[LU-1423] 16K pagesize clients error during ls

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.3.0, Lustre 2.1.3
• Affects Version/s: Lustre 2.1.1, Lustre 1.8.6
• Environment: clients = ia64 (16Kpagesize) lustre-1.8.6.81-5.1nas; server = x86(4kpagesize) lustre-2.1.1
• Severity: 2
• Assignee: Yang Sheng
• Reporter: Mahmoud Hanafi

Description

Mounting a lustre2.1.1 filesystem on a 1.8.6 client doing a ls will fail with the following error on the client logs.

LustreError: 2551436:0:(mdc_request.c:983:mdc_readpage()) Unexpected # bytes transferred: 4096 (16384 expected)
LustreError: 2556239:0:(mdc_request.c:983:mdc_readpage()) Unexpected # bytes transferred: 4096 (16384 expected)
LustreError: 2556239:0:(dir.c:949:ll_readdir_20()) error reading dir [0x12480001:0xc1bc1b0c:0x0] at 0: rc -71

Issue Links

• Trackbacks: Lustre 1.8.x known issues tracker While testing against Lustre b18 branch, we would hit known bugs which were already reported in Lustre Bugzilla https://bugzilla.lustre.org/. In order to move away from relying on Bugzilla, we would create a JIRA
• Trackbacks: Changelog 2.1 Changes from version 2.1.2 to version 2.1.3 Server support for kernels: 2.6.18308.13.1.el5 (RHEL5) 2.6.32279.2.1.el6 (RHEL6) Client support for unpatched kernels: 2.6.18308.13.1.el5 (RHEL5) 2.6.32279.2.1....

Comments

[Yang Sheng]

Patch landed. close bug.

[Jay Lan (Inactive)]

The patch was landed to b2_1 tree 3 days ago. So, please close this ticket.

[Yang Sheng]

Hi, Jay, Cloud we close this ticket? Please advice.

[Jay Lan (Inactive)]

The latest patch seemed working for us. Mahmoud tested it.

[Yang Sheng]

Patch update, Please retry, sorry for the inconvenient.

[Mahmoud Hanafi]

We installed the patch. Got a LBUG!

Lustre: 3692:0:(sec.c:1474:sptlrpc_import_sec_adapt()) import MGS->NET_0x500000a9719cf_UUID netid 50000: select flavor null^M
Lustre: 3692:0:(sec.c:1474:sptlrpc_import_sec_adapt()) Skipped 37 previous similar messages^M
LustreError: 3761:0:(mdt_handler.c:1247:mdt_sendpage()) ASSERTION(desc->bd_nob == nob) failed^M
LustreError: 3761:0:(mdt_handler.c:1247:mdt_sendpage()) LBUG^M
Pid: 3761, comm: mdt_rdpg_01^M
^M
Call Trace:^M
[<ffffffffa05e3855>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]^M
[<ffffffffa05e3e95>] lbug_with_loc+0x75/0xe0 [libcfs]^M
^M
Entering kdb (current=0xffff880c1f4fa0c0, pid 3761) on processor 0 Oops: (null)^M

[Yang Sheng]

Patch unload to: http://review.whamcloud.com/3014

[Yang Sheng]

This issue related to change: http://review.whamcloud.com/#change,604

For the fix, We need to check OBD_CONNECT_BRW_SIZE on server and return single page for old client. So looks like we need restore some codes that removed from above change.

[Jay Lan (Inactive)]

We use IB. ipoib on ib0 and rdma on ib1.

[Yang Sheng]

Hi, Jay, Could you tell me what net type is used between client&server.