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claude-code - 💡(How to fix) Fix [BUG] Virtiofs [3 comments, 3 participants]

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anthropics/claude-code#55112•Fetched 2026-05-01 05:45:57
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Error Message

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Details RPC error: failed to mount /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents/Claude/Scheduled/rev-rec-triage-daily as .scheduled/rev-rec-triage-daily: source path does not exist and could not be created: /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents/Claude/Scheduled/rev-rec-triage-daily: mkdir /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents: file exists You can restart the conversation from an earlier message.

Root Cause

Root cause: CoWork discovers tasks via ~/Documents/Claude/Scheduled/ (the symlink path) and passes that path directly to virtiofs for mounting. When virtiofs tries to build the mount, it hits mkdir .../Users/Fraser.Wilsher/Documents and fails because Documents is a symlink, not a real directory. If CoWork used realpath() first, it would use /Users/Fraser.Wilsher/Library/CloudStorage/OneDrive-NiCELtd(2)/Documents/Claude/Scheduled/rev-rec-triage-daily — and virtiofs would succeed.

Code Example

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Details
RPC error: failed to mount /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents/Claude/Scheduled/rev-rec-triage-daily as .scheduled/rev-rec-triage-daily: source path does not exist and could not be created: /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents/Claude/Scheduled/rev-rec-triage-daily: mkdir /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents: file exists
You can restart the conversation from an earlier message.
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Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

RPC error: failed to mount ...Documents/Claude/Scheduled/rev-rec-triage-daily... mkdir .../Users/Fraser.Wilsher/Documents: file exists

Mention: ~/Documents is a symlink → /Users/Fraser.Wilsher/Library/CloudStorage/OneDrive-NiCELtd(2)/Documents. Request: CoWork should call realpath() on task paths before passing them to virtiofs.

Root cause: CoWork discovers tasks via ~/Documents/Claude/Scheduled/ (the symlink path) and passes that path directly to virtiofs for mounting. When virtiofs tries to build the mount, it hits mkdir .../Users/Fraser.Wilsher/Documents and fails because Documents is a symlink, not a real directory. If CoWork used realpath() first, it would use /Users/Fraser.Wilsher/Library/CloudStorage/OneDrive-NiCELtd(2)/Documents/Claude/Scheduled/rev-rec-triage-daily — and virtiofs would succeed.

~/Documents is a symlink → /Users/Fraser.Wilsher/Library/CloudStorage/OneDrive-NiCELtd(2)/Documents Full error: mkdir /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents: file exists Fix needed: CoWork should call realpath() on task paths before passing to virtiofs

What Should Happen?

Claude Cowork should function

Error Messages/Logs

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Details
RPC error: failed to mount /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents/Claude/Scheduled/rev-rec-triage-daily as .scheduled/rev-rec-triage-daily: source path does not exist and could not be created: /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents/Claude/Scheduled/rev-rec-triage-daily: mkdir /mnt/.virtiofs-root/shared/Users/Fraser.Wilsher/Documents: file exists
You can restart the conversation from an earlier message.

Steps to Reproduce

Try and / run a new or existing Cowork Task

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

1.0.123

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The most likely fix is to modify CoWork to call realpath() on task paths before passing them to virtiofs to resolve the symlink issue.

Guidance

  • The error occurs because CoWork passes a symlink path to virtiofs, which fails to mount the directory.
  • To verify the issue, check if the task path is a symlink and if realpath() resolves it correctly.
  • Modify CoWork to call realpath() on task paths before passing them to virtiofs to resolve the symlink.
  • Test the modified CoWork with a new or existing task to ensure the issue is resolved.

Example

No code snippet is provided as the issue does not contain sufficient code context.

Notes

The fix assumes that realpath() is available and functional on the platform. Additionally, the issue may be specific to macOS or the Anthropic API.

Recommendation

Apply workaround: Modify CoWork to call realpath() on task paths before passing them to virtiofs, as this is a targeted fix for the identified issue.

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claude-code - 💡(How to fix) Fix [BUG] Virtiofs [3 comments, 3 participants]