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doc/cephfs: add note about CephFS extended attributes and getfattr

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Supersedes https://github.com/ceph/ceph/pull/50060

Add a note on the fact that CephFS extended attributes are not printed
by "getfattr /some/cephfs/dir/ -d -m -" even when the CephFS directory
has some extended attributes set on it.

https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/thread/6ENI42ZMHTTP2OONBRD7FDP7LQBC4P2E/

Primary Author: Rishabh Dave <ridave@redhat.com>
Co-author: Anthony D'Atri <anthony.datri@gmail.com>
Signed-off-by: Zac Dover <zac.dover@proton.me>
This commit is contained in:
Zac Dover 2023-02-10 08:59:00 +10:00
parent b83fbc2ad0
commit 7f23dde6be
1 changed files with 8 additions and 0 deletions
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8
doc/cephfs/quota.rst
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@ -86,3 +86,11 @@ To remove a quota::
setfattr -n ceph.quota.max_bytes -v 0 /some/dir
setfattr -n ceph.quota.max_files -v 0 /some/dir
.. note:: In cases where CephFS extended attributes are set on a CephFS
directory (for example, ``/some/dir``), running ``getfattr /some/dir -d -m
-`` will not print those CephFS extended attributes. This is because CephFS
kernel and FUSE clients hide this information from the ``listxattr(2)``
system call. You can access a specific CephFS extended attribute by running
``getfattr /some/dir -n ceph.<some-xattr>`` instead.