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seaweedfs/weed/mount/locked_entry.go

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2022-12-05 15:33:05 +08:00
package mount
import (
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"sync"
)
type LockedEntry struct {
*filer_pb.Entry
sync.RWMutex
}
func (le *LockedEntry) GetEntry() *filer_pb.Entry {
le.RLock()
defer le.RUnlock()
return le.Entry
}
Fix dead lock (#5815) * reduce locks to avoid dead lock Flush->FlushData->uplloadPipeline.FluahAll uploaderCount>0 goroutine 1 [sync.Cond.Wait, 71 minutes]: sync.runtime_notifyListWait(0xc0007ae4d0, 0x0) /usr/local/go/src/runtime/sema.go:569 +0x159 sync.(*Cond).Wait(0xc001a59290?) /usr/local/go/src/sync/cond.go:70 +0x85 github.com/seaweedfs/seaweedfs/weed/mount/page_writer.(*UploadPipeline).waitForCurrentWritersToComplete(0xc0002ee4d0) /github/workspace/weed/mount/page_writer/upload_pipeline_lock.go:58 +0x32 github.com/seaweedfs/seaweedfs/weed/mount/page_writer.(*UploadPipeline).FlushAll(0xc0002ee4d0) /github/workspace/weed/mount/page_writer/upload_pipeline.go:151 +0x25 github.com/seaweedfs/seaweedfs/weed/mount.(*ChunkedDirtyPages).FlushData(0xc00087e840) /github/workspace/weed/mount/dirty_pages_chunked.go:54 +0x29 github.com/seaweedfs/seaweedfs/weed/mount.(*PageWriter).FlushData(...) /github/workspace/weed/mount/page_writer.go:50 github.com/seaweedfs/seaweedfs/weed/mount.(*WFS).doFlush(0xc0006ad600, 0xc00030d380, 0x0, 0x0) /github/workspace/weed/mount/weedfs_file_sync.go:101 +0x169 github.com/seaweedfs/seaweedfs/weed/mount.(*WFS).Flush(0xc0006ad600, 0xc001a594a8?, 0xc0004c1ca0) /github/workspace/weed/mount/weedfs_file_sync.go:59 +0x48 github.com/hanwen/go-fuse/v2/fuse.doFlush(0xc0000da870?, 0xc0004c1b08) SaveContent -> MemChunk.RLock -> ChunkedDirtyPages.saveChunkedFileIntervalToStorage pages.fh.AddChunks([]*filer_pb.FileChunk{chunk}) fh.entryLock.Lock() sync.(*RWMutex).Lock(0x0?) /usr/local/go/src/sync/rwmutex.go:146 +0x31 github.com/seaweedfs/seaweedfs/weed/mount.(*FileHandle).AddChunks(0xc00030d380, {0xc00028bdc8, 0x1, 0x1}) /github/workspace/weed/mount/filehandle.go:93 +0x45 github.com/seaweedfs/seaweedfs/weed/mount.(*ChunkedDirtyPages).saveChunkedFileIntervalToStorage(0xc00087e840, {0x2be7ac0, 0xc00018d9e0}, 0x0, 0x121, 0x17e3c624565ace45, 0x1?) /github/workspace/weed/mount/dirty_pages_chunked.go:80 +0x2d4 github.com/seaweedfs/seaweedfs/weed/mount/page_writer.(*MemChunk).SaveContent(0xc0008d9130, 0xc0008093e0) /github/workspace/weed/mount/page_writer/page_chunk_mem.go:115 +0x112 github.com/seaweedfs/seaweedfs/weed/mount/page_writer.(*UploadPipeline).moveToSealed.func1() /github/workspace/weed/mount/page_writer/upload_pipeline.go:187 +0x55 github.com/seaweedfs/seaweedfs/weed/util.(*LimitedConcurrentExecutor).Execute.func1() /github/workspace/weed/util/limited_executor.go:38 +0x62 created by github.com/seaweedfs/seaweedfs/weed/util.(*LimitedConcurrentExecutor).Execute in goroutine 1 /github/workspace/weed/util/limited_executor.go:33 +0x97 On metadata update fh.entryLock.Lock() fh.dirtyPages.Destroy() up.chunksLock.Lock => each sealed chunk.FreeReference => MemChunk.Lock goroutine 134 [sync.RWMutex.Lock, 71 minutes]: sync.runtime_SemacquireRWMutex(0xc0007c3558?, 0xea?, 0x3fb0800?) /usr/local/go/src/runtime/sema.go:87 +0x25 sync.(*RWMutex).Lock(0xc0007c35a8?) /usr/local/go/src/sync/rwmutex.go:151 +0x6a github.com/seaweedfs/seaweedfs/weed/mount/page_writer.(*MemChunk).FreeResource(0xc0008d9130) /github/workspace/weed/mount/page_writer/page_chunk_mem.go:38 +0x2a github.com/seaweedfs/seaweedfs/weed/mount/page_writer.(*SealedChunk).FreeReference(0xc00071cdb0, {0xc0006ba1a0, 0x20}) /github/workspace/weed/mount/page_writer/upload_pipeline.go:38 +0xb7 github.com/seaweedfs/seaweedfs/weed/mount/page_writer.(*UploadPipeline).Shutdown(0xc0002ee4d0) /github/workspace/weed/mount/page_writer/upload_pipeline.go:220 +0x185 github.com/seaweedfs/seaweedfs/weed/mount.(*ChunkedDirtyPages).Destroy(0xc0008cea40?) /github/workspace/weed/mount/dirty_pages_chunked.go:87 +0x17 github.com/seaweedfs/seaweedfs/weed/mount.(*PageWriter).Destroy(...) /github/workspace/weed/mount/page_writer.go:78 github.com/seaweedfs/seaweedfs/weed/mount.NewSeaweedFileSystem.func3({0xc00069a6c0, 0x30}, 0x6?) /github/workspace/weed/mount/weedfs.go:119 +0x17a github.com/seaweedfs/seaweedfs/weed/mount/meta_cache.NewMetaCache.func1({0xc00069a6c0?, 0xc00069a480?}, 0x4015b40?) /github/workspace/weed/mount/meta_cache/meta_cache.go:37 +0x1c github.com/seaweedfs/seaweedfs/weed/mount/meta_cache.SubscribeMetaEvents.func1(0xc000661810) /github/workspace/weed/mount/meta_cache/meta_cache_subscribe.go:43 +0x570 * use locked entry everywhere * modifiable remote entry * skip locking after getting lock from fhLockTable
2024-07-25 14:46:40 +08:00
// SetEntry sets the entry of the LockedEntry
// entry should never be nil
2022-12-05 15:33:05 +08:00
func (le *LockedEntry) SetEntry(entry *filer_pb.Entry) {
le.Lock()
defer le.Unlock()
le.Entry = entry
}
func (le *LockedEntry) UpdateEntry(fn func(entry *filer_pb.Entry)) *filer_pb.Entry {
le.Lock()
defer le.Unlock()
fn(le.Entry)
return le.Entry
}
func (le *LockedEntry) GetChunks() []*filer_pb.FileChunk {
le.RLock()
defer le.RUnlock()
return le.Entry.Chunks
}
func (le *LockedEntry) AppendChunks(newChunks []*filer_pb.FileChunk) {
le.Lock()
defer le.Unlock()
le.Entry.Chunks = append(le.Entry.Chunks, newChunks...)
}