Bug 3252 - When Connection Lost System Hangs
When Connection Lost System Hangs
Product: Samba 3.0
Classification: Unclassified
Component: Client Tools
All Linux
: P3 normal
: none
Assigned To: Samba Bugzilla Account
Samba QA Contact
Depends on:
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Reported: 2005-11-09 14:51 UTC by Blake
Modified: 2005-11-14 12:01 UTC (History)
0 users

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Description Blake 2005-11-09 14:51:25 UTC
I frequently mount directories with samba shares with my samba client. When the
share isn't available anymore even for a split second my system basically
crashes and I have to restart all services and sometimes reboot. I think that if
a network share goes down and comes back up the client should be able to
reconnect and remount the share without crashing.
Comment 1 Gerald (Jerry) Carter 2005-11-14 09:03:24 UTC
If this is the linux CIFS client, then you ned to contact 
Steve French on the linux-cifs-client@samba.org mailing list.
If this is smbfs, we're not maintaining that currently.
Comment 2 Steve French 2005-11-14 12:01:49 UTC
if you 
   mount -t cifs //server/share /mnt ...
then crash the server (killall smbd or net session \\clientipaddress /delete)
the Linux cifs client will reconnect:
a) the tcp session
b) the smb session running over the tcp session
c) the "tree connection" (mount to share) over the smb session
d) the open files on the mount
e) (and even rewrite cached data in many cases - as long as the application has
not mmapped and page faulted on the dead server)

It will not replay byte range lock requests (yet)

The legacy smbfs client
    mount -t smbfs //server/share /mnt ....
tries to reconnect and often does reconnect the tcp and smb sessions and tree
connection (mount) but does not do a very good job on the rest.  smbfs is not
supported as development has moved to its replacement

There are other samba client tools of course ... in particular 
    "smbclient //server/share"
which has an ftp like interface.  I don't remember whether it supports
reconnection or not.  That tool and the cifs vfs mentioned at the time are