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.
580 lines
21 KiB
C++
580 lines
21 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_primary.h"
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void osd_t::autosync()
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{
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// FIXME Autosync based on the number of unstable writes to prevent
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// "journal_sector_buffer_count is too low for this batch" errors
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if (immediate_commit != IMMEDIATE_ALL && !autosync_op)
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{
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autosync_op = new osd_op_t();
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autosync_op->op_type = OSD_OP_IN;
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autosync_op->req = (osd_any_op_t){
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.sync = {
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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_SYNC,
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},
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},
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};
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autosync_op->callback = [this](osd_op_t *op)
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{
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if (op->reply.hdr.retval < 0)
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{
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printf("Warning: automatic sync resulted in an error: %ld (%s)\n", -op->reply.hdr.retval, strerror(-op->reply.hdr.retval));
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}
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delete autosync_op;
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autosync_op = NULL;
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};
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exec_op(autosync_op);
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}
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}
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void osd_t::finish_op(osd_op_t *cur_op, int retval)
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{
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inflight_ops--;
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if (cur_op->op_data)
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{
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if (cur_op->op_data->pg_num > 0)
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{
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auto & pg = pgs[{ .pool_id = INODE_POOL(cur_op->op_data->oid.inode), .pg_num = cur_op->op_data->pg_num }];
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pg.inflight--;
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assert(pg.inflight >= 0);
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if ((pg.state & PG_STOPPING) && pg.inflight == 0 && !pg.flush_batch)
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{
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finish_stop_pg(pg);
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}
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}
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assert(!cur_op->op_data->subops);
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assert(!cur_op->op_data->unstable_write_osds);
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assert(!cur_op->op_data->unstable_writes);
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assert(!cur_op->op_data->dirty_pgs);
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free(cur_op->op_data);
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cur_op->op_data = NULL;
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}
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if (!cur_op->peer_fd)
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{
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// Copy lambda to be unaffected by `delete op`
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std::function<void(osd_op_t*)>(cur_op->callback)(cur_op);
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}
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else
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{
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// FIXME add separate magic number
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auto cl_it = c_cli.clients.find(cur_op->peer_fd);
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if (cl_it != c_cli.clients.end())
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{
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cur_op->reply.hdr.magic = SECONDARY_OSD_REPLY_MAGIC;
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cur_op->reply.hdr.id = cur_op->req.hdr.id;
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cur_op->reply.hdr.opcode = cur_op->req.hdr.opcode;
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cur_op->reply.hdr.retval = retval;
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c_cli.outbox_push(cur_op);
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}
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else
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{
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delete cur_op;
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}
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}
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}
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void osd_t::submit_primary_subops(int submit_type, uint64_t op_version, int pg_size, const uint64_t* osd_set, osd_op_t *cur_op)
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{
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bool wr = submit_type == SUBMIT_WRITE;
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osd_primary_op_data_t *op_data = cur_op->op_data;
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osd_rmw_stripe_t *stripes = op_data->stripes;
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bool rep = op_data->scheme == POOL_SCHEME_REPLICATED;
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// Allocate subops
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int n_subops = 0, zero_read = -1;
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for (int role = 0; role < pg_size; role++)
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{
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if (osd_set[role] == this->osd_num || osd_set[role] != 0 && zero_read == -1)
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{
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zero_read = role;
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}
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if (osd_set[role] != 0 && (wr || !rep && stripes[role].read_end != 0))
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{
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n_subops++;
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}
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}
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if (!n_subops && (submit_type == SUBMIT_RMW_READ || rep))
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{
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n_subops = 1;
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}
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else
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{
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zero_read = -1;
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}
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osd_op_t *subops = new osd_op_t[n_subops];
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op_data->fact_ver = 0;
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op_data->done = op_data->errors = 0;
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op_data->n_subops = n_subops;
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op_data->subops = subops;
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int i = 0;
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for (int role = 0; role < pg_size; role++)
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{
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// We always submit zero-length writes to all replicas, even if the stripe is not modified
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if (!(wr || !rep && stripes[role].read_end != 0 || zero_read == role))
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{
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continue;
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}
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osd_num_t role_osd_num = osd_set[role];
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if (role_osd_num != 0)
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{
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int stripe_num = rep ? 0 : role;
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if (role_osd_num == this->osd_num)
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{
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clock_gettime(CLOCK_REALTIME, &subops[i].tv_begin);
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subops[i].op_type = (uint64_t)cur_op;
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subops[i].bs_op = new blockstore_op_t({
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.opcode = (uint64_t)(wr ? (rep ? BS_OP_WRITE_STABLE : BS_OP_WRITE) : BS_OP_READ),
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.callback = [subop = &subops[i], this](blockstore_op_t *bs_subop)
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{
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handle_primary_bs_subop(subop);
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},
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.oid = {
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.inode = op_data->oid.inode,
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.stripe = op_data->oid.stripe | stripe_num,
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},
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.version = op_version,
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.offset = wr ? stripes[stripe_num].write_start : stripes[stripe_num].read_start,
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.len = wr ? stripes[stripe_num].write_end - stripes[stripe_num].write_start : stripes[stripe_num].read_end - stripes[stripe_num].read_start,
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.buf = wr ? stripes[stripe_num].write_buf : stripes[stripe_num].read_buf,
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});
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#ifdef OSD_DEBUG
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printf(
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"Submit %s to local: %lx:%lx v%lu %u-%u\n", wr ? "write" : "read",
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op_data->oid.inode, op_data->oid.stripe | stripe_num, op_version,
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subops[i].bs_op->offset, subops[i].bs_op->len
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);
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#endif
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bs->enqueue_op(subops[i].bs_op);
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}
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else
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{
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subops[i].op_type = OSD_OP_OUT;
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subops[i].peer_fd = c_cli.osd_peer_fds.at(role_osd_num);
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subops[i].req.sec_rw = {
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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)(wr ? (rep ? OSD_OP_SEC_WRITE_STABLE : OSD_OP_SEC_WRITE) : OSD_OP_SEC_READ),
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},
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.oid = {
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.inode = op_data->oid.inode,
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.stripe = op_data->oid.stripe | stripe_num,
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},
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.version = op_version,
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.offset = wr ? stripes[stripe_num].write_start : stripes[stripe_num].read_start,
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.len = wr ? stripes[stripe_num].write_end - stripes[stripe_num].write_start : stripes[stripe_num].read_end - stripes[stripe_num].read_start,
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};
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#ifdef OSD_DEBUG
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printf(
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"Submit %s to osd %lu: %lx:%lx v%lu %u-%u\n", wr ? "write" : "read", role_osd_num,
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op_data->oid.inode, op_data->oid.stripe | stripe_num, op_version,
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subops[i].req.sec_rw.offset, subops[i].req.sec_rw.len
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);
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#endif
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if (wr)
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{
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if (stripes[stripe_num].write_end > stripes[stripe_num].write_start)
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{
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subops[i].iov.push_back(stripes[stripe_num].write_buf, stripes[stripe_num].write_end - stripes[stripe_num].write_start);
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}
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}
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else
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{
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if (stripes[stripe_num].read_end > stripes[stripe_num].read_start)
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{
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subops[i].iov.push_back(stripes[stripe_num].read_buf, stripes[stripe_num].read_end - stripes[stripe_num].read_start);
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}
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}
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subops[i].callback = [cur_op, this](osd_op_t *subop)
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{
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int fail_fd = subop->req.hdr.opcode == OSD_OP_SEC_WRITE &&
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subop->reply.hdr.retval != subop->req.sec_rw.len ? subop->peer_fd : -1;
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handle_primary_subop(subop, cur_op);
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if (fail_fd >= 0)
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{
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// write operation failed, drop the connection
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c_cli.stop_client(fail_fd);
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}
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};
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c_cli.outbox_push(&subops[i]);
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}
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i++;
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}
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}
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}
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static uint64_t bs_op_to_osd_op[] = {
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0,
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OSD_OP_SEC_READ, // BS_OP_READ = 1
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OSD_OP_SEC_WRITE, // BS_OP_WRITE = 2
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OSD_OP_SEC_WRITE_STABLE, // BS_OP_WRITE_STABLE = 3
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OSD_OP_SEC_SYNC, // BS_OP_SYNC = 4
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OSD_OP_SEC_STABILIZE, // BS_OP_STABLE = 5
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OSD_OP_SEC_DELETE, // BS_OP_DELETE = 6
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OSD_OP_SEC_LIST, // BS_OP_LIST = 7
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OSD_OP_SEC_ROLLBACK, // BS_OP_ROLLBACK = 8
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OSD_OP_TEST_SYNC_STAB_ALL, // BS_OP_SYNC_STAB_ALL = 9
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};
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void osd_t::handle_primary_bs_subop(osd_op_t *subop)
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{
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osd_op_t *cur_op = (osd_op_t*)subop->op_type;
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blockstore_op_t *bs_op = subop->bs_op;
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int expected = bs_op->opcode == BS_OP_READ || bs_op->opcode == BS_OP_WRITE
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|| bs_op->opcode == BS_OP_WRITE_STABLE ? bs_op->len : 0;
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if (bs_op->retval != expected && bs_op->opcode != BS_OP_READ)
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{
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// die
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throw std::runtime_error(
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"local blockstore modification failed (opcode = "+std::to_string(bs_op->opcode)+
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" retval = "+std::to_string(bs_op->retval)+")"
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);
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}
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add_bs_subop_stats(subop);
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subop->req.hdr.opcode = bs_op_to_osd_op[bs_op->opcode];
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subop->reply.hdr.retval = bs_op->retval;
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if (bs_op->opcode == BS_OP_READ || bs_op->opcode == BS_OP_WRITE || bs_op->opcode == BS_OP_WRITE_STABLE)
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{
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subop->req.sec_rw.len = bs_op->len;
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subop->reply.sec_rw.version = bs_op->version;
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}
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delete bs_op;
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subop->bs_op = NULL;
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handle_primary_subop(subop, cur_op);
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}
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void osd_t::add_bs_subop_stats(osd_op_t *subop)
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{
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// Include local blockstore ops in statistics
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uint64_t opcode = bs_op_to_osd_op[subop->bs_op->opcode];
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timespec tv_end;
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clock_gettime(CLOCK_REALTIME, &tv_end);
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c_cli.stats.op_stat_count[opcode]++;
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if (!c_cli.stats.op_stat_count[opcode])
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{
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c_cli.stats.op_stat_count[opcode] = 1;
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c_cli.stats.op_stat_sum[opcode] = 0;
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c_cli.stats.op_stat_bytes[opcode] = 0;
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}
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c_cli.stats.op_stat_sum[opcode] += (
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(tv_end.tv_sec - subop->tv_begin.tv_sec)*1000000 +
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(tv_end.tv_nsec - subop->tv_begin.tv_nsec)/1000
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);
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if (opcode == OSD_OP_SEC_READ || opcode == OSD_OP_SEC_WRITE)
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{
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c_cli.stats.op_stat_bytes[opcode] += subop->bs_op->len;
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}
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}
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void osd_t::handle_primary_subop(osd_op_t *subop, osd_op_t *cur_op)
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{
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uint64_t opcode = subop->req.hdr.opcode;
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int retval = subop->reply.hdr.retval;
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int expected = opcode == OSD_OP_SEC_READ || opcode == OSD_OP_SEC_WRITE
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|| opcode == OSD_OP_SEC_WRITE_STABLE ? subop->req.sec_rw.len : 0;
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osd_primary_op_data_t *op_data = cur_op->op_data;
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if (retval != expected)
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{
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printf("%s subop failed: retval = %d (expected %d)\n", osd_op_names[opcode], retval, expected);
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if (retval == -EPIPE)
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{
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op_data->epipe++;
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}
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op_data->errors++;
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}
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else
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{
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op_data->done++;
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if (opcode == OSD_OP_SEC_READ || opcode == OSD_OP_SEC_WRITE || opcode == OSD_OP_SEC_WRITE_STABLE)
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{
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uint64_t version = subop->reply.sec_rw.version;
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#ifdef OSD_DEBUG
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uint64_t peer_osd = c_cli.clients.find(subop->peer_fd) != c_cli.clients.end()
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? c_cli.clients[subop->peer_fd]->osd_num : osd_num;
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printf("subop %lu from osd %lu: version = %lu\n", opcode, peer_osd, version);
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#endif
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if (op_data->fact_ver != 0 && op_data->fact_ver != version)
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{
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throw std::runtime_error(
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"different fact_versions returned from "+std::string(osd_op_names[opcode])+
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" subops: "+std::to_string(version)+" vs "+std::to_string(op_data->fact_ver)
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);
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}
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op_data->fact_ver = version;
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}
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}
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if ((op_data->errors + op_data->done) >= op_data->n_subops)
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{
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delete[] op_data->subops;
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op_data->subops = NULL;
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op_data->st++;
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if (cur_op->req.hdr.opcode == OSD_OP_READ)
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{
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continue_primary_read(cur_op);
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}
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else if (cur_op->req.hdr.opcode == OSD_OP_WRITE)
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{
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continue_primary_write(cur_op);
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}
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else if (cur_op->req.hdr.opcode == OSD_OP_SYNC)
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{
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continue_primary_sync(cur_op);
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}
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else if (cur_op->req.hdr.opcode == OSD_OP_DELETE)
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{
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continue_primary_del(cur_op);
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}
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else
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{
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throw std::runtime_error("BUG: unknown opcode");
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}
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}
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}
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void osd_t::cancel_primary_write(osd_op_t *cur_op)
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{
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if (cur_op->op_data && cur_op->op_data->subops)
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{
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// Primary-write operation is waiting for subops, subops
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// are sent to peer OSDs, so we can't just throw them away.
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// Mark them with an extra EPIPE.
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cur_op->op_data->errors++;
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cur_op->op_data->epipe++;
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cur_op->op_data->done--; // Caution: `done` must be signed because may become -1 here
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}
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else
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{
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finish_op(cur_op, -EPIPE);
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}
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}
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static bool contains_osd(osd_num_t *osd_set, uint64_t size, osd_num_t osd_num)
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{
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for (uint64_t i = 0; i < size; i++)
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{
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if (osd_set[i] == osd_num)
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{
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return true;
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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_primary_del_subops(osd_op_t *cur_op, osd_num_t *cur_set, uint64_t set_size, pg_osd_set_t & loc_set)
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{
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osd_primary_op_data_t *op_data = cur_op->op_data;
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bool rep = op_data->scheme == POOL_SCHEME_REPLICATED;
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int extra_chunks = 0;
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// ordered comparison for EC/XOR, unordered for replicated pools
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for (auto & chunk: loc_set)
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{
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if (!cur_set || (rep ? !contains_osd(cur_set, set_size, chunk.osd_num) : chunk.osd_num != cur_set[chunk.role]))
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{
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extra_chunks++;
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}
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}
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op_data->n_subops = extra_chunks;
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op_data->done = op_data->errors = 0;
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if (!extra_chunks)
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{
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return;
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}
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osd_op_t *subops = new osd_op_t[extra_chunks];
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op_data->subops = subops;
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int i = 0;
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for (auto & chunk: loc_set)
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{
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if (!cur_set || (rep ? !contains_osd(cur_set, set_size, chunk.osd_num) : chunk.osd_num != cur_set[chunk.role]))
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{
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int stripe_num = op_data->scheme == POOL_SCHEME_REPLICATED ? 0 : chunk.role;
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if (chunk.osd_num == this->osd_num)
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{
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clock_gettime(CLOCK_REALTIME, &subops[i].tv_begin);
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subops[i].op_type = (uint64_t)cur_op;
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subops[i].bs_op = new blockstore_op_t({
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.opcode = BS_OP_DELETE,
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.callback = [subop = &subops[i], this](blockstore_op_t *bs_subop)
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{
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handle_primary_bs_subop(subop);
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},
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.oid = {
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.inode = op_data->oid.inode,
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.stripe = op_data->oid.stripe | stripe_num,
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},
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// Same version as write
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.version = op_data->fact_ver,
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});
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bs->enqueue_op(subops[i].bs_op);
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}
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else
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{
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subops[i].op_type = OSD_OP_OUT;
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subops[i].peer_fd = c_cli.osd_peer_fds.at(chunk.osd_num);
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subops[i].req.sec_del = {
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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 = OSD_OP_SEC_DELETE,
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},
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.oid = {
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.inode = op_data->oid.inode,
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.stripe = op_data->oid.stripe | stripe_num,
|
|
},
|
|
// Same version as write
|
|
.version = op_data->fact_ver,
|
|
};
|
|
subops[i].callback = [cur_op, this](osd_op_t *subop)
|
|
{
|
|
int fail_fd = subop->reply.hdr.retval != 0 ? subop->peer_fd : -1;
|
|
handle_primary_subop(subop, cur_op);
|
|
if (fail_fd >= 0)
|
|
{
|
|
// delete operation failed, drop the connection
|
|
c_cli.stop_client(fail_fd);
|
|
}
|
|
};
|
|
c_cli.outbox_push(&subops[i]);
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
|
|
void osd_t::submit_primary_sync_subops(osd_op_t *cur_op)
|
|
{
|
|
osd_primary_op_data_t *op_data = cur_op->op_data;
|
|
int n_osds = op_data->dirty_osd_count;
|
|
osd_op_t *subops = new osd_op_t[n_osds];
|
|
op_data->done = op_data->errors = 0;
|
|
op_data->n_subops = n_osds;
|
|
op_data->subops = subops;
|
|
for (int i = 0; i < n_osds; i++)
|
|
{
|
|
osd_num_t sync_osd = op_data->dirty_osds[i];
|
|
if (sync_osd == this->osd_num)
|
|
{
|
|
clock_gettime(CLOCK_REALTIME, &subops[i].tv_begin);
|
|
subops[i].op_type = (uint64_t)cur_op;
|
|
subops[i].bs_op = new blockstore_op_t({
|
|
.opcode = BS_OP_SYNC,
|
|
.callback = [subop = &subops[i], this](blockstore_op_t *bs_subop)
|
|
{
|
|
handle_primary_bs_subop(subop);
|
|
},
|
|
});
|
|
bs->enqueue_op(subops[i].bs_op);
|
|
}
|
|
else
|
|
{
|
|
subops[i].op_type = OSD_OP_OUT;
|
|
subops[i].peer_fd = c_cli.osd_peer_fds.at(sync_osd);
|
|
subops[i].req.sec_sync = {
|
|
.header = {
|
|
.magic = SECONDARY_OSD_OP_MAGIC,
|
|
.id = c_cli.next_subop_id++,
|
|
.opcode = OSD_OP_SEC_SYNC,
|
|
},
|
|
};
|
|
subops[i].callback = [cur_op, this](osd_op_t *subop)
|
|
{
|
|
int fail_fd = subop->reply.hdr.retval != 0 ? subop->peer_fd : -1;
|
|
handle_primary_subop(subop, cur_op);
|
|
if (fail_fd >= 0)
|
|
{
|
|
// sync operation failed, drop the connection
|
|
c_cli.stop_client(fail_fd);
|
|
}
|
|
};
|
|
c_cli.outbox_push(&subops[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
void osd_t::submit_primary_stab_subops(osd_op_t *cur_op)
|
|
{
|
|
osd_primary_op_data_t *op_data = cur_op->op_data;
|
|
int n_osds = op_data->unstable_write_osds->size();
|
|
osd_op_t *subops = new osd_op_t[n_osds];
|
|
op_data->done = op_data->errors = 0;
|
|
op_data->n_subops = n_osds;
|
|
op_data->subops = subops;
|
|
for (int i = 0; i < n_osds; i++)
|
|
{
|
|
auto & stab_osd = (*(op_data->unstable_write_osds))[i];
|
|
if (stab_osd.osd_num == this->osd_num)
|
|
{
|
|
clock_gettime(CLOCK_REALTIME, &subops[i].tv_begin);
|
|
subops[i].op_type = (uint64_t)cur_op;
|
|
subops[i].bs_op = new blockstore_op_t((blockstore_op_t){
|
|
.opcode = BS_OP_STABLE,
|
|
.callback = [subop = &subops[i], this](blockstore_op_t *bs_subop)
|
|
{
|
|
handle_primary_bs_subop(subop);
|
|
},
|
|
.len = (uint32_t)stab_osd.len,
|
|
.buf = (void*)(op_data->unstable_writes + stab_osd.start),
|
|
});
|
|
bs->enqueue_op(subops[i].bs_op);
|
|
}
|
|
else
|
|
{
|
|
subops[i].op_type = OSD_OP_OUT;
|
|
subops[i].peer_fd = c_cli.osd_peer_fds.at(stab_osd.osd_num);
|
|
subops[i].req.sec_stab = {
|
|
.header = {
|
|
.magic = SECONDARY_OSD_OP_MAGIC,
|
|
.id = c_cli.next_subop_id++,
|
|
.opcode = OSD_OP_SEC_STABILIZE,
|
|
},
|
|
.len = (uint64_t)(stab_osd.len * sizeof(obj_ver_id)),
|
|
};
|
|
subops[i].iov.push_back(op_data->unstable_writes + stab_osd.start, stab_osd.len * sizeof(obj_ver_id));
|
|
subops[i].callback = [cur_op, this](osd_op_t *subop)
|
|
{
|
|
int fail_fd = subop->reply.hdr.retval != 0 ? subop->peer_fd : -1;
|
|
handle_primary_subop(subop, cur_op);
|
|
if (fail_fd >= 0)
|
|
{
|
|
// sync operation failed, drop the connection
|
|
c_cli.stop_client(fail_fd);
|
|
}
|
|
};
|
|
c_cli.outbox_push(&subops[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
void osd_t::pg_cancel_write_queue(pg_t & pg, osd_op_t *first_op, object_id oid, int retval)
|
|
{
|
|
auto st_it = pg.write_queue.find(oid), it = st_it;
|
|
if (it == pg.write_queue.end() || it->second != first_op)
|
|
{
|
|
// Write queue doesn't match the first operation.
|
|
// first_op is a leftover operation from the previous peering of the same PG.
|
|
finish_op(first_op, retval);
|
|
return;
|
|
}
|
|
std::vector<osd_op_t*> cancel_ops;
|
|
while (it != pg.write_queue.end())
|
|
{
|
|
cancel_ops.push_back(it->second);
|
|
it++;
|
|
}
|
|
if (st_it != it)
|
|
{
|
|
// First erase them and then run finish_op() for the sake of reenterability
|
|
// Calling finish_op() on a live iterator previously triggered a bug where some
|
|
// of the OSDs were looping infinitely if you stopped all of them with kill -INT during recovery
|
|
pg.write_queue.erase(st_it, it);
|
|
for (auto op: cancel_ops)
|
|
{
|
|
finish_op(op, retval);
|
|
}
|
|
}
|
|
}
|