[Bug 508930] [NEW] CIFS mount is offline every x minutes/seconds

[Jean-Louis Dupond]

Public bug reported:

Binary package hint: samba

Situation:

Mounting a LOCAL Win XP PC share with:
mount //LOCAL-NETWORK-PC/DATA /mnt/DATA

Then we start playing music from /mnt/DATA, everything runs fine, only
every x minutes/seconds it seems to give a skip.

Pulseaudio tells me:
D: protocol-native.c: Underrun on 'Music File', 0 bytes in queue.
D: protocol-native.c: Requesting rewind due to end of underrun.

Lets enable CIFS debugging:
echo 3 > /proc/fs/cifs/cifsFYI

Then at every underrun it gives:
[48601.045432]  /build/buildd/linux-2.6.31/fs/cifs/file.c: CIFS VFS: in cifs_read as Xid: 722374 with uid: 1000
[48601.045434]  /build/buildd/linux-2.6.31/fs/cifs/cifssmb.c: Reading 2048 bytes on fid 49163
[48601.045437]  /build/buildd/linux-2.6.31/fs/cifs/transport.c: For smb_command 46
[48601.045439]  /build/buildd/linux-2.6.31/fs/cifs/transport.c: Sending smb:  total_len 63
[48601.045902]  /build/buildd/linux-2.6.31/fs/cifs/connect.c: rfc1002 length 0x840
[48601.045971]  /build/buildd/linux-2.6.31/fs/cifs/cifssmb.c: Reading 2048 bytes on fid 49163
[48601.045983]  /build/buildd/linux-2.6.31/fs/cifs/transport.c: For smb_command 46
[48601.045985]  /build/buildd/linux-2.6.31/fs/cifs/transport.c: Sending smb:  total_len 63
[48601.046598]  /build/buildd/linux-2.6.31/fs/cifs/connect.c: rfc1002 length 0x840
[48601.046670]  /build/buildd/linux-2.6.31/fs/cifs/file.c: CIFS VFS: leaving cifs_read (xid = 722374) rc = 0
[48601.046681]  /build/buildd/linux-2.6.31/fs/cifs/file.c: Bytes read 4096
[48601.046684]  /build/buildd/linux-2.6.31/fs/cifs/file.c: CIFS VFS: leaving cifs_readpage (xid = 722373) rc = 0
[48601.046718]  /build/buildd/linux-2.6.31/fs/cifs/file.c: CIFS VFS: in cifs_readpages as Xid: 722375 with uid: 1000
[48601.046721]  /build/buildd/linux-2.6.31/fs/cifs/cifssmb.c: Reading 0 bytes on fid 49163
[48601.046724]  /build/buildd/linux-2.6.31/fs/cifs/transport.c: For smb_command 46
[48601.046726]  /build/buildd/linux-2.6.31/fs/cifs/transport.c: Sending smb:  total_len 63
[48601.047140]  /build/buildd/linux-2.6.31/fs/cifs/connect.c: rfc1002 length 0x3f
[48601.047148]  /build/buildd/linux-2.6.31/fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release
[48601.047151]  /build/buildd/linux-2.6.31/fs/cifs/file.c: No bytes read (0) at offset 65519616 . Cleaning remaining pages from readahead list
[48601.047154]  /build/buildd/linux-2.6.31/fs/cifs/file.c: CIFS VFS: leaving cifs_readpages (xid = 722375) rc = 0
[48601.047166]  /build/buildd/linux-2.6.31/fs/cifs/file.c: CIFS VFS: in cifs_readpage as Xid: 722376 with uid: 1000
[48601.047169]  /build/buildd/linux-2.6.31/fs/cifs/file.c: readpage ffffea000029f8c8 at offset 65519616 0x3e7c000


Full output in attachment

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: cifs samba timeout underrun

-- 
CIFS mount is offline every x minutes/seconds
https://bugs.launchpad.net/bugs/508930
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