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Flush writebooster along with manual_gc

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If WB has lots of data, we should flush them by IdleMaint.

Bug: 179030981
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Change-Id: Ib04a8c5f8b7153f2afe88b636415accbbf27c4f8
This commit is contained in:
Jaegeuk Kim
2021-02-01 10:18:24 -08:00
parent 4213f692b4
commit 356c8371ca
1 changed files with 54 additions and 18 deletions
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72
health/storage/impl_common/impl_common.cpp
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@@ -45,32 +45,59 @@ static std::string GetGarbageCollectPath() {
return "";
}
Result GarbageCollect(uint64_t timeout_seconds) {
std::string path = GetGarbageCollectPath();
static std::string GetWriteBoosterPath() {
Fstab fstab;
ReadDefaultFstab(&fstab);
if (path.empty()) {
for (const auto& entry : fstab) {
if (!entry.sysfs_path.empty()) {
return entry.sysfs_path + "/attributes/wb_avail_buf";
}
}
return "";
}
Result GarbageCollect(uint64_t timeout_seconds) {
std::string gc_path = GetGarbageCollectPath();
if (gc_path.empty()) {
LOG(WARNING) << "Cannot find Dev GC path";
return Result::UNKNOWN_ERROR;
}
Result result = Result::SUCCESS;
Timer timer;
LOG(INFO) << "Start Dev GC on " << path;
LOG(INFO) << "Start Dev GC on " << gc_path;
while (1) {
std::string require;
if (!ReadFileToString(path, &require)) {
PLOG(WARNING) << "Reading manual_gc failed in " << path;
std::string require_gc;
if (!ReadFileToString(gc_path, &require_gc)) {
PLOG(WARNING) << "Reading manual_gc failed in " << gc_path;
result = Result::IO_ERROR;
break;
}
require = Trim(require);
if (require == "" || require == "off" || require == "disabled") {
require_gc = Trim(require_gc);
std::string wb_path = GetWriteBoosterPath();
// Let's flush WB till 100% available
std::string wb_avail = "0x0000000A";
if (!wb_path.empty() && !ReadFileToString(wb_path, &wb_avail)) {
PLOG(WARNING) << "Reading wb_avail_buf failed in " << wb_path;
}
wb_avail = Trim(wb_avail);
if (require_gc == "disabled") {
LOG(DEBUG) << "Disabled Dev GC";
break;
}
if ((require_gc == "" || require_gc == "off") && wb_avail == "0x0000000A") {
LOG(DEBUG) << "No more to do Dev GC";
break;
}
LOG(DEBUG) << "Trigger Dev GC on " << path;
if (!WriteStringToFile("1", path)) {
PLOG(WARNING) << "Start Dev GC failed on " << path;
LOG(DEBUG) << "Trigger Dev GC on " << gc_path << " having " << require_gc << ", WB on "
<< wb_path << " having " << wb_avail;
if (!WriteStringToFile("1", gc_path)) {
PLOG(WARNING) << "Start Dev GC failed on " << gc_path;
result = Result::IO_ERROR;
break;
}
@@ -81,9 +108,9 @@ Result GarbageCollect(uint64_t timeout_seconds) {
}
sleep(2);
}
LOG(INFO) << "Stop Dev GC on " << path;
if (!WriteStringToFile("0", path)) {
PLOG(WARNING) << "Stop Dev GC failed on " << path;
LOG(INFO) << "Stop Dev GC on " << gc_path;
if (!WriteStringToFile("0", gc_path)) {
PLOG(WARNING) << "Stop Dev GC failed on " << gc_path;
result = Result::IO_ERROR;
}
@@ -97,17 +124,26 @@ void DebugDump(int fd) {
if (path.empty()) {
output << "Cannot find Dev GC path";
} else {
std::string require;
std::string require_gc;
if (ReadFileToString(path, &require)) {
output << path << ":" << require << std::endl;
if (ReadFileToString(path, &require_gc)) {
output << path << ":" << require_gc << std::endl;
}
if (WriteStringToFile("0", path)) {
output << "stop success" << std::endl;
}
}
std::string wb_path = GetWriteBoosterPath();
if (wb_path.empty()) {
output << "Cannot find Dev WriteBooster path";
} else {
std::string wb_available;
if (ReadFileToString(wb_path, &wb_available)) {
output << wb_path << ":" << wb_available << std::endl;
}
}
if (!WriteStringToFd(output.str(), fd)) {
PLOG(WARNING) << "debug: cannot write to fd";
}