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More data. When I disconnect the IB connection on the server
(192.168.3.50@o2ib) I see, on<br>
the client:<br>
un 3 08:55:30 nasnu3 kernel: LustreError:
3634:0:(events.c:55:request_out_callback()) @@@ type 4, status -5
req@ffff8102109a3200 x602471/t0 o400-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a>
lens 128/128 ref 2 fl Rpc:N/0/0 rc 0/-22<br>
Jun 3 08:55:30 nasnu3 kernel: LustreError:
3634:0:(events.c:55:request_out_callback()) Skipped 2 previous similar
messages<br>
Jun 3 08:55:30 nasnu3 kernel: LustreError:
3660:0:(client.c:975:ptlrpc_expire_one_request()) @@@ network error
(sent at 1212497706, 24s ago) req@ffff8102109a3200 x602471/t0
o400-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a> lens 128/128 ref 1 fl Rpc:N/0/0
rc 0/-22<br>
Jun 3 08:55:30 nasnu3 kernel: LustreError:
3660:0:(client.c:975:ptlrpc_expire_one_request()) Skipped 1 previous
similar message<br>
Jun 3 08:55:30 nasnu3 kernel: LustreError: 166-1:
MGC192.168.3.50@o2ib: Connection to service MGS via nid
192.168.3.50@o2ib was lost; in progress operations using this service
will fail.<br>
Jun 3 08:56:21 nasnu3 kernel: LustreError:
3523:0:(events.c:55:request_out_callback()) @@@ type 4, status -113
req@ffff8101fd292800 x602474/t0 o250-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a>
lens 304/328 ref 2 fl Rpc:/0/0 rc 0/-22<br>
Jun 3 08:56:21 nasnu3 kernel: LustreError:
3661:0:(client.c:975:ptlrpc_expire_one_request()) @@@ network error
(sent at 1212497731, 50s ago) req@ffff8101fd292800 x602474/t0
o250-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a> lens 304/328 ref 1 fl Rpc:/0/0
rc 0/-22<br>
Jun 3 08:57:15 nasnu3 kernel: LustreError:
7061:0:(client.c:519:ptlrpc_import_delay_req()) @@@ IMP_INVALID
req@ffff81022d83aa00 x602487/t0 o101-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a>
lens 232/240 ref 1 fl Rpc:/0/0 rc 0/0<br>
Jun 3 08:57:15 nasnu3 kernel: LustreError:
7061:0:(client.c:519:ptlrpc_import_delay_req()) Skipped 1 previous
similar message<br>
<br>
<br>
With the IB connection gone, the disk test to the lustre directory
works and gives its usual 13 MB/s rate.<br>
<br>
Jun 3 08:57:36 nasnu3 kernel: LustreError:
3523:0:(events.c:55:request_out_callback()) @@@ type 4, status -113
req@ffff810191edfe00 x602481/t0 o250-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a>
lens 304/328 ref 1 fl Complete:E/0/0 rc -5/-22<br>
Jun 3 08:57:36 nasnu3 kernel: LustreError:
3661:0:(client.c:975:ptlrpc_expire_one_request()) @@@ network error
(sent at 1212497830, 26s ago) req@ffff810235f37e00 x602486/t0
o250-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a> lens 304/328 ref 1 fl Rpc:/0/0
rc 0/-22<br>
Jun 3 08:58:20 nasnu3 kernel: LustreError:
7061:0:(client.c:519:ptlrpc_import_delay_req()) @@@ IMP_INVALID
req@ffff810150cf4000 x602749/t0 o101-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a>
lens 232/240 ref 1 fl Rpc:/0/0 rc 0/0<br>
Jun 3 08:58:20 nasnu3 kernel: LustreError:
7061:0:(client.c:519:ptlrpc_import_delay_req()) Skipped 1 previous
similar message<br>
Jun 3 08:58:50 nasnu3 kernel: LustreError:
3523:0:(events.c:55:request_out_callback()) @@@ type 4, status -113
req@ffff8101c07c6600 x602748/t0 o250-><a class="moz-txt-link-abbreviated" href="mailto:MGS@MGC192.168.3.50@o2ib_0:26">MGS@MGC192.168.3.50@o2ib_0:26</a>
lens 304/328 ref 2 fl Rpc:/0/0 rc 0/-22<br>
Jun 3 08:58:50 nasnu3 kernel: LustreError:
3523:0:(events.c:55:request_out_callback()) Skipped 1 previous similar
message<br>
<br>
Reconnecting IB:<br>
Jun 3 08:59:15 nasnu3 kernel: Lustre: MGC192.168.3.50@o2ib:
Reactivating import<br>
Jun 3 08:59:15 nasnu3 kernel: Lustre: MGC192.168.3.50@o2ib: Connection
restored to service MGS using nid 192.168.3.50@o2ib.<br>
Jun 3 08:59:15 nasnu3 kernel: Lustre: Skipped 1 previous similar
message<br>
<br>
Thanks,<br>
murray<br>
<br>
Isaac Huang wrote:
<blockquote cite="mid20080603032858.GG1108@sun.com" type="cite">
<pre wrap="">On Mon, Jun 02, 2008 at 01:40:20PM -0400, Murray Smigel wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi,
I have built a simple lustre setup. MDS and OSS are both on a Centos5
machine using the red hat lustre modified kernel
2.6.18-8.1.14.el5_lustre.1.6.4.1 running OFED-1.3. Lustre is 1.6.4.3.
The client machine is Debian running the same kernel and OFED-1.3 and
lustre 1.6.4.3.
The MDT and OST are both single partitions on the the same disk (yes,
I know this is not optimal...)
The network uses Mellanox ConnectX HCAs running through a Voltaire
ISR2004 switch.
</pre>
</blockquote>
<pre wrap=""><!---->
What is you Lustre network configurations (i.e. lnet options)? If not
sure, what's the output of 'lctl list_nids' on the client and the
server?
Isaac
</pre>
<blockquote type="cite">
<pre wrap="">The basic RDMA setup seems to work in either direction:
murray@nasnu3:/slut$ ib_rdma_bw 192.168.3.50 (Lustre server)
5605: | port=18515 | ib_port=1 | size=65536 | tx_depth=100 |
iters=1000 | duplex=0 | cma=0 |
5605: Local address: LID 0x07, QPN 0x22004e, PSN 0x323aa6 RKey
0x1a002800 VAddr 0x002aaaaaad6000
5605: Remote address: LID 0x05, QPN 0x8004f, PSN 0x67c28c, RKey
0x8002800 VAddr 0x002aaaab705000
5605: Bandwidth peak (#0 to #985): 1332.53 MB/sec
5605: Bandwidth average: 1332.47 MB/sec
5605: Service Demand peak (#0 to #985): 1462 cycles/KB
5605: Service Demand Avg : 1462 cycles/KB
[murray@lusty bin]$ ib_rdma_bw 192.168.3.30 (Lustre client)
3845: | port=18515 | ib_port=1 | size=65536 | tx_depth=100 |
iters=1000 | duplex=0 | cma=0 |
3845: Local address: LID 0x05, QPN 0xa004f, PSN 0x4f4712 RKey
0xa002800 VAddr 0x002aaaab705000
3845: Remote address: LID 0x07, QPN 0x24004e, PSN 0xa740c1, RKey
0x1c002800 VAddr 0x002aaaaaad6000
3845: Bandwidth peak (#0 to #956): 1533.5 MB/sec
3845: Bandwidth average: 1533.43 MB/sec
3845: Service Demand peak (#0 to #956): 1146 cycles/KB
3845: Service Demand Avg : 1146 cycles/KB
Local disk speed on the Lustre server seems fine, as does speed when
the Lustre machine writes
to the Lustre mounted drive (50-80 MB/s).
[murray@lusty slut]$ dd if=/dev/zero of=foo bs=1048576 count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 13.5875 seconds, 79.0 MB/s
Performance of the client machine writing to the Lustre drive is poor
(12 MB/s)
murray@nasnu3:/slut$ mount -t lustre -l
192.168.3.50@o2ib:/lusty on /slut type lustre (rw)
murray@nasnu3:/slut$ dd if=/dev/zero of=foo bs=1048576 count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 88.9857 seconds, 12.1 MB/s
Similar results from using Bonnie++ for the testing.
Any ideas as to what might be going on?
Thanks,
murray
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</pre>
</blockquote>
</blockquote>
<br>
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