Lock up issue

[GL Fournerat]

Mike.. you might try posting this problem on guinness-list at redhat.com too.

Gary

Mike Baptiste wrote:

> [Since samba-bugs has been shutdown, I'm posting this here...]
>
> I'm running RH 7.0 with both 2.2.16 and 2.4.2 kernels
> I've got the following samba packages installed:
>
> samba-client-2.0.7-21ssl
> samba-common-2.0.7-21ssl
>
> I have a Windows NT 4 server (SP6a) which stores many of my files since I
> use both Linux and Windows to access them (Linux on my desktop, Windows on
> my laptop)  I don't access the shares at the same time (my desktop is usuall
> yoff when I use my laptop and vice versa)
>
> I mount 2 shares off my NT box:
>
> smbmount //baptiste_srv/mike ~/ntsrv -o
> username=xxxx,uid=yyyyyyy,password=uuuuuuuu,rw
> smbmount //baptiste_srv/NT_Junk ~/mp3 -o
> username=xxxx,uid=yyyyyyy,password=uuuuuuuu,rw
>
> I've done this as both root and the user yyyyyyy
>
> Obviously, the mp3 share is just that - nothing but mp3's.  The first share
> stores common email and document files.
>
> I've found since I first put this system together that if I have 2
> applications accessing SMB shares (not necessarily the same one) at the same
> time, the samba subsystem locks up along with the applications.  It first
> happened at random it seemed when I had Netscape or Mozilla open (accessing
> my local mail files on the ntsrv share) and something else with an open
> document like Gnumeric or AbiWord.  It would lock the apps up.  Killing the
> parent process would leave defunt zombies that could NOT be killed.  Even
> root kill -9 would not work.
>
> The problem became more obvious when I started playing MP3s in the
> background with XMMS.  If I used my mail client or even opened/saved a file
> with gnumeric, it would SOMETIMES lock up.  Note it is not immediate.
> However, playing MP3s increases the frequency of the problem.  Note I use
> IMAP so I access my 'Local' email folders infrequently.  It appears to be
> some type of problem when 2 applications issue SMB calls at the same time.
>
> Once it freezes, the shares are dead.  Any application tryin gto access them
> (even 'df') will freeze when it gets to the SMB shares.
>
> The shares cannot be unmounted.  Durin gshutdown, I get errors from
> smb_request as the system tries to unmount the shares.  I get smb_request
> error=-512 setting invalid and then a few error=-3.
>
> It should be noted that sometimes during a shutdown when the shares are NOT
> forzen, I'll get error=-104 I believe though the shares to that point were
> functioning fine.
>
> When I've had just ONE applciation using a share - never had a problem.
> I've played MP3s for days straight - no problem.  But open another app
> accessing different files or even a different share and it doesn't take long
> for hte shares to lock.
>
> I know this is light on debug info - is there any tool or /proc file that
> might shed some light on this?  I can reproduce it fairly easily (just play
> MP3s and then do normal stuff :) )
>
> Anyone seen behavior like this?
>
> Mike Baptiste
> mike at baptistefamily.net
>
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