quicklisp does not lock system-index.txt file

quicklisp / quicklisp-client

Quicklisp client.

http://www.quicklisp.org/

MIT License

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quicklisp does not lock system-index.txt file #178

Open guicho271828 opened 5 years ago

guicho271828 commented 5 years ago

When two processes run in parallel, valious asdf-related calls (e.g. system-relative-pathname in my case) simultaneously tries to delete system-index.txt.bak which fail because another process has already deleted it. Candidate solutions:

Take some form of file lock on system-index.txt
Ignore the error and just ensure the backup file is deleted
Name the backup file with a hash value to minimize the collision

guicho271828 commented 5 years ago

I've run into this problem on a compute cluster running on IBM GPFS[1] but it would not be the cause of the problem. [1] https://www.ibm.com/support/knowledgecenter/en/SSPT3X_3.0.0/com.ibm.swg.im.infosphere.biginsights.product.doc/doc/bi_gpfs_overview.html