Bug#1069855: strace

["Andreas B. Mundt" <andi@debian.org>]

Hi,

here are parts of the strace, one with a samba share where the archive
is removed, and one with a ksmbd share which works fine:

samba:

[pid 101820<ark>] poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}, {fd=8, events=POLLIN}, {fd=14, events=POLLIN}], 4, 473 <unfinished ...>
[pid 101840<Kerfuffle::Job:>] write(23, "\37\213\10\0TS+f\0\3\355Zy<T{\377G\224\306V\332\220r\262\20403\366\235\354K"..., 5694) = 5694
[pid 101840<Kerfuffle::Job:>] lseek(23, 0, SEEK_SET) = 0
[pid 101840<Kerfuffle::Job:>] fdatasync(23) = 0
[pid 101840<Kerfuffle::Job:>] close(23) = 0
[pid 101840<Kerfuffle::Job:>] rename("/media/samba/test.tar.gz.PywIFJ", "/media/samba/test.tar.gz") = -1 EACCES (Permission denied)
[pid 101840<Kerfuffle::Job:>] unlink("/media/samba/test.tar.gz.PywIFJ") = 0
[pid 101840<Kerfuffle::Job:>] write(5, "\1\0\0\0\0\0\0\0", 8) = 8
[pid 101840<Kerfuffle::Job:>] write(5, "\1\0\0\0\0\0\0\0", 8 <unfinished ...>
[pid 101820<ark>] <... poll resumed>)   = 1 ([{fd=5, revents=POLLIN}])

The rename fails (samba lock?) and then the temporary archive is
removed.

ksmbd:

[pid 101861<ark>] poll([{fd=5, events=POLLIN}, {fd=6, events=POLLIN}, {fd=8, events=POLLIN}, {fd=14, events=POLLIN}], 4, 7 <unfinished ...>
[pid 101881<Kerfuffle::Job:>] <... fdatasync resumed>) = 0
[pid 101881<Kerfuffle::Job:>] close(23) = 0
[pid 101881<Kerfuffle::Job:>] rename("/media/ksmbd/test.tar.gz.DRmBuC", "/media/ksmbd/test.tar.gz") = 0
[pid 101881<Kerfuffle::Job:>] write(5, "\1\0\0\0\0\0\0\0", 8) = 8
[pid 101861<ark>] <... poll resumed>)   = 1 ([{fd=5, revents=POLLIN}])

Here the rename succeeds and things work as expected.
Looks like the same problem as discussed in [1].

Best regards,

  Andi

[1] https://bugs.documentfoundation.org/show_bug.cgi?id=55004#c56