[ ssic-linux-Bugs-1990728 ] Sometimes onnode fails with error 95

Bugs item #1990728, was opened at 2008-06-11 03:46
Message generated for change (Comment added) made by nobody
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Category: Filesystem
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: John Hughes (hughesj)
Assigned to: Nobody/Anonymous (nobody)
Summary: Sometimes onnode fails with error 95

Initial Comment:
$ onnode 8 pwd
 can't execute pwd, errno=95.

In the syslog on node 8 I find:

rmtfb_getcli_id: non-exportable filesystem (devpts)

Weird.

When a node is in this state it stays like that until it's rebooted.

Currently being seen on my 2.6.12 based system.  Don't know whether same problem exists on 2.6.11


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Comment By: Nobody/Anonymous (nobody)
Date: 2008-06-16 01:16

Message:
Logged In: NO 

Some more things happened to this cluster:

On a non-init node:

rmtfb_getcli_id: non-exportable filesystem (cfs)
rmtfb_getcli_id: non-exportable filesystem (cfs)
rmtfb_badops: stale client structure: f74079e0
rmtfb_badops: stale client structure: f74079e0
rmtfb_badops: stale client structure: f77aaba0

On the init node:

rmtfb_getcli_id: non-exportable filesystem (devpts)
Node 8 has gone down!!!
rmtfb_badops: stale client structure: d5ff3980
rmtfb_badops: stale client structure: d25a4520
nm_add_node: Node 8 added
Badness in kref_get at lib/kref.c:32
 [<c0107a3e>] dump_stack+0x1e/0x20
 [<c02b73d5>] kref_get+0x45/0x50
 [<c02b6949>] kobject_get+0x19/0x20
 [<c017c326>] cdev_get+0x36/0x70
 [<c017c611>] exact_lock+0x11/0x20
 [<c03362e6>] kobj_lookup+0x106/0x1b0
 [<c017c4b8>] chrdev_open+0x108/0x1a0
 [<c017080a>] dentry_open+0x17a/0x260
 [<c017068a>] filp_open+0x5a/0x60
 [<c0170ade>] sys_open+0x5e/0xa0
 [<c0106a41>] syscall_call+0x7/0xb
Badness in kref_get at lib/kref.c:32

Yow!


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Comment By: Roger Tsang (rogertsang)
Date: 2008-06-15 14:35

Message:
Logged In: YES 
user_id=1246761
Originator: NO

Haven't seen this on 2.6.11-ssi but could be a symptom of vproc_release()
bug 1842982.

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Comment By: John Hughes (hughesj)
Date: 2008-06-12 01:39

Message:
Logged In: YES 
user_id=166336
Originator: YES

So the code in rmtfb_getcli_id is:

[...]
        file = reop_make_file(path, flags, svr);
[...]
        if (file->private_data) {
                printk(KERN_ERR
                        "rmtfb_getcli_id: non-exportable filesystem
(%s)\n",
                        file->f_vfsmnt->mnt_sb->s_type->name);

"path" is presumably "/dev/pts/xxx".



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