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Context cancellation during reading range reading large files (#7093)

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* context cancellation during reading range reading large files

* address comments

* cancellation for fuse read

* fix cancellation

* pass in context for each function to avoid racing condition

* Update reader_at_test.go

* remove dead code

* Update weed/filer/reader_at.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/filer/filechunk_group.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/filer/filechunk_group.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* address comments

* Update weed/mount/weedfs_file_read.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/mount/weedfs_file_lseek.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/mount/weedfs_file_read.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/filer/reader_at.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/mount/weedfs_file_lseek.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* test cancellation

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Chris Lu
2025-08-06 10:09:26 -07:00
committed by GitHub
parent e446234e9c
commit 4af182f880
14 changed files with 231 additions and 49 deletions
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15
weed/mount/weedfs_file_lseek.go
View File

@@ -1,9 +1,11 @@
package mount
import (
"github.com/seaweedfs/seaweedfs/weed/util"
"context"
"syscall"
"github.com/seaweedfs/seaweedfs/weed/util"
"github.com/hanwen/go-fuse/v2/fuse"
"github.com/seaweedfs/seaweedfs/weed/filer"
@@ -54,8 +56,17 @@ func (wfs *WFS) Lseek(cancel <-chan struct{}, in *fuse.LseekIn, out *fuse.LseekO
return ENXIO
}
// Create a context that will be cancelled when the cancel channel receives a signal
ctx, cancelFunc := context.WithCancel(context.Background())
go func() {
select {
case <-cancel:
cancelFunc()
}
}()
// search chunks for the offset
found, offset := fh.entryChunkGroup.SearchChunks(offset, fileSize, in.Whence)
found, offset := fh.entryChunkGroup.SearchChunks(ctx, offset, fileSize, in.Whence)
if found {
out.Offset = uint64(offset)
return fuse.OK