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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Xattr tests with FUSE-T are broken on CI","articleBody":"Since around September 2025 normal CI builds fail due to failing tests:\n* https://github.com/cryptomator/jfuse/actions/runs/21290356808/job/61282028989\n* https://github.com/cryptomator/jfuse/actions/runs/18088981928\n* etc\n\nIt only happens on macOS runners. For testing the FUSE-T library installed via brew is used. The test suite fails on the `TestXattr` integrations test:\n```\nError:    MirrorIT$TestXattr.testSetxattr:231 Unexpected exception thrown: java.nio.file.FileSystemException: /var/folders/kg/7q73ww8s3llgyl61c9z_j5g40000gn/T/junit-8422338435824566285/mirror/xattr.txt: Error writing extended attribute 'attr1': Operation not permitted\nError:    MirrorIT$TestXattr.testSetxattr:231 Unexpected exception thrown: java.nio.file.FileSystemException: /var/folders/kg/7q73ww8s3llgyl61c9z_j5g40000gn/T/junit-8422338435824566285/mirror/xattr.txt: Error writing extended attribute 'attr2': Operation not permitted\nError:    MirrorIT$TestXattr.testSetxattr:231 Unexpected exception thrown: java.nio.file.FileSystemException: /var/folders/kg/7q73ww8s3llgyl61c9z_j5g40000gn/T/junit-8422338435824566285/mirror/xattr.txt: Error writing extended attribute 'attr3': Operation not permitted\nError:    MirrorIT$TestXattr.testSetxattr:231 Unexpected exception thrown: java.nio.file.FileSystemException: /var/folders/kg/7q73ww8s3llgyl61c9z_j5g40000gn/T/junit-8422338435824566285/mirror/xattr.txt: Error writing extended attribute 'attr4': Operation not permitted\nError:    MirrorIT$TestXattr.testSetxattr:231 Unexpected exception thrown: java.nio.file.FileSystemException: /var/folders/kg/7q73ww8s3llgyl61c9z_j5g40000gn/T/junit-8422338435824566285/mirror/xattr.txt: Error writing extended attribute 'attr5': Operation not permitted\n```\n\nSetting xattr.txt in the source directory of the mirror test fails due to insufficient permissions.","author":{"url":"https://github.com/infeo","@type":"Person","name":"infeo"},"datePublished":"2026-01-26T09:10:44.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/147/jfuse/issues/147"}