Large writes on CIFS share hang server
Issue
- A large write operation over CIFS hangs the server.
- Observed the following errors in the /var/log/messages log:
Jul 14 16:24:05 example-uguu kernel: CIFS VFS: No response to cmd 47 mid 19707
Jul 14 16:24:05 example-uguu kernel: CIFS VFS: Write2 ret -11, wrote 0
Jul 14 16:24:06 example-uguu kernel: CIFS VFS: Write2 ret -11, wrote 0
Jul 14 16:34:53 example-uguu kernel: CIFS VFS: No response to cmd 47 mid 46551
Jul 14 16:34:53 example-uguu kernel: CIFS VFS: Write2 ret -11, wrote 0
Jul 14 16:34:53 example-uguu kernel: CIFS VFS: Write2 ret -11, wrote 0
Environment
- Red Hat Enterprise Linux 6
- samba-client-3.5.4-68.el6.x86_64
- samba-common-3.5.4-68.el6.x86_64
- samba-winbind-clients-3.5.4-68.el6.x86_64
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