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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"creating venv Python3.13 on CIFS mounted drive fails ENODATA","articleBody":"# Bug report\n\n### Bug description:\n\nMy Ubuntu environment has been running with my Python projects on a Synaptic NAS (mounted as cifs) for several years.  Relevant line from `/etc/fstab`:\n\n`//DiskStation.local/home /media/data/[user] cifs uid=1000,forceuid,iocharset=utf8,vers=3.0,credentials=[credsfile] 0 0`\n\nNow with upgrade to python3.13, when I try to create or upgrade a venv, I get:\n\n`python -m venv venv_test` -\u003e `Error: [Errno 61] No data available: 'lib' -\u003e '/media/data/[user]/test/venv_test/lib64'`\n\nSome investigation leads me to \"can't create symlinks on a cifs drive\", as shown:\n\n`ln -s venv_test/lib venv_test/lib64` -\u003e `ln: failed to create symbolic link 'venv_test/lib64': No data available`\n\nSo, I try with `--copies` instead:\n\n`python -m venv --copies venv_test` -\u003e `Error: [Errno 61] No data available: 'lib' -\u003e '/media/data/[user]/test/venv_test/lib64'`\n\nAs I said, this used to work in python 3.10.  If it won't work by design now, fine; I can put the venvs off that drive.  But the error message should be more clear, or at least there should be a way to get more verbose information.\n\n\n### CPython versions tested on:\n\n3.13\n\n### Operating systems tested on:\n\nLinux\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-137139\n* gh-139607\n* gh-139704\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/mycroftw","@type":"Person","name":"mycroftw"},"datePublished":"2025-05-12T19:50:49.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/133951/cpython/issues/133951"}