It's a known bug, I've been slow to get it upstream, apologies, I'll try
to get it in for -rc4.
--b.
On Sat, May 27, 2017 at 08:59:56AM +0900, J. R. Okajima wrote:
> Andreas Dilger:
> > > open("../ro/f_src", O_RDONLY) = 3
> > > fstat(3, {st_mode=S_IFREG|0644, st_size=2, ...}) = 0
> > > open("./f_src", O_WRONLY|O_CREAT|O_EXCL, 0600) = 4
> > > fstat(4, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
> > > fadvise64(3, 0, 0, POSIX_FADV_SEQUENTIAL) = 0
> > > mmap(NULL, 139264, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcb293f8000
> > > read(3, "f\n", 131072) = 2
> > > write(4, "f\n", 2) = 2
> > > read(3, "", 131072) = 0
> > > utimensat(4, NULL, {{1495750885, 0}, {1495750885, 0}}, 0) = 0
> > > fgetxattr(3, "system.posix_acl_access", 0x7ffed40196d0, 132) = -1 ENODATA (No data available)
> > > fstat(3, {st_mode=S_IFREG|0644, st_size=2, ...}) = 0
> > > fsetxattr(4, "system.posix_acl_access", "\x02\x00\x00\x00\x01\x00\x06\x00\xff\xff\xff\xff\x04\x00\x04\x00\xff\xff\xff\xff \x00\x04\x00\xff\xff\xff\xff", 28, 0) = -1 EACCES (Permission denied)
> >
> > To me this looks like "cp" is broken. If it gets no POSIX ACL xattr from the
> > kernel (ENODATA) for this file, why is it trying to save a POSIX ACL to the
> > copy? That just adds needless overhead, either at the syscall level, or also
> > on disk if it is storing ACLs on files that don't need them...
>
> Maybe you are right.
> But on v4.11, it succeeded.
>
> open("../ro/f_src", O_RDONLY) = 3
> fstat(3, {st_mode=S_IFREG|0644, st_size=2, ...}) = 0
> open("./f_src", O_WRONLY|O_CREAT|O_EXCL, 0600) = 4
> fstat(4, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
> fadvise64(3, 0, 0, POSIX_FADV_SEQUENTIAL) = 0
> mmap(NULL, 139264, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3dcf031000
> read(3, "f\n", 131072) = 2
> write(4, "f\n", 2) = 2
> read(3, "", 131072) = 0
> utimensat(4, NULL, {{1495842847, 0}, {1495842847, 0}}, 0) = 0
> fgetxattr(3, "system.posix_acl_access", 0x7fff63443360, 132) = -1 ENODATA (No data available)
> fstat(3, {st_mode=S_IFREG|0644, st_size=2, ...}) = 0
> fsetxattr(4, "system.posix_acl_access", "\x02\x00\x00\x00\x01\x00\x06\x00\xff\xff\xff\xff\x04\x00\x04\x00\xff\xff\xff\xff \x00\x04\x00\xff\xff\xff\xff", 28, 0) = 0
>
>
> J. R. Okajima
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