nfs4_setfacl issue when using symlinks: Failed setxattr operation: Invalid argument An error occurred during recursive file tree walk

Mohammad Ali

5/28/23, 1:26 PM

I am working in 2 environments: 1 is a VM running RHEL 7 (PRETTY_NAME="Red Hat Enterprise Linux Server 7.9") for quriosity The other is a kubernetes pod running an ubuntu (PRETTY_NAME="Ubuntu 18.04.5 LTS").

There is an user (jbossrdi) that can run nfs4_acl commands in these environments in order to change ACL for dirs and files. The dirs in the workingdir are owned by this user and have following ACE's which are recursively applied:

A::[email protected]:rwaDxtTnNcCy, A:fdi:[email protected]:rwaDxtTnNcCy

These dirs and files are available in both environments, a slight difference for the k8s pod environment where it is redirected with a symlink. The symlink puts /gpfs/nobackup/projects/seeds_rdi on /gpfs/k8s.

Now the problem occurs when using nfs4_setfacl in the k8s environment since it has a different behaviour. Using strace, I can track what is happening in the nfs4_setfacl command and I observe the following:

setxattr("/gpfs/k8s/data/test/Tools/GLENT/dagw/workingdir/decostfr/fdec280122a/doc/GBS_curation.html", "system.nfs4_acl", "\0\0\0\26\0\0\0\0\0\0\0\0\0\26\1\277\0\0\0\10decostfr\0\0\0", 728, XATTR_REPLACE) = -1 EINVAL (Invalid argument)

In the VM environment performing the same command:

setxattr("/gpfs/nobackup/projects/seeds_rdi/data/test/Tools/GLENT/dagw/workingdir/decostfr/fdec280122a/doc/GBS_curation_original.html", "system.nfs4_acl", "\0\0\0\35\0\0\0\0\0\0\0\0\0\26\1\277\0\0\0\10decostfr\0\0\0", 1036, XATTR_REPLACE) = 0

Something to note is also that this happens on the files and not on the directories. The command that I runned is the following:

strace nfs4_setfacl -Ra A::decostfr:RWXD,A:fdi:decostfr:RWXD /gpfs/nobackup/projects/seeds_rdi/data/test/Tools/GLENT/dagw/workingdir/decostfr/fdec280122a

0 + 0

access-control-list

setfacl

kubernetes

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: nfs4_setfacl issue when using symlinks: Failed setxattr operation: Invalid argument An error occurred during recursive file tree walk

TH: ปัญหา nfs4_setfacl เมื่อใช้ symlinks: การดำเนินการ setxattr ล้มเหลว: อาร์กิวเมนต์ไม่ถูกต้อง เกิดข้อผิดพลาดระหว่างการเดินทรีไฟล์แบบเรียกซ้ำ

RO: Problemă nfs4_setfacl la utilizarea legăturilor simbolice: Operație setxattr eșuată: Argument nevalid A apărut o eroare în timpul trecerii recursive în arborele de fișiere

RU: Проблема nfs4_setfacl при использовании символических ссылок: сбой операции setxattr: неверный аргумент. Произошла ошибка во время рекурсивного обхода дерева файлов.

VI: Sự cố nfs4_setfacl khi sử dụng liên kết tượng trưng: Thao tác setxattr không thành công: Đối số không hợp lệ Đã xảy ra lỗi trong quá trình duyệt cây tệp đệ quy

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.