[LU-10535] Improve error message handling when mirrored files are accessed by older clients

• Type: Improvement
• Resolution: Won't Fix
• Priority: Minor
• Affects Version/s: Lustre 2.11.0
• Labels: FLR2
• Assignee: Jian Yu
• Reporter: Joseph Gmitter (Inactive)

Description

Issue extracted from the testing captured in LU-10286:

I have a system configured as 2.11 servers, one 2.11 client and one 2.9.0 client
1. on the 2.11 client, create 1 pfl file, 1 flr file with plain layout, and 1 flr file with composite layout
2. on the 2.9 client, got these messages when try to access these files and when I do "ls -al" :

[root@onyx-77 lustre]# ls
foo-ext  foo-flr  foo-pfl  foo-plain-2.9
[root@onyx-77 lustre]# ls -al
[329391.090438] LustreError: 57728:0:(lov_internal.h:100:lsm_op_find()) unrecognized lsm_magic 0bd60bd0
[329391.102999] LustreError: 57728:0:(lov_internal.h:100:lsm_op_find()) Skipped 3 previous similar messages
[329391.115668] LustreError: 57728:0:(lov_pack.c:213:lov_verify_lmm()) bad disk LOV MAGIC: 0x0BD60BD0; dumping LMM (size=552):
[329391.130044] LustreError: 57728:0:(lov_pack.c:213:lov_verify_lmm()) Skipped 3 previous similar messages
[329391.142376] LustreError: 57728:0:(lov_pack.c:222:lov_verify_lmm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ustreError: 57728:0:(lov_pack.c:222:lov_verify_lmm()) Skipped 3 previous similar messages
[329391.266288] LustreError: 57728:0:(lcommon_cl.c:181:cl_file_inode_init()) Failure to initialize cl object [0x200000401:0x3:0x0]: -22
[329391.283577] LustreError: 57728:0:(lcommon_cl.c:181:cl_file_inode_init()) Skipped 3 previous similar messages
[329391.296622] LustreError: 57728:0:(llite_lib.c:2300:ll_prep_inode()) new_inode -fatal: rc -22
[329391.307933] LustreError: 57728:0:(llite_lib.c:2300:ll_prep_inode()) Skipped 1 previous similar message
ls: cannot access foo-ext: Invalid argument
ls: cannot access foo-pfl: Invalid argument
ls: cannot access foo-flr: Invalid argument
total 8
drwxr-xr-x  3 root root 4096 Dec 22 15:56 .
drwxr-xr-x. 3 root root 4096 Dec 18 20:52 ..
-?????????? ? ?    ?       ?            ? foo-ext
-?????????? ? ?    ?       ?            ? foo-flr
-?????????? ? ?    ?       ?            ? foo-pfl
-rw-r--r--  1 root root    0 Dec 22 15:56 foo-plain-2.9
[root@onyx-77 lustre]# 

Andreas' thoughts: It probably makes sense to improve these error messages to consolidate them to at most one message per unknown magic, or similar. It probably isn't useful to dump the long hex string to the console.

Issue Links

• is related to: LU-10286 Verify the behaviors when mirrored files are being accessed by old clients