[DRBD-user] SLES9 .244 drbd 8.2.0 kernel oops

[Andre Konopka]

Hi,

as the previous version, drbd doesn't compile out of the box on 
SLES9.(kzmalloc problem)

I inserted the KZALLOC stuff from wrappers in cn_queue.c (as Lars 
recommended for 8.0.6)

#ifdef NEED_BACKPORT_OF_KZALLOC

static inline void *kzalloc(size_t size, int flags)
{
         void *rv = kmalloc(size,flags);
         if(rv) memset(rv,0,size);

         return rv;
}

#endif

and then it compiles perfectly.



Here comes my drbd.conf

global {
     usage-count no;
}
common {
   syncer { rate 50M; }
}
resource a1 {
  protocol C;
   startup { wfc-timeout 0; degr-wfc-timeout 120; }
   disk    { on-io-error detach; }
   net     { timeout 60; connect-int 10; ping-int 10;
             max-buffers 2048; max-epoch-size 2048; }
   on pdxrs001 {
     device /dev/drbd0;
     disk /dev/vgadc/lvol1;
     address 149.221.248.27:7790;
     flexible-meta-disk /dev/vgadc/drbdmeta-lvol1;
   }
   on pdxrs002 {
     device /dev/drbd0;
     disk /dev/vgadc/lvol1;
     address 149.221.248.29:7790;
     flexible-meta-disk /dev/vgadc/drbdmeta-lvol1;
   }
}


I did the following steps to initialize my drbd disk...

lvcreate -L 5G -n lvol1 /dev/vgadc
lvcreate -L 4M -n drbdmeta-lvol1 vgadc

modprobe drbd
drbdadm create-md a1
drbdadm up a1

drbdadm state a1
Secondary/Unknown


After entering

drbadm down a1

I saw the following oops in the logfile

Oct 29 12:25:24 pdxrs001 kernel: drbd0: No usable activity log found.
Oct 29 12:25:24 pdxrs001 kernel: drbd1: No usable activity log found.
Oct 29 12:25:39 pdxrs001 kernel: drbd0: Discarding network configuration.
Oct 29 12:25:39 pdxrs001 kernel: drbd0: tl_clear()
Oct 29 12:25:39 pdxrs001 kernel: Unable to handle kernel NULL pointer 
dereference at 0000000000000000 RIP:
Oct 29 12:25:39 pdxrs001 kernel: 
<ffffffffa0232877>{:drbd:drbd_disconnect+1335}
Oct 29 12:25:39 pdxrs001 kernel: PML4 39fa6067 PGD 38352067 PMD 0
Oct 29 12:25:39 pdxrs001 kernel: Oops: 0000 [1] SMP
Oct 29 12:25:39 pdxrs001 kernel: CPU 0
Oct 29 12:25:39 pdxrs001 kernel: Pid: 7404, comm: drbd0_receiver 
Tainted: G   U   (2.6.5-7.244-smp )
Oct 29 12:25:39 pdxrs001 kernel: RIP: 0010:[<ffffffffa0232877>] 
<ffffffffa0232877>{:drbd:drbd_disconnect+1335}
Oct 29 12:25:39 pdxrs001 kernel: RSP: 0018:0000010034393e38  EFLAGS: 
00010212
Oct 29 12:25:39 pdxrs001 kernel: RAX: 0000000000000010 RBX: 
0000000000000000 RCX: 000001000000c000
Oct 29 12:25:39 pdxrs001 kernel: RDX: 0000000000197a71 RSI: 
000000000000774c RDI: 000001003fe52080
Oct 29 12:25:39 pdxrs001 kernel: RBP: 000001003516e800 R08: 
0000000000000036 R09: 0000000000000000
Oct 29 12:25:39 pdxrs001 kernel: R10: 00000000ffffffff R11: 
0000000000000000 R12: 000000000000c812
Oct 29 12:25:39 pdxrs001 kernel: R13: 000001003516eb30 R14: 
000001003516ed28 R15: 000001003516ecf8
Oct 29 12:25:39 pdxrs001 kernel: FS:  0000000000000000(0000) 
GS:ffffffff8057cb80(0000) knlGS:0000000000000000
Oct 29 12:25:39 pdxrs001 kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 
000000008005003b
Oct 29 12:25:39 pdxrs001 kernel: CR2: 0000000000000000 CR3: 
0000000000101000 CR4: 00000000000006e0
Oct 29 12:25:39 pdxrs001 kernel: Process drbd0_receiver (pid: 7404, 
threadinfo 0000010034392000, task 00000100390ca3e0)
Oct 29 12:25:39 pdxrs001 kernel: Stack: 0000010034393e48 
000001003516ed08 0000000000000000 0000000000000206
Oct 29 12:25:39 pdxrs001 kernel:        0000000000000000 
00000100390ca3e0 ffffffff8013d3e0 0000010034393ea0
Oct 29 12:25:39 pdxrs001 kernel:        0000010034393ea0 000001003b34b6d0
Oct 29 12:25:39 pdxrs001 kernel: Call 
Trace:<ffffffff8013d3e0>{autoremove_wake_function+0} 
<ffffffff8013d3e0>{autoremove_wake_function+0}
Oct 29 12:25:39 pdxrs001 kernel: 
<ffffffffa022b950>{:drbd:w_prev_work_done+0} 
<ffffffffa0232aa8>{:drbd:drbdd_init+232}
Oct 29 12:25:39 pdxrs001 kernel: 
<ffffffffa023f0f7>{:drbd:drbd_thread_setup+151} 
<ffffffff801111b7>{child_rip+8}
Oct 29 12:25:39 pdxrs001 kernel: 
<ffffffffa023f060>{:drbd:drbd_thread_setup+0} 
<ffffffff801111af>{child_rip+0}
Oct 29 12:25:39 pdxrs001 kernel:
Oct 29 12:25:39 pdxrs001 kernel:
Oct 29 12:25:39 pdxrs001 kernel: Code: 48 8b 3b e8 c1 9f ff df 48 89 df 
e8 79 b8 f3 df 48 8b 7d 08
Oct 29 12:25:39 pdxrs001 kernel: RIP 
<ffffffffa0232877>{:drbd:drbd_disconnect+1335} RSP <0000010034393e38>
Oct 29 12:25:39 pdxrs001 kernel: CR2: 0000000000000000
~ 

~

on the shell the command respondend with


Child process does not terminate!
Exiting.
pdxrs001:/usr/src/drbd-8.2.0/drbd #
pdxrs001:/usr/src/drbd-8.2.0/drbd #
pdxrs001:/usr/src/drbd-8.2.0/drbd # No response from the DRBD driver! Is 
the module loaded?
Unconfigured


Any idea?



Best regards


Andre