* Re: 3.1-rc4: CIFS VFS: Received no data, expecting 4 [not found] ` <alpine.DEB.2.02.1109181258480.8689-0qmrozcXWo8bm2hyYBkBBg@public.gmane.org> @ 2011-09-21 11:24 ` Suresh Jayaraman [not found] ` <4E79C958.7080702-IBi9RG/b67k@public.gmane.org> 0 siblings, 1 reply; 4+ messages in thread From: Suresh Jayaraman @ 2011-09-21 11:24 UTC (permalink / raw) To: Justin Piszcz; +Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA, linux-cifs Adding linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org to Cc. On 09/18/2011 10:29 PM, Justin Piszcz wrote: > Hello, > > What does this mean and why does it occur? This error seems to occur when we try to read from a socket and actually read no data. Not sure when this would occur. > (mounted a Windows 7 share) > > [ 1090.606501] CIFS VFS: Received no data, expecting 4 > [ 1120.575675] CIFS VFS: Received no data, expecting 4 > [ 1150.544783] CIFS VFS: Received no data, expecting 4 > [ 1180.513925] CIFS VFS: Received no data, expecting 4 > [ 1210.483044] CIFS VFS: Received no data, expecting 4 > [ 1240.452187] CIFS VFS: Received no data, expecting 4 > [ 1270.421345] CIFS VFS: Received no data, expecting 4 > [ 1300.390432] CIFS VFS: Received no data, expecting 4 > [ 1330.359595] CIFS VFS: Received no data, expecting 4 > [ 1360.328755] CIFS VFS: Received no data, expecting 4 > [ 1390.283901] CIFS VFS: Received no data, expecting 4 > [ 1420.249492] CIFS VFS: Received no data, expecting 4 > [ 1450.218690] CIFS VFS: Received no data, expecting 4 > [ 1480.187842] CIFS VFS: Received no data, expecting 4 > [ 1510.156925] CIFS VFS: Received no data, expecting 4 > [ 1540.126080] CIFS VFS: Received no data, expecting 4 > [ 1570.095264] CIFS VFS: Received no data, expecting 4 > [ 1600.064381] CIFS VFS: Received no data, expecting 4 > [ 1630.033567] CIFS VFS: Received no data, expecting 4 > [ 1660.002595] CIFS VFS: Received no data, expecting 4 > [ 1689.971796] CIFS VFS: Received no data, expecting 4 > [ 1719.940916] CIFS VFS: Received no data, expecting 4 > [ 1749.910064] CIFS VFS: Received no data, expecting 4 > [ 1779.879160] CIFS VFS: Received no data, expecting 4 > [ 1809.848347] CIFS VFS: Received no data, expecting 4 > [ 1839.817414] CIFS VFS: Received no data, expecting 4 > [ 1869.786612] CIFS VFS: Received no data, expecting 4 > [ 1899.755742] CIFS VFS: Received no data, expecting 4 > [ 1929.724890] CIFS VFS: Received no data, expecting 4 > [ 1959.694018] CIFS VFS: Received no data, expecting 4 > [ 1989.663177] CIFS VFS: Received no data, expecting 4 > [ 2019.632306] CIFS VFS: Received no data, expecting 4 > [ 2049.601480] CIFS VFS: Received no data, expecting 4 > > Justin. > -Suresh ^ permalink raw reply [flat|nested] 4+ messages in thread
[parent not found: <4E79C958.7080702-IBi9RG/b67k@public.gmane.org>]
* Re: 3.1-rc4: CIFS VFS: Received no data, expecting 4 [not found] ` <4E79C958.7080702-IBi9RG/b67k@public.gmane.org> @ 2011-09-21 11:57 ` Jeff Layton [not found] ` <20110921075730.74c3b512-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org> 0 siblings, 1 reply; 4+ messages in thread From: Jeff Layton @ 2011-09-21 11:57 UTC (permalink / raw) To: Suresh Jayaraman Cc: Justin Piszcz, linux-kernel-u79uwXL29TY76Z2rM5mHXA, linux-cifs On Wed, 21 Sep 2011 16:54:08 +0530 Suresh Jayaraman <sjayaraman-IBi9RG/b67k@public.gmane.org> wrote: > Adding linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org to Cc. > > On 09/18/2011 10:29 PM, Justin Piszcz wrote: > > Hello, > > > > What does this mean and why does it occur? > > This error seems to occur when we try to read from a socket and actually > read no data. Not sure when this would occur. > It would be nice to know what was returned by kernel_recvmsg here. Was it "0" or an error code of some kind? > > (mounted a Windows 7 share) > > > > [ 1090.606501] CIFS VFS: Received no data, expecting 4 > > [ 1120.575675] CIFS VFS: Received no data, expecting 4 > > [ 1150.544783] CIFS VFS: Received no data, expecting 4 > > [ 1180.513925] CIFS VFS: Received no data, expecting 4 > > [ 1210.483044] CIFS VFS: Received no data, expecting 4 > > [ 1240.452187] CIFS VFS: Received no data, expecting 4 > > [ 1270.421345] CIFS VFS: Received no data, expecting 4 > > [ 1300.390432] CIFS VFS: Received no data, expecting 4 > > [ 1330.359595] CIFS VFS: Received no data, expecting 4 > > [ 1360.328755] CIFS VFS: Received no data, expecting 4 > > [ 1390.283901] CIFS VFS: Received no data, expecting 4 > > [ 1420.249492] CIFS VFS: Received no data, expecting 4 > > [ 1450.218690] CIFS VFS: Received no data, expecting 4 > > [ 1480.187842] CIFS VFS: Received no data, expecting 4 > > [ 1510.156925] CIFS VFS: Received no data, expecting 4 > > [ 1540.126080] CIFS VFS: Received no data, expecting 4 > > [ 1570.095264] CIFS VFS: Received no data, expecting 4 > > [ 1600.064381] CIFS VFS: Received no data, expecting 4 > > [ 1630.033567] CIFS VFS: Received no data, expecting 4 > > [ 1660.002595] CIFS VFS: Received no data, expecting 4 > > [ 1689.971796] CIFS VFS: Received no data, expecting 4 > > [ 1719.940916] CIFS VFS: Received no data, expecting 4 > > [ 1749.910064] CIFS VFS: Received no data, expecting 4 > > [ 1779.879160] CIFS VFS: Received no data, expecting 4 > > [ 1809.848347] CIFS VFS: Received no data, expecting 4 > > [ 1839.817414] CIFS VFS: Received no data, expecting 4 > > [ 1869.786612] CIFS VFS: Received no data, expecting 4 > > [ 1899.755742] CIFS VFS: Received no data, expecting 4 > > [ 1929.724890] CIFS VFS: Received no data, expecting 4 > > [ 1959.694018] CIFS VFS: Received no data, expecting 4 > > [ 1989.663177] CIFS VFS: Received no data, expecting 4 > > [ 2019.632306] CIFS VFS: Received no data, expecting 4 > > [ 2049.601480] CIFS VFS: Received no data, expecting 4 > > > > Justin. > > > > -Suresh > -- > To unsubscribe from this list: send the line "unsubscribe linux-cifs" in > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Jeff Layton <jlayton-vpEMnDpepFuMZCB2o+C8xQ@public.gmane.org> ^ permalink raw reply [flat|nested] 4+ messages in thread
[parent not found: <20110921075730.74c3b512-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org>]
* Re: 3.1-rc4: CIFS VFS: Received no data, expecting 4 [not found] ` <20110921075730.74c3b512-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org> @ 2011-09-21 11:56 ` Justin Piszcz [not found] ` <alpine.DEB.2.02.1109210756390.31360-0qmrozcXWo8bm2hyYBkBBg@public.gmane.org> 0 siblings, 1 reply; 4+ messages in thread From: Justin Piszcz @ 2011-09-21 11:56 UTC (permalink / raw) To: Jeff Layton Cc: Suresh Jayaraman, linux-kernel-u79uwXL29TY76Z2rM5mHXA, linux-cifs On Wed, 21 Sep 2011, Jeff Layton wrote: > On Wed, 21 Sep 2011 16:54:08 +0530 > Suresh Jayaraman <sjayaraman-IBi9RG/b67k@public.gmane.org> wrote: > >> Adding linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org to Cc. >> >> On 09/18/2011 10:29 PM, Justin Piszcz wrote: >>> Hello, >>> >>> What does this mean and why does it occur? >> >> This error seems to occur when we try to read from a socket and actually >> read no data. Not sure when this would occur. >> > > It would be nice to know what was returned by kernel_recvmsg here. Was > it "0" or an error code of some kind? Hi, It seemed to start like that: Sep 18 12:02:52 p34 kernel: [ 71.039405] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory Sep 18 12:02:52 p34 kernel: [ 71.039970] NFSD: starting 90-second grace period Sep 18 12:17:06 p34 kernel: [ 923.377483] CIFS VFS: Received no data, expecting 4 Sep 18 12:17:23 p34 kernel: [ 940.991731] [drm] nouveau 0000:04:00.0: Setting dpms mode 3 on tmds encoder (output 1) Sep 18 12:18:23 p34 kernel: [ 1000.699094] CIFS VFS: Received no data, expecting 4 Sep 18 12:18:53 p34 kernel: [ 1030.668222] CIFS VFS: Received no data, expecting 4 Sep 18 12:19:23 p34 kernel: [ 1060.637386] CIFS VFS: Received no data, expecting 4 Sep 18 12:19:53 p34 kernel: [ 1090.606501] CIFS VFS: Received no data, expecting 4 Sep 18 12:20:23 p34 kernel: [ 1120.575675] CIFS VFS: Received no data, expecting 4 Sep 18 12:20:53 p34 kernel: [ 1150.544783] CIFS VFS: Received no data, expecting 4 Sep 18 12:21:23 p34 kernel: [ 1180.513925] CIFS VFS: Received no data, expecting 4 Sep 18 12:21:53 p34 kernel: [ 1210.483044] CIFS VFS: Received no data, expecting 4 Sep 18 12:22:23 p34 kernel: [ 1240.452187] CIFS VFS: Received no data, expecting 4 Sep 18 12:22:53 p34 kernel: [ 1270.421345] CIFS VFS: Received no data, expecting 4 Sep 18 12:23:23 p34 kernel: [ 1300.390432] CIFS VFS: Received no data, expecting 4 Sep 18 12:23:53 p34 kernel: [ 1330.359595] CIFS VFS: Received no data, expecting 4 Sep 18 12:24:23 p34 kernel: [ 1360.328755] CIFS VFS: Received no data, expecting 4 Sep 18 12:24:53 p34 kernel: [ 1390.283901] CIFS VFS: Received no data, expecting 4 Sep 18 12:25:23 p34 kernel: [ 1420.249492] CIFS VFS: Received no data, expecting 4 Sep 18 12:25:53 p34 kernel: [ 1450.218690] CIFS VFS: Received no data, expecting 4 Sep 18 12:26:23 p34 kernel: [ 1480.187842] CIFS VFS: Received no data, expecting 4 Sep 18 12:26:53 p34 kernel: [ 1510.156925] CIFS VFS: Received no data, expecting 4 Sep 18 12:27:23 p34 kernel: [ 1540.126080] CIFS VFS: Received no data, expecting 4 Sep 18 12:27:54 p34 kernel: [ 1570.095264] CIFS VFS: Received no data, expecting 4 Justin. ^ permalink raw reply [flat|nested] 4+ messages in thread
[parent not found: <alpine.DEB.2.02.1109210756390.31360-0qmrozcXWo8bm2hyYBkBBg@public.gmane.org>]
* Re: 3.1-rc4: CIFS VFS: Received no data, expecting 4 [not found] ` <alpine.DEB.2.02.1109210756390.31360-0qmrozcXWo8bm2hyYBkBBg@public.gmane.org> @ 2011-09-21 13:15 ` Jeff Layton 0 siblings, 0 replies; 4+ messages in thread From: Jeff Layton @ 2011-09-21 13:15 UTC (permalink / raw) To: Justin Piszcz Cc: Suresh Jayaraman, linux-kernel-u79uwXL29TY76Z2rM5mHXA, linux-cifs On Wed, 21 Sep 2011 07:56:57 -0400 (EDT) Justin Piszcz <jpiszcz-BP4nVm5VUdNhbmWW9KSYcQ@public.gmane.org> wrote: > > > On Wed, 21 Sep 2011, Jeff Layton wrote: > > > On Wed, 21 Sep 2011 16:54:08 +0530 > > Suresh Jayaraman <sjayaraman-IBi9RG/b67k@public.gmane.org> wrote: > > > >> Adding linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org to Cc. > >> > >> On 09/18/2011 10:29 PM, Justin Piszcz wrote: > >>> Hello, > >>> > >>> What does this mean and why does it occur? > >> > >> This error seems to occur when we try to read from a socket and actually > >> read no data. Not sure when this would occur. > >> > > > > It would be nice to know what was returned by kernel_recvmsg here. Was > > it "0" or an error code of some kind? > > Hi, > > It seemed to start like that: > > Sep 18 12:02:52 p34 kernel: [ 71.039405] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory > Sep 18 12:02:52 p34 kernel: [ 71.039970] NFSD: starting 90-second grace period > Sep 18 12:17:06 p34 kernel: [ 923.377483] CIFS VFS: Received no data, expecting 4 > Sep 18 12:17:23 p34 kernel: [ 940.991731] [drm] nouveau 0000:04:00.0: Setting dpms mode 3 on tmds encoder (output 1) > Sep 18 12:18:23 p34 kernel: [ 1000.699094] CIFS VFS: Received no data, expecting 4 > Sep 18 12:18:53 p34 kernel: [ 1030.668222] CIFS VFS: Received no data, expecting 4 > Sep 18 12:19:23 p34 kernel: [ 1060.637386] CIFS VFS: Received no data, expecting 4 > Sep 18 12:19:53 p34 kernel: [ 1090.606501] CIFS VFS: Received no data, expecting 4 > Sep 18 12:20:23 p34 kernel: [ 1120.575675] CIFS VFS: Received no data, expecting 4 > Sep 18 12:20:53 p34 kernel: [ 1150.544783] CIFS VFS: Received no data, expecting 4 > Sep 18 12:21:23 p34 kernel: [ 1180.513925] CIFS VFS: Received no data, expecting 4 > Sep 18 12:21:53 p34 kernel: [ 1210.483044] CIFS VFS: Received no data, expecting 4 > Sep 18 12:22:23 p34 kernel: [ 1240.452187] CIFS VFS: Received no data, expecting 4 > Sep 18 12:22:53 p34 kernel: [ 1270.421345] CIFS VFS: Received no data, expecting 4 > Sep 18 12:23:23 p34 kernel: [ 1300.390432] CIFS VFS: Received no data, expecting 4 > Sep 18 12:23:53 p34 kernel: [ 1330.359595] CIFS VFS: Received no data, expecting 4 > Sep 18 12:24:23 p34 kernel: [ 1360.328755] CIFS VFS: Received no data, expecting 4 > Sep 18 12:24:53 p34 kernel: [ 1390.283901] CIFS VFS: Received no data, expecting 4 > Sep 18 12:25:23 p34 kernel: [ 1420.249492] CIFS VFS: Received no data, expecting 4 > Sep 18 12:25:53 p34 kernel: [ 1450.218690] CIFS VFS: Received no data, expecting 4 > Sep 18 12:26:23 p34 kernel: [ 1480.187842] CIFS VFS: Received no data, expecting 4 > Sep 18 12:26:53 p34 kernel: [ 1510.156925] CIFS VFS: Received no data, expecting 4 > Sep 18 12:27:23 p34 kernel: [ 1540.126080] CIFS VFS: Received no data, expecting 4 > Sep 18 12:27:54 p34 kernel: [ 1570.095264] CIFS VFS: Received no data, expecting 4 > Given that this is happening every 30s, I'd suspect that the server is disconnecting an idle socket and the client is continually reconnecting it. That's probably causing it to return an error on the kernel_recvmsg call. I have a patch series queued for 3.2 that makes readpages asynchronous and breaks the 16k barrier for reads. As part of that, it also turns this into a debug message and tells you what the call returned. http://git.samba.org/?p=jlayton/linux.git;a=shortlog;h=refs/heads/cifs-3.2 You may want to play with that... -- Jeff Layton <jlayton-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org> ^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] ` <alpine.DEB.2.02.1109181258480.8689-0qmrozcXWo8bm2hyYBkBBg@public.gmane.org>
2011-09-21 11:24 ` 3.1-rc4: CIFS VFS: Received no data, expecting 4 Suresh Jayaraman
[not found] ` <4E79C958.7080702-IBi9RG/b67k@public.gmane.org>
2011-09-21 11:57 ` Jeff Layton
[not found] ` <20110921075730.74c3b512-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org>
2011-09-21 11:56 ` Justin Piszcz
[not found] ` <alpine.DEB.2.02.1109210756390.31360-0qmrozcXWo8bm2hyYBkBBg@public.gmane.org>
2011-09-21 13:15 ` Jeff Layton
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