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SubjectRe: Restarting knfsd
Date
From
> 
> "H.J. Lu" wrote:
>
> > >
> > > Hello, I've recently been using knfsd on some Linux servers I administer. On some HPs that I administer if the server goes down and comes back up, the clients act as if nothing has happened.
> > >
> > > On the linux machines I administer if the server goes down, then I need to tell all the clients to remount the exports off the server, otherwise the NFS file handle goes stale.
> > >
> > > Is there a way to change this behavior?
> > >
> >
> > Apply the kernel patches recommended in knfsd 1.4.6.
> >
>
> I switched to the 2.2.10-ac12 version on linux that has said patches installed.
>
> I still have some problems though:
> a) Lockd zombies on me sometimes, it gives the following oops:
> [root@saturn /root]# Unable to handle kernel NULL pointer dereference at virtual address 0000000c
> current->tss.cr3 = 00101000, %cr3 = 00101000
> *pde = 00000000
> Oops: 0002
> CPU: 0
> EIP: 0010:[<c0197698>]
> EFLAGS: 00010202
> eax: 00000004 ebx: cb93bea0 ecx: cb93000a edx: cb736800
> esi: c016853c edi: fffffff4 ebp: 00000004 esp: cb73bde8
> ds: 0018 es: 0018 ss: 0018
> Process lockd (pid: 860, process nr: 79, stackpage=cb73b000)
> Stack: cb93bea0 cb93be00 cb736800 00000004 0000000c 00000002 fffffeff ffffffff
> 00000015 cb93bf40 c0234790 cb93bf40 cb93be1c c01979ff c0197a2c cd17d980
> cd17d980 c0197382 cb93bf40 cb93bf40 c019305f 00000001 cb93bf40 cb73a000
> Call Trace: [<c01979ff>] [<c0197a2c>] [<c0197382>] [<c019305f>] [<c01665c0>] [<c0165b7d>] [<c016853c>]
> [<c016851c>] [<c016853c>] [<c0168062>] [<c016801c>] [<c0110940>] [<c0106666>] [<c0169248>] [<c0169299>]
> [<c019849d>] [<c016688c>] [<c0198d2c>] [<c0166a7a>] [<c0106513>]
> Code: 66 ff 40 08 8b 4b 1c 8b 43 14 8b 50 18 a1 74 dc 22 c0 03 42
>
> b) Sometimes when attempting a mount from a remote machine, nfsd seems to zombie. Specifically the load jumps to the number of threads of nfsd that I had running. (Typically 16)
>
> Any ideas?
> (am I mailing this to the right person?)
>


I was told NFS in 2.2.10-ac12 was busted.


--
H.J. Lu (hjl@gnu.org)

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