*
*/
-#include <unistd.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/file.h>
-
#include "HMSMRDevice.h"
-#include "include/intarith.h"
-#include "include/types.h"
-#include "include/compat.h"
-#include "include/scope_guard.h"
-#include "include/stringify.h"
-#include "common/blkdev.h"
-#include "common/errno.h"
-#if defined(__FreeBSD__)
-#include "bsm/audit_errno.h"
-#endif
-#include "common/debug.h"
-#include "common/numa.h"
-
-#include "kernel/io_uring.h"
-
extern "C" {
#include <libzbd/zbd.h>
}
+#include "common/debug.h"
+#include "common/errno.h"
#define dout_context cct
#define dout_subsys ceph_subsys_bdev
using namespace std;
-HMSMRDevice::HMSMRDevice(CephContext* cct, aio_callback_t cb, void *cbpriv, aio_callback_t d_cb, void *d_cbpriv)
- : BlockDevice(cct, cb, cbpriv),
- aio(false), dio(false),
- discard_callback(d_cb),
- discard_callback_priv(d_cbpriv),
- aio_stop(false),
- discard_started(false),
- discard_stop(false),
- aio_thread(this),
- discard_thread(this),
- injecting_crash(0)
+HMSMRDevice::HMSMRDevice(CephContext* cct,
+ aio_callback_t cb,
+ void *cbpriv,
+ aio_callback_t d_cb,
+ void *d_cbpriv)
+ : KernelDevice(cct, cb, cbpriv, d_cb, d_cbpriv)
{
- fd_directs.resize(WRITE_LIFE_MAX, -1);
- fd_buffereds.resize(WRITE_LIFE_MAX, -1);
-
- bool use_ioring = cct->_conf.get_val<bool>("bdev_ioring");
- unsigned int iodepth = cct->_conf->bdev_aio_max_queue_depth;
-
- if (use_ioring && ioring_queue_t::supported()) {
- bool use_ioring_hipri = cct->_conf.get_val<bool>("bdev_ioring_hipri");
- bool use_ioring_sqthread_poll = cct->_conf.get_val<bool>("bdev_ioring_sqthread_poll");
- io_queue = std::make_unique<ioring_queue_t>(iodepth, use_ioring_hipri, use_ioring_sqthread_poll);
- } else {
- static bool once;
- if (use_ioring && !once) {
- derr << "WARNING: io_uring API is not supported! Fallback to libaio!"
- << dendl;
- once = true;
- }
- io_queue = std::make_unique<aio_queue_t>(iodepth);
- }
}
bool HMSMRDevice::support(const std::string& path)
return zbd_device_is_zoned(path.c_str()) == 1;
}
-int HMSMRDevice::_lock()
+int HMSMRDevice::_post_open()
{
- dout(10) << __func__ << " " << fd_directs[WRITE_LIFE_NOT_SET] << dendl;
- int r = ::flock(fd_directs[WRITE_LIFE_NOT_SET], LOCK_EX | LOCK_NB);
- if (r < 0) {
- derr << __func__ << " flock failed on " << path << dendl;
- return -errno;
- }
- return 0;
-}
-
-bool HMSMRDevice::set_smr_params(const std::string& path) {
- dout(10) << __func__ << " opening " << path << dendl;
+ dout(10) << __func__ << dendl;
- int dev = zbd_open(path.c_str(), O_RDWR | O_DIRECT | O_LARGEFILE, nullptr);
- if (dev < 0) {
+ zbd_fd = zbd_open(path.c_str(), O_RDWR | O_DIRECT | O_LARGEFILE, nullptr);
+ int r;
+ if (zbd_fd < 0) {
+ r = errno;
derr << __func__ << " zbd_open failed on " << path << ": "
- << cpp_strerror(errno) << dendl;
- return false;
+ << cpp_strerror(r) << dendl;
+ return -r;
}
- auto close_dev = make_scope_guard([dev] { zbd_close(dev); });
unsigned int nr_zones = 0;
- if (zbd_report_nr_zones(dev, 0, 0, ZBD_RO_NOT_WP, &nr_zones) != 0) {
+ std::vector<zbd_zone> zones;
+ if (zbd_report_nr_zones(zbd_fd, 0, 0, ZBD_RO_NOT_WP, &nr_zones) != 0) {
+ r = -errno;
derr << __func__ << " zbd_report_nr_zones failed on " << path << ": "
- << cpp_strerror(errno) << dendl;
- return false;
+ << cpp_strerror(r) << dendl;
+ goto fail;
}
- std::vector<zbd_zone> zones(nr_zones);
- if (zbd_report_zones(dev, 0, 0, ZBD_RO_NOT_WP, zones.data(), &nr_zones) != 0) {
+ zones.resize(nr_zones);
+ if (zbd_report_zones(zbd_fd, 0, 0, ZBD_RO_NOT_WP, zones.data(), &nr_zones) != 0) {
+ r = -errno;
derr << __func__ << " zbd_report_zones failed on " << path << dendl;
- return false;
+ goto fail;
}
zone_size = zbd_zone_len(&zones[0]);
<< " and conventional region size to " << conventional_region_size
<< dendl;
- return true;
-}
-
-int HMSMRDevice::open(const string& p)
-{
- path = p;
- int r = 0, i = 0;
- dout(1) << __func__ << " path " << path << dendl;
-
- for (i = 0; i < WRITE_LIFE_MAX; i++) {
- int fd = ::open(path.c_str(), O_RDWR | O_DIRECT);
- if (fd < 0) {
- r = -errno;
- break;
- }
- fd_directs[i] = fd;
-
- fd = ::open(path.c_str(), O_RDWR | O_CLOEXEC);
- if (fd < 0) {
- r = -errno;
- break;
- }
- fd_buffereds[i] = fd;
- }
-
- if (i != WRITE_LIFE_MAX) {
- derr << __func__ << " open got: " << cpp_strerror(r) << dendl;
- goto out_fail;
- }
-
- if (!set_smr_params(p)) {
- derr << __func__ << " failed to set HM-SMR parameters" << dendl;
- goto out_fail;
- }
-
-#if defined(F_SET_FILE_RW_HINT)
- for (i = WRITE_LIFE_NONE; i < WRITE_LIFE_MAX; i++) {
- if (fcntl(fd_directs[i], F_SET_FILE_RW_HINT, &i) < 0) {
- r = -errno;
- break;
- }
- if (fcntl(fd_buffereds[i], F_SET_FILE_RW_HINT, &i) < 0) {
- r = -errno;
- break;
- }
- }
- if (i != WRITE_LIFE_MAX) {
- enable_wrt = false;
- dout(0) << "ioctl(F_SET_FILE_RW_HINT) on " << path << " failed: " << cpp_strerror(r) << dendl;
- }
-#endif
-
- dio = true;
- aio = cct->_conf->bdev_aio;
- if (!aio) {
- ceph_abort_msg("non-aio not supported");
- }
-
- // disable readahead as it will wreak havoc on our mix of
- // directio/aio and buffered io.
- r = posix_fadvise(fd_buffereds[WRITE_LIFE_NOT_SET], 0, 0, POSIX_FADV_RANDOM);
- if (r) {
- r = -r;
- derr << __func__ << " posix_fadvise got: " << cpp_strerror(r) << dendl;
- goto out_fail;
- }
-
- if (lock_exclusive) {
- r = _lock();
- if (r < 0) {
- derr << __func__ << " failed to lock " << path << ": " << cpp_strerror(r)
- << dendl;
- goto out_fail;
- }
- }
-
- struct stat st;
- r = ::fstat(fd_directs[WRITE_LIFE_NOT_SET], &st);
- if (r < 0) {
- r = -errno;
- derr << __func__ << " fstat got " << cpp_strerror(r) << dendl;
- goto out_fail;
- }
-
- // Operate as though the block size is 4 KB. The backing file
- // blksize doesn't strictly matter except that some file systems may
- // require a read/modify/write if we write something smaller than
- // it.
- block_size = cct->_conf->bdev_block_size;
- if (block_size != (unsigned)st.st_blksize) {
- dout(1) << __func__ << " backing device/file reports st_blksize "
- << st.st_blksize << ", using bdev_block_size "
- << block_size << " anyway" << dendl;
- }
-
-
- {
- BlkDev blkdev_direct(fd_directs[WRITE_LIFE_NOT_SET]);
- BlkDev blkdev_buffered(fd_buffereds[WRITE_LIFE_NOT_SET]);
-
- if (S_ISBLK(st.st_mode)) {
- int64_t s;
- r = blkdev_direct.get_size(&s);
- if (r < 0) {
- goto out_fail;
- }
- size = s;
- } else {
- size = st.st_size;
- }
-
- char partition[PATH_MAX], devname[PATH_MAX];
- if ((r = blkdev_buffered.partition(partition, PATH_MAX)) ||
- (r = blkdev_buffered.wholedisk(devname, PATH_MAX))) {
- derr << "unable to get device name for " << path << ": "
- << cpp_strerror(r) << dendl;
- rotational = true;
- } else {
- dout(20) << __func__ << " devname " << devname << dendl;
- rotational = blkdev_buffered.is_rotational();
- support_discard = blkdev_buffered.support_discard();
- this->devname = devname;
- }
- }
-
- r = _aio_start();
- if (r < 0) {
- goto out_fail;
- }
- _discard_start();
-
- // round size down to an even block
- size &= ~(block_size - 1);
-
- dout(1) << __func__
- << " size " << size
- << " (0x" << std::hex << size << std::dec << ", "
- << byte_u_t(size) << ")"
- << " block_size " << block_size
- << " (" << byte_u_t(block_size) << ")"
- << " " << (rotational ? "rotational" : "non-rotational")
- << " discard " << (support_discard ? "supported" : "not supported")
- << dendl;
return 0;
-out_fail:
- for (i = 0; i < WRITE_LIFE_MAX; i++) {
- if (fd_directs[i] >= 0) {
- VOID_TEMP_FAILURE_RETRY(::close(fd_directs[i]));
- fd_directs[i] = -1;
- } else {
- break;
- }
- if (fd_buffereds[i] >= 0) {
- VOID_TEMP_FAILURE_RETRY(::close(fd_buffereds[i]));
- fd_buffereds[i] = -1;
- } else {
- break;
- }
- }
+fail:
+ zbd_close(zbd_fd);
+ zbd_fd = -1;
return r;
}
-int HMSMRDevice::get_devices(std::set<std::string> *ls) const
-{
- if (devname.empty()) {
- return 0;
- }
- get_raw_devices(devname, ls);
- return 0;
-}
-
-void HMSMRDevice::close()
-{
- dout(1) << __func__ << dendl;
- _aio_stop();
- _discard_stop();
-
- for (int i = 0; i < WRITE_LIFE_MAX; i++) {
- assert(fd_directs[i] >= 0);
- VOID_TEMP_FAILURE_RETRY(::close(fd_directs[i]));
- fd_directs[i] = -1;
- assert(fd_buffereds[i] >= 0);
- VOID_TEMP_FAILURE_RETRY(::close(fd_buffereds[i]));
- fd_buffereds[i] = -1;
- }
- path.clear();
-}
-
-int HMSMRDevice::collect_metadata(const string& prefix, map<string,string> *pm) const
+void HMSMRDevice::_pre_close()
{
- (*pm)[prefix + "support_discard"] = stringify((int)(bool)support_discard);
- (*pm)[prefix + "rotational"] = stringify((int)(bool)rotational);
- (*pm)[prefix + "size"] = stringify(get_size());
- (*pm)[prefix + "block_size"] = stringify(get_block_size());
- (*pm)[prefix + "driver"] = "HMSMRDevice";
- if (rotational) {
- (*pm)[prefix + "type"] = "hdd";
- } else {
- (*pm)[prefix + "type"] = "ssd";
- }
-
- {
- string res_names;
- std::set<std::string> devnames;
- if (get_devices(&devnames) == 0) {
- for (auto& dev : devnames) {
- if (!res_names.empty()) {
- res_names += ",";
- }
- res_names += dev;
- }
- if (res_names.size()) {
- (*pm)[prefix + "devices"] = res_names;
- }
- }
- }
-
- struct stat st;
- int r = ::fstat(fd_buffereds[WRITE_LIFE_NOT_SET], &st);
- if (r < 0)
- return -errno;
- if (S_ISBLK(st.st_mode)) {
- (*pm)[prefix + "access_mode"] = "blk";
-
- char buffer[1024] = {0};
- BlkDev blkdev{fd_buffereds[WRITE_LIFE_NOT_SET]};
- if (r = blkdev.partition(buffer, sizeof(buffer)); r) {
- (*pm)[prefix + "partition_path"] = "unknown";
- } else {
- (*pm)[prefix + "partition_path"] = buffer;
- }
- buffer[0] = '\0';
- if (r = blkdev.partition(buffer, sizeof(buffer)); r) {
- (*pm)[prefix + "dev_node"] = "unknown";
- } else {
- (*pm)[prefix + "dev_node"] = buffer;
- }
- if (!r) {
- return 0;
- }
- buffer[0] = '\0';
- blkdev.model(buffer, sizeof(buffer));
- (*pm)[prefix + "model"] = buffer;
-
- buffer[0] = '\0';
- blkdev.dev(buffer, sizeof(buffer));
- (*pm)[prefix + "dev"] = buffer;
-
- // nvme exposes a serial number
- buffer[0] = '\0';
- blkdev.serial(buffer, sizeof(buffer));
- (*pm)[prefix + "serial"] = buffer;
-
- // numa
- int node;
- r = blkdev.get_numa_node(&node);
- if (r >= 0) {
- (*pm)[prefix + "numa_node"] = stringify(node);
- }
- } else {
- (*pm)[prefix + "access_mode"] = "file";
- (*pm)[prefix + "path"] = path;
+ if (zbd_fd >= 0) {
+ zbd_close(zbd_fd);
+ zbd_fd = -1;
}
- return 0;
}
void HMSMRDevice::reset_all_zones()
{
+ dout(10) << __func__ << dendl;
zbd_reset_zones(zbd_fd, conventional_region_size, 0);
}
-void HMSMRDevice::reset_zones(const std::set<uint64_t>& zones) {
+void HMSMRDevice::reset_zones(const std::set<uint64_t>& zones)
+{
+ dout(10) << __func__ << " 0x" << std::hex << zones << std::dec << dendl;
for (auto zone_num : zones) {
if (zbd_reset_zones(zbd_fd, zone_num * zone_size, zone_size) != 0) {
- derr << __func__ << " resetting zone failed for zone " << zone_num << dendl;
- }
- }
-}
-
-bool HMSMRDevice::get_thin_utilization(uint64_t *total, uint64_t *avail) const
-{
- return false;
-}
-
-int HMSMRDevice::choose_fd(bool buffered, int write_hint) const
-{
- assert(write_hint >= WRITE_LIFE_NOT_SET && write_hint < WRITE_LIFE_MAX);
- if (!enable_wrt)
- write_hint = WRITE_LIFE_NOT_SET;
- return buffered ? fd_buffereds[write_hint] : fd_directs[write_hint];
-}
-
-int HMSMRDevice::flush()
-{
- // protect flush with a mutex. note that we are not really protecting
- // data here. instead, we're ensuring that if any flush() caller
- // sees that io_since_flush is true, they block any racing callers
- // until the flush is observed. that allows racing threads to be
- // calling flush while still ensuring that *any* of them that got an
- // aio completion notification will not return before that aio is
- // stable on disk: whichever thread sees the flag first will block
- // followers until the aio is stable.
- std::lock_guard l(flush_mutex);
-
- bool expect = true;
- if (!io_since_flush.compare_exchange_strong(expect, false)) {
- dout(10) << __func__ << " no-op (no ios since last flush), flag is "
- << (int)io_since_flush.load() << dendl;
- return 0;
- }
-
- dout(10) << __func__ << " start" << dendl;
- if (cct->_conf->bdev_inject_crash) {
- ++injecting_crash;
- // sleep for a moment to give other threads a chance to submit or
- // wait on io that races with a flush.
- derr << __func__ << " injecting crash. first we sleep..." << dendl;
- sleep(cct->_conf->bdev_inject_crash_flush_delay);
- derr << __func__ << " and now we die" << dendl;
- cct->_log->flush();
- _exit(1);
- }
- utime_t start = ceph_clock_now();
- int r = ::fdatasync(fd_directs[WRITE_LIFE_NOT_SET]);
- utime_t end = ceph_clock_now();
- utime_t dur = end - start;
- if (r < 0) {
- r = -errno;
- derr << __func__ << " fdatasync got: " << cpp_strerror(r) << dendl;
- ceph_abort();
- }
- dout(5) << __func__ << " in " << dur << dendl;;
- return r;
-}
-
-int HMSMRDevice::_aio_start()
-{
- if (aio) {
- dout(10) << __func__ << dendl;
- int r = io_queue->init(fd_directs);
- if (r < 0) {
- if (r == -EAGAIN) {
- derr << __func__ << " io_setup(2) failed with EAGAIN; "
- << "try increasing /proc/sys/fs/aio-max-nr" << dendl;
- } else {
- derr << __func__ << " io_setup(2) failed: " << cpp_strerror(r) << dendl;
- }
- return r;
- }
- aio_thread.create("bstore_aio");
- }
- return 0;
-}
-
-void HMSMRDevice::_aio_stop()
-{
- if (aio) {
- dout(10) << __func__ << dendl;
- aio_stop = true;
- aio_thread.join();
- aio_stop = false;
- io_queue->shutdown();
- }
-}
-
-int HMSMRDevice::_discard_start()
-{
- discard_thread.create("bstore_discard");
- return 0;
-}
-
-void HMSMRDevice::_discard_stop()
-{
- dout(10) << __func__ << dendl;
- {
- std::unique_lock l(discard_lock);
- while (!discard_started) {
- discard_cond.wait(l);
+ derr << __func__ << " resetting zone failed for zone 0x" << std::hex
+ << zone_num << std::dec << dendl;
}
- discard_stop = true;
- discard_cond.notify_all();
- }
- discard_thread.join();
- {
- std::lock_guard l(discard_lock);
- discard_stop = false;
}
- dout(10) << __func__ << " stopped" << dendl;
-}
-
-void HMSMRDevice::discard_drain()
-{
- dout(10) << __func__ << dendl;
- std::unique_lock l(discard_lock);
- while (!discard_queued.empty() || discard_running) {
- discard_cond.wait(l);
- }
-}
-
-static bool is_expected_ioerr(const int r)
-{
- // https://lxr.missinglinkelectronics.com/linux+v4.15/block/blk-core.c#L135
- return (r == -EOPNOTSUPP || r == -ETIMEDOUT || r == -ENOSPC ||
- r == -ENOLINK || r == -EREMOTEIO || r == -EAGAIN || r == -EIO ||
- r == -ENODATA || r == -EILSEQ || r == -ENOMEM ||
-#if defined(__linux__)
- r == -EREMCHG || r == -EBADE
-#elif defined(__FreeBSD__)
- r == - BSM_ERRNO_EREMCHG || r == -BSM_ERRNO_EBADE
-#endif
- );
-}
-
-void HMSMRDevice::_aio_thread()
-{
- dout(10) << __func__ << " start" << dendl;
- int inject_crash_count = 0;
- while (!aio_stop) {
- dout(40) << __func__ << " polling" << dendl;
- int max = cct->_conf->bdev_aio_reap_max;
- aio_t *aio[max];
- int r = io_queue->get_next_completed(cct->_conf->bdev_aio_poll_ms,
- aio, max);
- if (r < 0) {
- derr << __func__ << " got " << cpp_strerror(r) << dendl;
- ceph_abort_msg("got unexpected error from io_getevents");
- }
- if (r > 0) {
- dout(30) << __func__ << " got " << r << " completed aios" << dendl;
- for (int i = 0; i < r; ++i) {
- IOContext *ioc = static_cast<IOContext*>(aio[i]->priv);
- _aio_log_finish(ioc, aio[i]->offset, aio[i]->length);
- if (aio[i]->queue_item.is_linked()) {
- std::lock_guard l(debug_queue_lock);
- debug_aio_unlink(*aio[i]);
- }
-
- // set flag indicating new ios have completed. we do this *before*
- // any completion or notifications so that any user flush() that
- // follows the observed io completion will include this io. Note
- // that an earlier, racing flush() could observe and clear this
- // flag, but that also ensures that the IO will be stable before the
- // later flush() occurs.
- io_since_flush.store(true);
-
- long r = aio[i]->get_return_value();
- if (r < 0) {
- derr << __func__ << " got r=" << r << " (" << cpp_strerror(r) << ")"
- << dendl;
- if (ioc->allow_eio && is_expected_ioerr(r)) {
- derr << __func__ << " translating the error to EIO for upper layer"
- << dendl;
- ioc->set_return_value(-EIO);
- } else {
- if (is_expected_ioerr(r)) {
- note_io_error_event(
- devname.c_str(),
- path.c_str(),
- r,
-#if defined(HAVE_POSIXAIO)
- aio[i]->aio.aiocb.aio_lio_opcode,
-#else
- aio[i]->iocb.aio_lio_opcode,
-#endif
- aio[i]->offset,
- aio[i]->length);
- ceph_abort_msg(
- "Unexpected IO error. "
- "This may suggest a hardware issue. "
- "Please check your kernel log!");
- }
- ceph_abort_msg(
- "Unexpected IO error. "
- "This may suggest HW issue. Please check your dmesg!");
- }
- } else if (aio[i]->length != (uint64_t)r) {
- derr << "aio to 0x" << std::hex << aio[i]->offset
- << "~" << aio[i]->length << std::dec
- << " but returned: " << r << dendl;
- ceph_abort_msg("unexpected aio return value: does not match length");
- }
-
- dout(10) << __func__ << " finished aio " << aio[i] << " r " << r
- << " ioc " << ioc
- << " with " << (ioc->num_running.load() - 1)
- << " aios left" << dendl;
-
- // NOTE: once num_running and we either call the callback or
- // call aio_wake we cannot touch ioc or aio[] as the caller
- // may free it.
- if (ioc->priv) {
- if (--ioc->num_running == 0) {
- aio_callback(aio_callback_priv, ioc->priv);
- }
- } else {
- ioc->try_aio_wake();
- }
- }
- }
- if (cct->_conf->bdev_debug_aio) {
- utime_t now = ceph_clock_now();
- std::lock_guard l(debug_queue_lock);
- if (debug_oldest) {
- if (debug_stall_since == utime_t()) {
- debug_stall_since = now;
- } else {
- if (cct->_conf->bdev_debug_aio_suicide_timeout) {
- utime_t cutoff = now;
- cutoff -= cct->_conf->bdev_debug_aio_suicide_timeout;
- if (debug_stall_since < cutoff) {
- derr << __func__ << " stalled aio " << debug_oldest
- << " since " << debug_stall_since << ", timeout is "
- << cct->_conf->bdev_debug_aio_suicide_timeout
- << "s, suicide" << dendl;
- ceph_abort_msg("stalled aio... buggy kernel or bad device?");
- }
- }
- }
- }
- }
- if (cct->_conf->bdev_inject_crash) {
- ++inject_crash_count;
- if (inject_crash_count * cct->_conf->bdev_aio_poll_ms / 1000 >
- cct->_conf->bdev_inject_crash + cct->_conf->bdev_inject_crash_flush_delay) {
- derr << __func__ << " bdev_inject_crash trigger from aio thread"
- << dendl;
- cct->_log->flush();
- _exit(1);
- }
- }
- }
- dout(10) << __func__ << " end" << dendl;
-}
-
-void HMSMRDevice::_discard_thread()
-{
- std::unique_lock l(discard_lock);
- ceph_assert(!discard_started);
- discard_started = true;
- discard_cond.notify_all();
- while (true) {
- ceph_assert(discard_finishing.empty());
- if (discard_queued.empty()) {
- if (discard_stop)
- break;
- dout(20) << __func__ << " sleep" << dendl;
- discard_cond.notify_all(); // for the thread trying to drain...
- discard_cond.wait(l);
- dout(20) << __func__ << " wake" << dendl;
- } else {
- discard_finishing.swap(discard_queued);
- discard_running = true;
- l.unlock();
- dout(20) << __func__ << " finishing" << dendl;
- for (auto p = discard_finishing.begin();p != discard_finishing.end(); ++p) {
- discard(p.get_start(), p.get_len());
- }
-
- discard_callback(discard_callback_priv, static_cast<void*>(&discard_finishing));
- discard_finishing.clear();
- l.lock();
- discard_running = false;
- }
- }
- dout(10) << __func__ << " finish" << dendl;
- discard_started = false;
-}
-
-int HMSMRDevice::queue_discard(interval_set<uint64_t> &to_release)
-{
- if (!support_discard)
- return -1;
-
- if (to_release.empty())
- return 0;
-
- std::lock_guard l(discard_lock);
- discard_queued.insert(to_release);
- discard_cond.notify_all();
- return 0;
-}
-
-void HMSMRDevice::_aio_log_start(
- IOContext *ioc,
- uint64_t offset,
- uint64_t length)
-{
- dout(20) << __func__ << " 0x" << std::hex << offset << "~" << length
- << std::dec << dendl;
- if (cct->_conf->bdev_debug_inflight_ios) {
- std::lock_guard l(debug_lock);
- if (debug_inflight.intersects(offset, length)) {
- derr << __func__ << " inflight overlap of 0x"
- << std::hex
- << offset << "~" << length << std::dec
- << " with " << debug_inflight << dendl;
- ceph_abort();
- }
- debug_inflight.insert(offset, length);
- }
-}
-
-void HMSMRDevice::debug_aio_link(aio_t& aio)
-{
- if (debug_queue.empty()) {
- debug_oldest = &aio;
- }
- debug_queue.push_back(aio);
-}
-
-void HMSMRDevice::debug_aio_unlink(aio_t& aio)
-{
- if (aio.queue_item.is_linked()) {
- debug_queue.erase(debug_queue.iterator_to(aio));
- if (debug_oldest == &aio) {
- auto age = cct->_conf->bdev_debug_aio_log_age;
- if (age && debug_stall_since != utime_t()) {
- utime_t cutoff = ceph_clock_now();
- cutoff -= age;
- if (debug_stall_since < cutoff) {
- derr << __func__ << " stalled aio " << debug_oldest
- << " since " << debug_stall_since << ", timeout is "
- << age
- << "s" << dendl;
- }
- }
-
- if (debug_queue.empty()) {
- debug_oldest = nullptr;
- } else {
- debug_oldest = &debug_queue.front();
- }
- debug_stall_since = utime_t();
- }
- }
-}
-
-void HMSMRDevice::_aio_log_finish(
- IOContext *ioc,
- uint64_t offset,
- uint64_t length)
-{
- dout(20) << __func__ << " " << aio << " 0x"
- << std::hex << offset << "~" << length << std::dec << dendl;
- if (cct->_conf->bdev_debug_inflight_ios) {
- std::lock_guard l(debug_lock);
- debug_inflight.erase(offset, length);
- }
-}
-
-void HMSMRDevice::aio_submit(IOContext *ioc)
-{
- dout(20) << __func__ << " ioc " << ioc
- << " pending " << ioc->num_pending.load()
- << " running " << ioc->num_running.load()
- << dendl;
-
- if (ioc->num_pending.load() == 0) {
- return;
- }
-
- // move these aside, and get our end iterator position now, as the
- // aios might complete as soon as they are submitted and queue more
- // wal aio's.
- list<aio_t>::iterator e = ioc->running_aios.begin();
- ioc->running_aios.splice(e, ioc->pending_aios);
-
- int pending = ioc->num_pending.load();
- ioc->num_running += pending;
- ioc->num_pending -= pending;
- ceph_assert(ioc->num_pending.load() == 0); // we should be only thread doing this
- ceph_assert(ioc->pending_aios.size() == 0);
-
- if (cct->_conf->bdev_debug_aio) {
- list<aio_t>::iterator p = ioc->running_aios.begin();
- while (p != e) {
- dout(30) << __func__ << " " << *p << dendl;
- std::lock_guard l(debug_queue_lock);
- debug_aio_link(*p++);
- }
- }
-
- void *priv = static_cast<void*>(ioc);
- int r, retries = 0;
- r = io_queue->submit_batch(ioc->running_aios.begin(), e,
- pending, priv, &retries);
-
- if (retries)
- derr << __func__ << " retries " << retries << dendl;
- if (r < 0) {
- derr << " aio submit got " << cpp_strerror(r) << dendl;
- ceph_assert(r == 0);
- }
-}
-
-int HMSMRDevice::_sync_write(uint64_t off, bufferlist &bl, bool buffered, int write_hint)
-{
- uint64_t len = bl.length();
- dout(5) << __func__ << " 0x" << std::hex << off << "~" << len
- << std::dec << (buffered ? " (buffered)" : " (direct)") << dendl;
- if (cct->_conf->bdev_inject_crash &&
- rand() % cct->_conf->bdev_inject_crash == 0) {
- derr << __func__ << " bdev_inject_crash: dropping io 0x" << std::hex
- << off << "~" << len << std::dec << dendl;
- ++injecting_crash;
- return 0;
- }
- vector<iovec> iov;
- bl.prepare_iov(&iov);
- int r = ::pwritev(choose_fd(buffered, write_hint),
- &iov[0], iov.size(), off);
-
- if (r < 0) {
- r = -errno;
- derr << __func__ << " pwritev error: " << cpp_strerror(r) << dendl;
- return r;
- }
-#ifdef HAVE_SYNC_FILE_RANGE
- if (buffered) {
- // initiate IO and wait till it completes
- r = ::sync_file_range(fd_buffereds[WRITE_LIFE_NOT_SET], off, len, SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER|SYNC_FILE_RANGE_WAIT_BEFORE);
- if (r < 0) {
- r = -errno;
- derr << __func__ << " sync_file_range error: " << cpp_strerror(r) << dendl;
- return r;
- }
- }
-#endif
-
- io_since_flush.store(true);
-
- return 0;
-}
-
-int HMSMRDevice::write(
- uint64_t off,
- bufferlist &bl,
- bool buffered,
- int write_hint)
-{
- uint64_t len = bl.length();
- dout(20) << __func__ << " 0x" << std::hex << off << "~" << len << std::dec
- << (buffered ? " (buffered)" : " (direct)")
- << dendl;
- ceph_assert(is_valid_io(off, len));
- if (cct->_conf->objectstore_blackhole) {
- lderr(cct) << __func__ << " objectstore_blackhole=true, throwing out IO"
- << dendl;
- return 0;
- }
-
- if ((!buffered || bl.get_num_buffers() >= IOV_MAX) &&
- bl.rebuild_aligned_size_and_memory(block_size, block_size, IOV_MAX)) {
- dout(20) << __func__ << " rebuilding buffer to be aligned" << dendl;
- }
- dout(40) << "data:\n";
- bl.hexdump(*_dout);
- *_dout << dendl;
-
- return _sync_write(off, bl, buffered, write_hint);
-}
-
-int HMSMRDevice::aio_write(
- uint64_t off,
- bufferlist &bl,
- IOContext *ioc,
- bool buffered,
- int write_hint)
-{
- uint64_t len = bl.length();
- dout(20) << __func__ << " 0x" << std::hex << off << "~" << len << std::dec
- << (buffered ? " (buffered)" : " (direct)")
- << dendl;
- ceph_assert(is_valid_io(off, len));
- if (cct->_conf->objectstore_blackhole) {
- lderr(cct) << __func__ << " objectstore_blackhole=true, throwing out IO"
- << dendl;
- return 0;
- }
-
- if ((!buffered || bl.get_num_buffers() >= IOV_MAX) &&
- bl.rebuild_aligned_size_and_memory(block_size, block_size, IOV_MAX)) {
- dout(20) << __func__ << " rebuilding buffer to be aligned" << dendl;
- }
- dout(40) << "data:\n";
- bl.hexdump(*_dout);
- *_dout << dendl;
-
- _aio_log_start(ioc, off, len);
-
-#ifdef HAVE_LIBAIO
- if (aio && dio && !buffered) {
- if (cct->_conf->bdev_inject_crash &&
- rand() % cct->_conf->bdev_inject_crash == 0) {
- derr << __func__ << " bdev_inject_crash: dropping io 0x" << std::hex
- << off << "~" << len << std::dec
- << dendl;
- // generate a real io so that aio_wait behaves properly, but make it
- // a read instead of write, and toss the result.
- ioc->pending_aios.push_back(aio_t(ioc, choose_fd(false, write_hint)));
- ++ioc->num_pending;
- auto& aio = ioc->pending_aios.back();
- bufferptr p = buffer::create_small_page_aligned(len);
- aio.bl.append(std::move(p));
- aio.bl.prepare_iov(&aio.iov);
- aio.preadv(off, len);
- ++injecting_crash;
- } else {
- if (bl.length() <= RW_IO_MAX) {
- // fast path (non-huge write)
- ioc->pending_aios.push_back(aio_t(ioc, choose_fd(false, write_hint)));
- ++ioc->num_pending;
- auto& aio = ioc->pending_aios.back();
- bl.prepare_iov(&aio.iov);
- aio.bl.claim_append(bl);
- aio.pwritev(off, len);
- dout(30) << aio << dendl;
- dout(5) << __func__ << " 0x" << std::hex << off << "~" << len
- << std::dec << " aio " << &aio << dendl;
- } else {
- // write in RW_IO_MAX-sized chunks
- uint64_t prev_len = 0;
- while (prev_len < bl.length()) {
- bufferlist tmp;
- if (prev_len + RW_IO_MAX < bl.length()) {
- tmp.substr_of(bl, prev_len, RW_IO_MAX);
- } else {
- tmp.substr_of(bl, prev_len, bl.length() - prev_len);
- }
- auto len = tmp.length();
- ioc->pending_aios.push_back(aio_t(ioc, choose_fd(false, write_hint)));
- ++ioc->num_pending;
- auto& aio = ioc->pending_aios.back();
- tmp.prepare_iov(&aio.iov);
- aio.bl.claim_append(tmp);
- aio.pwritev(off + prev_len, len);
- dout(30) << aio << dendl;
- dout(5) << __func__ << " 0x" << std::hex << off + prev_len
- << "~" << len
- << std::dec << " aio " << &aio << " (piece)" << dendl;
- prev_len += len;
- }
- }
- }
- } else
-#endif
- {
- int r = _sync_write(off, bl, buffered, write_hint);
- _aio_log_finish(ioc, off, len);
- if (r < 0)
- return r;
- }
- return 0;
-}
-
-int HMSMRDevice::discard(uint64_t offset, uint64_t len)
-{
- int r = 0;
- if (cct->_conf->objectstore_blackhole) {
- lderr(cct) << __func__ << " objectstore_blackhole=true, throwing out IO"
- << dendl;
- return 0;
- }
- if (support_discard) {
- dout(10) << __func__
- << " 0x" << std::hex << offset << "~" << len << std::dec
- << dendl;
-
- r = BlkDev{fd_directs[WRITE_LIFE_NOT_SET]}.discard((int64_t)offset, (int64_t)len);
- }
- return r;
-}
-
-int HMSMRDevice::read(uint64_t off, uint64_t len, bufferlist *pbl,
- IOContext *ioc,
- bool buffered)
-{
- dout(5) << __func__ << " 0x" << std::hex << off << "~" << len << std::dec
- << (buffered ? " (buffered)" : " (direct)")
- << dendl;
- ceph_assert(is_valid_io(off, len));
-
- _aio_log_start(ioc, off, len);
-
- auto start1 = mono_clock::now();
-
- auto p = buffer::ptr_node::create(buffer::create_small_page_aligned(len));
- int r = ::pread(buffered ? fd_buffereds[WRITE_LIFE_NOT_SET] : fd_directs[WRITE_LIFE_NOT_SET],
- p->c_str(), len, off);
- auto age = cct->_conf->bdev_debug_aio_log_age;
- if (mono_clock::now() - start1 >= make_timespan(age)) {
- derr << __func__ << " stalled read "
- << " 0x" << std::hex << off << "~" << len << std::dec
- << (buffered ? " (buffered)" : " (direct)")
- << " since " << start1 << ", timeout is "
- << age
- << "s" << dendl;
- }
-
- if (r < 0) {
- if (ioc->allow_eio && is_expected_ioerr(r)) {
- r = -EIO;
- } else {
- r = -errno;
- }
- goto out;
- }
- ceph_assert((uint64_t)r == len);
- pbl->push_back(std::move(p));
-
- dout(40) << "data:\n";
- pbl->hexdump(*_dout);
- *_dout << dendl;
-
- out:
- _aio_log_finish(ioc, off, len);
- return r < 0 ? r : 0;
-}
-
-int HMSMRDevice::aio_read(
- uint64_t off,
- uint64_t len,
- bufferlist *pbl,
- IOContext *ioc)
-{
- dout(5) << __func__ << " 0x" << std::hex << off << "~" << len << std::dec
- << dendl;
-
- int r = 0;
-#ifdef HAVE_LIBAIO
- if (aio && dio) {
- ceph_assert(is_valid_io(off, len));
- _aio_log_start(ioc, off, len);
- ioc->pending_aios.push_back(aio_t(ioc, fd_directs[WRITE_LIFE_NOT_SET]));
- ++ioc->num_pending;
- aio_t& aio = ioc->pending_aios.back();
- bufferptr p = buffer::create_small_page_aligned(len);
- aio.bl.append(std::move(p));
- aio.bl.prepare_iov(&aio.iov);
- aio.preadv(off, len);
- dout(30) << aio << dendl;
- pbl->append(aio.bl);
- dout(5) << __func__ << " 0x" << std::hex << off << "~" << len
- << std::dec << " aio " << &aio << dendl;
- } else
-#endif
- {
- r = read(off, len, pbl, ioc, false);
- }
-
- return r;
-}
-
-int HMSMRDevice::direct_read_unaligned(uint64_t off, uint64_t len, char *buf)
-{
- uint64_t aligned_off = p2align(off, block_size);
- uint64_t aligned_len = p2roundup(off+len, block_size) - aligned_off;
- bufferptr p = buffer::create_small_page_aligned(aligned_len);
- int r = 0;
-
- auto start1 = mono_clock::now();
- r = ::pread(fd_directs[WRITE_LIFE_NOT_SET], p.c_str(), aligned_len, aligned_off);
- auto age = cct->_conf->bdev_debug_aio_log_age;
- if (mono_clock::now() - start1 >= make_timespan(age)) {
- derr << __func__ << " stalled read "
- << " 0x" << std::hex << off << "~" << len << std::dec
- << " since " << start1 << ", timeout is "
- << age
- << "s" << dendl;
- }
-
- if (r < 0) {
- r = -errno;
- derr << __func__ << " 0x" << std::hex << off << "~" << len << std::dec
- << " error: " << cpp_strerror(r) << dendl;
- goto out;
- }
- ceph_assert((uint64_t)r == aligned_len);
- memcpy(buf, p.c_str() + (off - aligned_off), len);
-
- dout(40) << __func__ << " data:\n";
- bufferlist bl;
- bl.append(buf, len);
- bl.hexdump(*_dout);
- *_dout << dendl;
-
- out:
- return r < 0 ? r : 0;
-}
-
-int HMSMRDevice::read_random(uint64_t off, uint64_t len, char *buf,
- bool buffered)
-{
- dout(5) << __func__ << " 0x" << std::hex << off << "~" << len << std::dec
- << "buffered " << buffered
- << dendl;
- ceph_assert(len > 0);
- ceph_assert(off < size);
- ceph_assert(off + len <= size);
- int r = 0;
- auto age = cct->_conf->bdev_debug_aio_log_age;
-
- //if it's direct io and unaligned, we have to use a internal buffer
- if (!buffered && ((off % block_size != 0)
- || (len % block_size != 0)
- || (uintptr_t(buf) % CEPH_PAGE_SIZE != 0)))
- return direct_read_unaligned(off, len, buf);
-
- auto start1 = mono_clock::now();
- if (buffered) {
- //buffered read
- auto off0 = off;
- char *t = buf;
- uint64_t left = len;
- while (left > 0) {
- r = ::pread(fd_buffereds[WRITE_LIFE_NOT_SET], t, left, off);
- if (r < 0) {
- r = -errno;
- derr << __func__ << " 0x" << std::hex << off << "~" << left
- << std::dec << " error: " << cpp_strerror(r) << dendl;
- goto out;
- }
- off += r;
- t += r;
- left -= r;
- }
- if (mono_clock::now() - start1 >= make_timespan(age)) {
- derr << __func__ << " stalled read "
- << " 0x" << std::hex << off0 << "~" << len << std::dec
- << " (buffered) since " << start1 << ", timeout is "
- << age
- << "s" << dendl;
- }
- } else {
- //direct and aligned read
- r = ::pread(fd_directs[WRITE_LIFE_NOT_SET], buf, len, off);
- if (mono_clock::now() - start1 >= make_timespan(age)) {
- derr << __func__ << " stalled read "
- << " 0x" << std::hex << off << "~" << len << std::dec
- << " (direct) since " << start1 << ", timeout is "
- << age
- << "s" << dendl;
- }
- if (r < 0) {
- r = -errno;
- derr << __func__ << " direct_aligned_read" << " 0x" << std::hex
- << off << "~" << left << std::dec << " error: " << cpp_strerror(r)
- << dendl;
- goto out;
- }
- ceph_assert((uint64_t)r == len);
- }
-
- dout(40) << __func__ << " data:\n";
- bufferlist bl;
- bl.append(buf, len);
- bl.hexdump(*_dout);
- *_dout << dendl;
-
- out:
- return r < 0 ? r : 0;
-}
-
-int HMSMRDevice::invalidate_cache(uint64_t off, uint64_t len)
-{
- dout(5) << __func__ << " 0x" << std::hex << off << "~" << len << std::dec
- << dendl;
- ceph_assert(off % block_size == 0);
- ceph_assert(len % block_size == 0);
- int r = posix_fadvise(fd_buffereds[WRITE_LIFE_NOT_SET], off, len, POSIX_FADV_DONTNEED);
- if (r) {
- r = -r;
- derr << __func__ << " 0x" << std::hex << off << "~" << len << std::dec
- << " error: " << cpp_strerror(r) << dendl;
- }
- return r;
}
projects / ceph.git / commitdiff