`tsc --watch` in virtual machine fails with `fanotify_mark on '...' failed: invalid cross-device link` trying to watch parent directories

障害は fanotify ウォッチャーの呼び出しに由来し、親ディレクトリ /home/michael/Sync/Projects に対して EXDEV を返します。報告者は inotify にフォールバックする既存のチェックをリンクしており、そこでも EXDEV を処理すれば直ると述べています。そのチェックと、それを呼び出すウォッチのセットアップから始めてください。virtiofs マウントをまたぐパスで tsc --watch を実行したときに、失敗せず inotify にフォールバックすること、そして既存のウォッチの動作のテストが引き続き通ることが完了条件です。

🔎 Search Terms

Hi,

I'm using TypeScript in a VM and TypeScript 7's fanotify-based watching consistently fails (and tsc doesn't watch at all as result).

Filesystems are mounted like this:

/storage                         type ext4
/                                type overlay  (rw,relatime,lowerdir+=/storage/...,upperdir=/storage/...,workdir=/storage/...,index=off)
/home/michael                    type virtiofs (rw,relatime)
/home/michael/Sync/Projects/test type virtiofs (rw,relatime)

🕗 Version & Regression Information

• This changed between versions 6.0.2 and 7.0.0

⏯ Playground Link

No response

💻 Code

n/a (doesn't depend on input file content)

I tried to include a reasonably small reproduction script, but it doesn't reproduce easily with loopback-mounted ext4, tmpfs, overlayfs or similar.

🙁 Actual behavior

$ node_modules/.bin/tsc --watch
[07:39:08 PM] Starting compilation in watch mode...
fanotify_mark on '/home/michael/Sync/Projects/test' failed: invalid cross-device link

(never updates when changing files)

🙂 Expected behavior

$ node_modules/.bin/tsc --watch
[07:39:08 PM] Starting compilation in watch mode...

(and updates when changing files)

Additional information about the issue

strace reveals a lot about what tsc is doing:

$ strace -f -e trace=fanotify_init,fanotify_mark ./node_modules/.bin/tsc --watch
[pid  7886] fanotify_init(FAN_CLASS_NOTIF|FAN_CLOEXEC|FAN_NONBLOCK|FAN_REPORT_FID|FAN_REPORT_DIR_FID|FAN_REPORT_NAME, O_RDONLY|O_CLOEXEC) = 7
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_REMOVE|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/@typescript") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/@typescript/typescript-linux-x64") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/@typescript/typescript-linux-x64/lib") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/bin") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/lib") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/dist") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/dist/api") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/dist/api/async") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/dist/api/sync") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/dist/api/node") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/dist/ast") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/dist/enums") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/dist/internal") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/vendor") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/vendor/vscode-jsonrpc") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/vendor/vscode-jsonrpc/lib") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/vendor/vscode-jsonrpc/lib/common") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/vendor/vscode-jsonrpc/lib/browser") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/vendor/vscode-jsonrpc/lib/node") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/typescript/vendor/vscode-jsonrpc/typings") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects/test/node_modules/.bin") = 0
[pid  7877] fanotify_mark(7, FAN_MARK_ADD|FAN_MARK_DONT_FOLLOW|FAN_MARK_ONLYDIR, FAN_MODIFY|FAN_CREATE|FAN_DELETE|FAN_DELETE_SELF|FAN_MOVE_SELF|FAN_EVENT_ON_CHILD|FAN_RENAME|FAN_ONDIR, AT_FDCWD, "/home/michael/Sync/Projects") = -1 EXDEV (Invalid cross-device link)

And it's trying to start watching all the parent directories above the project, too (and starting to fail there).

I looked for known issues and found the very similar #63646 (but that's already closed).

Instead of trying longer to find a small reproduction script that boots up a VM, I just tried out extending the existing check that triggers a fallback to inotify.

And 3.8 GiB disk space later I can confirm that just checking for EXDEV, too, fixes my issue and it works blazingly fast and smooth compared to pre-7.0.