Date: Mon, 29 Feb 2016 16:45:03 -0500 From: Ken Merry <ken@freebsd.org> To: fs@freebsd.org Cc: scsi@freebsd.org Subject: FUSE extended attribute patches available Message-ID: <CD5FCB90-1952-4014-BBE0-1BFF1EF85E17@freebsd.org>
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I have patches for FreeBSD=E2=80=99s FUSE filesystem kernel module to = support extended attributes: https://people.freebsd.org/~ken/fuse_extattr.20160229.1.txt The patch implements the get/set/delete/list extended attribute methods. = The listing code also converts extended attribute lists from the = Linux/FUSE format to the FreeBSD format. For example: # touch foo # ls -la foo -rwxrwxrwx 1 root wheel 0 Feb 29 21:40 foo # lsextattr user foo foo # setextattr user testattr1 "12345678" foo # lsextattr user foo foo testattr1 # getextattr user testattr1 foo foo 12345678 # setextattr user testattr2 "87654321" foo # lsextattr user foo foo testattr2 testattr1 # rmextattr user testattr1 foo # lsextattr user foo foo testattr2 # getextattr user testattr1 foo getextattr: foo: failed: Attribute not found # getextattr user testattr2 foo foo 87654321 Just to be clear on what this does, it only provides extended attribute = support to FreeBSD applications if the underlying FUSE filesystem = implements FUSE extended attribute support. Many FUSE filesystems = don=E2=80=99t support the extended attribute VFS operations. I have tested this out on IBM=E2=80=99s LTFS implementation, but I have = not yet found another FUSE filesystem that supports extended attributes. = If anyone knows of one, please let me know so I can try it out. (I = looked through a number of the filesystems in sysutils/fusefs* in the = ports tree.) Any feedback is welcome. I=E2=80=99m planning to check this into = FreeBSD/head in the next week or so. Obviously, I=E2=80=99ve also ported IBM=E2=80=99s LTFS implementation to = FreeBSD. It works in the standard FUSE mode, and you can also link it = into an application as a library if you don=E2=80=99t want to incur the = overhead of running through FUSE. I haven=E2=80=99t gotten around to = packaging it up to go out for testing / review. If anyone has IBM LTO-5 or newer tape drives, or IBM TS1140 or newer = tape drives, and wants to try it out, let me know. I=E2=80=99ll send = you the code when I=E2=80=99ve got it at least somewhat ready. This is = IBM-specific, and won=E2=80=99t work on HP tape drives. Ken =E2=80=94=20 Ken Merry ken@FreeBSD.ORG
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