num, fb, this->osd_num, bs_op->retval);
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delete op->bs_op;
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op->bs_op = NULL;
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delete op;
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},
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.len = (uint32_t)count,
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.buf = op->buf,
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});
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bs->enqueue_op(op->bs_op);
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}
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else
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{
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// Peer
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int peer_fd = c_cli.osd_peer_fds[peer_osd];
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op->op_type = OSD_OP_OUT;
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op->iov.push_back(op->buf, count * sizeof(obj_ver_id));
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op->peer_fd = peer_fd;
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op->req = (osd_any_op_t){
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.sec_stab = {
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.header = {
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.magic = SECONDARY_OSD_OP_MAGIC,
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.id = c_cli.next_subop_id++,
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.opcode = (uint64_t)(rollback ? OSD_OP_SEC_ROLLBACK : OSD_OP_SEC_STABILIZE),
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},
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.len = count * sizeof(obj_ver_id),
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},
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};
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op->callback = [this, pool_id, pg_num, fb, peer_osd](osd_op_t *op)
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{
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handle_flush_op(op->req.hdr.opcode == OSD_OP_SEC_ROLLBACK, pool_id, pg_num, fb, peer_osd, op->reply.hdr.retval);
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delete op;
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};
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c_cli.outbox_push(op);
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}
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}
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bool osd_t::pick_next_recovery(osd_recovery_op_t &op)
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{
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for (auto pg_it = pgs.begin(); pg_it != pgs.end(); pg_it++)
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{
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if ((pg_it->second.state & (PG_ACTIVE | PG_HAS_DEGRADED)) == (PG_ACTIVE | PG_HAS_DEGRADED))
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{
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for (auto obj_it = pg_it->second.degraded_objects.begin(); obj_it != pg_it->second.degraded_objects.end(); obj_it++)
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{
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if (recovery_ops.find(obj_it->first) == recovery_ops.end())
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{
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op.degraded = true;
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op.oid = obj_it->first;
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return true;
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}
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}
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}
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}
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for (auto pg_it = pgs.begin(); pg_it != pgs.end(); pg_it++)
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{
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if ((pg_it->second.state & (PG_ACTIVE | PG_HAS_MISPLACED)) == (PG_ACTIVE | PG_HAS_MISPLACED))
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{
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for (auto obj_it = pg_it->second.misplaced_objects.begin(); obj_it != pg_it->second.misplaced_objects.end(); obj_it++)
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{
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if (recovery_ops.find(obj_it->first) == recovery_ops.end())
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{
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op.degraded = false;
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op.oid = obj_it->first;
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return true;
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}
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}
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}
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}
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return false;
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}
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void osd_t::submit_recovery_op(osd_recovery_op_t *op)
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{
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op->osd_op = new osd_op_t();
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op->osd_op->op_type = OSD_OP_OUT;
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op->osd_op->req = (osd_any_op_t){
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.rw = {
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.header = {
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.magic = SECONDARY_OSD_OP_MAGIC,
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.id = 1,
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.opcode = OSD_OP_WRITE,
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},
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.inode = op->oid.inode,
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.offset = op->oid.stripe,
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.len = 0,
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},
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};
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if (log_level > 2)
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{
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printf("Submitting recovery operation for %lx:%lx\n", op->oid.inode, op->oid.stripe);
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}
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op->osd_op->callback = [this, op](osd_op_t *osd_op)
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{
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// Don't sync the write, it will be synced by our regular sync coroutine
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if (osd_op->reply.hdr.retval < 0)
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{
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// Error recovering object
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if (osd_op->reply.hdr.retval == -EPIPE)
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{
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// PG is stopped or one of the OSDs is gone, error is harmless
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printf(
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"Recovery operation failed with object %lx:%lx (PG %u/%u)\n",
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op->oid.inode, op->oid.stripe, INODE_POOL(op->oid.inode),
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map_to_pg(op->oid, st_cli.pool_config.at(INODE_POOL(op->oid.inode)).pg_stripe_size)
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);
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}
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else
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{
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throw std::runtime_error("Failed to recover an object");
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}
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}
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// CAREFUL! op = &recovery_ops[op->oid]. Don't access op->* after recovery_ops.erase()
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op->osd_op = NULL;
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recovery_ops.erase(op->oid);
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delete osd_op;
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continue_recovery();
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};
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exec_op(op->osd_op);
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}
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// Just trigger write requests for degraded objects. They'll be recovered during writing
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bool osd_t::continue_recovery()
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{
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while (recovery_ops.size() < recovery_queue_depth)
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{
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osd_recovery_op_t op;
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if (pick_next_recovery(op))
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{
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recovery_ops[op.oid] = op;
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submit_recovery_op(&recovery_ops[op.oid]);
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}
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else
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return false;
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}
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return true;
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}
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