Prev: [Samba] Machine password change fails
Next: Oplocks
From: Lukas Hejtmanek on 19 Jul 2010 07:30
Hello,

I'm using the Samba server 3.0.33 that exports volume from a GPFS. The GPFS
strongly dislikes unlinking files that are locked (resulting in permission
denied) using fcntl F_SETLEASE.

It seems that the Samba *sometimes* tries to unlink a file that is oplocked.
Why? Is this a bug? Why it does not happen always but only sometimes? I have
strace logs showing:

Wrong case:
8711 14:57:50.765677 open("Y_odloz/D8/D8_03_Ivet_98/06aa6459-a011-40f8-bfb1-25d15e7ada61", O_RDWR|O_CREAT|O_EXCL, 0744) = 121
8711 14:57:50.766030 fstat(121, {st_dev=makedev(0, 23), st_ino=3079419, st_mode=S_IFREG|0744, st_nlink=1, st_uid=40022, st_gid=400, st_blksize=262144, st_blocks=0, st_size=0, st_atime=2010/07/13-14:57:50, st_mtime=2010/07/13-14:57:50, st_ctime=2010/07/13-14:57:50}) = 0
8711 14:57:50.766129 fcntl(12, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=8260, len=1}) = 0
8711 14:57:50.766214 fcntl(121, F_SETSIG, 0x23) = 0
8711 14:57:50.766275 fcntl(121, F_SETLEASE, 0x1) = 0
[...]
8711 14:57:50.789570 stat("Y_odloz/D8/D8_03_Ivet_98/06aa6459-a011-40f8-bfb1-25d15e7ada61", {st_dev=makedev(0, 23), st_ino=3079419, st_mode=S_IFREG|0744, st_nlink=1, st_uid=40022, st_gid=400, st_blksize=262144, st_blocks=0, st_size=0, st_atime=2010/07/13-14:57:50, st_mtime=2010/07/13-14:57:50, st_ctime=2010/07/13-14:57:50}) = 0
8711 14:57:50.789685 unlink("Y_odloz/D8/D8_03_Ivet_98/06aa6459-a011-40f8-bfb1-25d15e7ada61") = -1 EACCES (Permission denied)
[...]
8711 14:58:20.785599 fcntl(121, F_SETSIG, 0x23) = 0
8711 14:58:20.785660 fcntl(121, F_SETLEASE, 0x2) = 0
8711 14:58:20.785736 close(121) = 0

Correct case:
8711 15:02:01.279971 open("Y_odloz/D8/D8_03_Ivet_98/0720d2bf-8619-4ecb-a2eb-d2b806941539", O_RDWR|O_CREAT|O_EXCL, 0744) = 166
8711 15:02:01.333073 fstat(166, {st_dev=makedev(0, 23), st_ino=3164278, st_mode=S_IFREG|0744, st_nlink=1, st_uid=40022, st_gid=400, st_blksize=262144, st_blocks=0, st_size=0, st_atime=2010/07/13-15:02:01, st_mtime=2010/07/13-15:02:01, st_ctime=2010/07/13-15:02:01}) = 0
8711 15:02:01.333221 fcntl(12, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=24956, len=1}) = 0
8711 15:02:01.333309 fcntl(166, F_SETSIG, 0x23) = 0
8711 15:02:01.333371 fcntl(166, F_SETLEASE, 0x1) = 0
[...]
8711 15:02:01.424660 fcntl(166, F_SETSIG, 0x23) = 0
8711 15:02:01.424734 fcntl(166, F_SETLEASE, 0x2) = 0
[...]
8711 15:02:01.513181 stat("Y_odloz/D8/D8_03_Ivet_98/0720d2bf-8619-4ecb-a2eb-d2b806941539", {st_dev=makedev(0, 23), st_ino=3164278, st_mode=S_IFREG|0744, st_nlink=1, st_uid=40022, st_gid=400, st_blksize=262144, st_blocks=0, st_size=0, st_atime=2010/07/13-15:02:01, st_mtime=2010/07/13-15:02:01, st_ctime=2010/07/13-15:02:01}) = 0
8711 15:02:01.513393 unlink("Y_odloz/D8/D8_03_Ivet_98/0720d2bf-8619-4ecb-a2eb-d2b806941539") = 0
[...]
8711 15:02:01.514906 fcntl(12, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=24956, len=1}) = 0
8711 15:02:01.515005 close(166) = 0


--
Luká¹ Hejtmánek
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
 | 
Pages: 1
Prev: [Samba] Machine password change fails
Next: Oplocks