On 10/21/2013 09:52 PM, Dave Jones wrote: > On Mon, Oct 21, 2013 at 08:40:20PM +0200, Toralf Förster wrote: > > got today : > > > > run trinity at Mon Oct 21 20:38:27 CEST 2013 28#-1 M=/mnt/nfsv4 > > > > rm: cannot remove '/mnt/nfsv4/victims/v1/v2/.nfs0000000000004924000000cb': Device or resource busy > > rm: cannot remove '/mnt/nfsv4/victims/v1/v2/.nfs0000000000003fdd000000a9': Device or resource busy > > rm: cannot remove '/mnt/nfsv4/victims/v1/v2/.nfs00000000000034230000007a': Device or resource busy > > rm: cannot remove '/mnt/nfsv4/victims/v1/v2/.nfs0000000000002d320000006b': Device or resource busy > > rm: cannot remove '/mnt/nfsv4/victims/v1/v2/.nfs0000000000001a7c00000035': Device or resource busy > > rm: cannot remove '/mnt/nfsv4/victims/v1/v2/.nfs00000000000017600000002a': Device or resource busy > > Trinity v1.3pre Dave Jones <davej@xxxxxxxxxx> > > Done parsing arguments. > > Marking all syscalls as enabled. > > [init] Enabled 351 syscalls. Disabled 0 syscalls. > > [init] Using pid_max = 32768 > > [init] Started watchdog process, PID is 15311 > > [main] Main thread is alive. > > [main] Generating file descriptors > > [main] Something went wrong during nftw(/mnt/nfsv4/victims/v1/v2). (-1:Value too large for defined data type) > > So NFS returned -EOVERFLOW. Not sure why it would do that, but I'm goingto guess it > came from nftw internally doing an lseek. lseek's man page suggests.. > > EOVERFLOW > The resulting file offset cannot be represented in an off_t. > > 64bit server and 32 bit client perhaps ? > I do only run 32 bit Gentoo Linux (both at host and as user mode linux client). FWIW in this particular test case I run both an NFS service and a NFS client software at the same UML image do find a reliable rest case to reproduce this hang/cpu burner of one of the linux processes at the host : tfoerste@n22 ~ $ sudo gdb /home/tfoerste/devel/linux/linux 23921 -n -batch -ex bt 0x08298edc in radix_tree_next_chunk (root=0x14, iter=0x46cc7c60, flags=12) at lib/radix-tree.c:770 770 if (node->slots[offset]) #0 0x08298edc in radix_tree_next_chunk (root=0x14, iter=0x46cc7c60, flags=12) at lib/radix-tree.c:770 #1 0x080cc11e in find_get_pages (mapping=0x46ef9b00, start=0, nr_pages=14, pages=0xc) at mm/filemap.c:844 #2 0x080d5c8a in pagevec_lookup (pvec=0x46cc7cc4, mapping=0x14, start=20, nr_pages=20) at mm/swap.c:914 #3 0x080d607a in truncate_inode_pages_range (mapping=0x46ef9b00, lstart=0, lend=-1) at mm/truncate.c:241 #4 0x080d641f in truncate_inode_pages (mapping=0x14, lstart=51539607572) at mm/truncate.c:358 #5 0x08260818 in hostfs_evict_inode (inode=0x46ef9a48) at fs/hostfs/hostfs_kern.c:242 #6 0x0811a8af in evict (inode=0x46ef9a48) at fs/inode.c:549 #7 0x0811b28d in iput_final (inode=<optimized out>) at fs/inode.c:1391 #8 iput (inode=0x46ef9a48) at fs/inode.c:1409 #9 0x08117628 in dentry_iput (dentry=<optimized out>) at fs/dcache.c:331 #10 d_kill (dentry=0x4915d6e0, parent=0x49171dc0) at fs/dcache.c:477 #11 0x08118048 in dentry_kill (dentry=<optimized out>, unlock_on_failure=<optimized out>) at fs/dcache.c:586 #12 dput (dentry=0x4915d6e0) at fs/dcache.c:641 #13 0x081048e3 in __fput (file=0x46cfe900) at fs/file_table.c:264 #14 0x0810494b in ____fput (work=0x46cfe900) at fs/file_table.c:282 #15 0x08094496 in task_work_run () at kernel/task_work.c:123 #16 0x0807efd2 in exit_task_work (task=<optimized out>) at include/linux/task_work.h:21 #17 do_exit (code=1213106688) at kernel/exit.c:787 #18 0x0807f5dd in do_group_exit (exit_code=0) at kernel/exit.c:920 #19 0x0807f649 in SYSC_exit_group (error_code=<optimized out>) at kernel/exit.c:931 #20 SyS_exit_group (error_code=0) at kernel/exit.c:929 #21 0x08062984 in handle_syscall (r=0x46f493d4) at arch/um/kernel/skas/syscall.c:35 #22 0x08074fb5 in handle_trap (local_using_sysemu=<optimized out>, regs=<optimized out>, pid=<optimized out>) at arch/um/os-Linux/skas/process.c:198 #23 userspace (regs=0x46f493d4) at arch/um/os-Linux/skas/process.c:431 #24 0x0805f750 in fork_handler () at arch/um/kernel/process.c:160 #25 0x5a5a5a5a in ?? () -- MfG/Sincerely Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- To unsubscribe from this list: send the line "unsubscribe trinity" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
