I just re-ran the scan using strace -f and this is the tail of the output up
until the machine rebooted:
2017/08/23 08:39:44 [13249/7] ListMgr | SQL query: COMMIT
[pid 13254] <... futex resumed> ) = -1 EAGAIN (Resource temporarily
unavailable)
[pid 13267] futex(0x7f287e59e9f0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 13263] futex(0x7f287e59e9f0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 13271] <... ioctl resumed> , 0x7f28351b9490) = 0
[pid 13257] <... write resumed> ) = 58
[pid 13254] futex(0x7f287e59e9f0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 13271] newfstatat(10, "ompi-f77.pc", <unfinished ...>
[pid 13257] futex(0x7f287e59e9f0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 13254] <... futex resumed> ) = -1 EAGAIN (Resource temporarily
unavailable)
[pid 13270] <... openat resumed> ) = 12
[pid 13257] <... futex resumed> ) = 1
[pid 13255] <... futex resumed> ) = 0
[pid 13254] futex(0x7f287e59e9f0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 13270] ioctl(12, _IOC(_IOC_READ, 0x66, 0xad, 0x08), 0x7f284190a680
<unfinished ...>
[pid 13257] poll([{fd=15, events=POLLIN|POLLPRI}], 1, 0 <unfinished ...>
[pid 13255] futex(0x7f287e59e9f0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 13270] <... ioctl resumed> ) = 0
[pid 13257] <... poll resumed> ) = 0 (Timeout)
[pid 13255] <... futex resumed> ) = 1
[pid 13254] <... futex resumed> ) = 1
[pid 13253] <... futex resumed> ) = 0
[pid 13268] <... futex resumed> ) = 0
[pid 13270] close(12 <unfinished ...>
[pid 13257] write(15, "\7\0\0\0\3COMMIT", 11 <unfinished ...>
[pid 13255] write(2, "2017/08/23 08:39:44 [13249/6] Li"..., 108 <unfinished ...>
2017/08/23 08:39:44 [13249/6] ListMgr | SQL query: SELECT id FROM ENTRIES WHERE
id='0x200000405:0xd5b0:0x0'
[pid 13268] futex(0x7f287e59e9f0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 13253] futex(0x7f287e59e9f0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 13257] <... write resumed> ) = 11
[pid 13255] <... write resumed> ) = 108
[pid 13254] futex(0x7f287e59e9f0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 13271] <... newfstatat resumed> {st_mode=S_IFREG|0640, st_size=665, ...},
AT_SYMLINK_NOFOLLOW) = 0
[pid 13257] read(15, <unfinished ...>
[pid 13255] futex(0x7f287e59e9f0, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 13254] <... futex resumed> ) = -1 EAGAIN (Resource temporarily
unavailable)
[pid 13271] openat(10, "ompi-f77.pc", O_RDONLY|O_NONBLOCK|O_NOFOLLOW|O_NOATIME
<unfinished ...>
[pid 13266] <... futex resumed> ) = 0
[pid 13255] <... futex resumed> ) = 1
[pid 13254] write(2, "2017/08/23 08:39:44 [13249/5] Li"..., 1082017/08/23
08:39:44 [13249/5] ListMgr | SQL query: SELECT id FROM ENTRIES WHERE
id='0x200000405:0xcc68:0x0'
<unfinished ...>
[pid 13266] futex(0x7f287e59e9f0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 13255] futex(0x7f287e59e9f0, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 13254] <... write resumed> ) = 108
[pid 13254] futex(0x7f287e59e9f0, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 13270] <... close resumed> ) = 0
[pid 13259] <... futex resumed> ) = 0
Write failed: Broken pipe
NOTE: I captured the entire output from strace in a screen log.
====
Joe Mervini
Sandia National Laboratories
High Performance Computing
505.844.6770
jame...@sandia.gov<mailto:jame...@sandia.gov>
On Aug 22, 2017, at 9:17 AM, Mervini, Joseph A
<jame...@sandia.gov<mailto:jame...@sandia.gov>> wrote:
Hello,
I have not received a response to this posting but have continued to try and
figure out why this problem persists.
Since I initially opened the request I have been able to duplicate it on three
different machines. I have also tried multiple kernel versions and lustre 2.8
client versions. I have also completely rebuilt my lustre file system will a
newer version of 2.8 (2.8.0.9.) The problem only presents itself when running a
scan against the 2.8 lustre file system. A 2.5 lustre file system works fine.
I decided to run the simultaneous scan against both file systems using valgrind
and although (again) the 2.5 version of the file system completed the system
rebooted prior to the 2.8 version scan completed. However in both scan
valgrind’s output was similar with output like this:
==8883== Thread 7:
==8883== Conditional jump or move depends on uninitialised value(s)
==8883== at 0x44B8E8: batch_insert_stripe_info (listmgr_stripe.c:168)
==8883== by 0x44B1F1: listmgr_batch_insert_no_tx (listmgr_insert.c:246)
==8883== by 0x44B35D: ListMgr_Insert (listmgr_insert.c:274)
==8883== by 0x4199E4: EntryProc_db_apply (std_pipeline.c:1616)
==8883== by 0x415B5D: entry_proc_worker_thr (entry_proc_impl.c:145)
==8883== by 0x60B2DC4: start_thread (in /usr/lib64/libpthread-2.17.so)
==8883== by 0x6B0D76C: clone (in /usr/lib64/libc-2.17.so)
==8883==
==8883== Conditional jump or move depends on uninitialised value(s)
==8883== at 0x44B9C5: batch_insert_stripe_info (listmgr_stripe.c:168)
==8883== by 0x44B1F1: listmgr_batch_insert_no_tx (listmgr_insert.c:246)
==8883== by 0x44B35D: ListMgr_Insert (listmgr_insert.c:274)
==8883== by 0x4199E4: EntryProc_db_apply (std_pipeline.c:1616)
==8883== by 0x415B5D: entry_proc_worker_thr (entry_proc_impl.c:145)
==8883== by 0x60B2DC4: start_thread (in /usr/lib64/libpthread-2.17.so)
==8883== by 0x6B0D76C: clone (in /usr/lib64/libc-2.17.so)
==8883==
==8883==
==8883== More than 10000000 total errors detected. I'm not reporting any more.
==8883== Final error counts will be inaccurate. Go fix your program!
==8883== Rerun with --error-limit=no to disable this cutoff. Note
==8883== that errors may occur in your program without prior warning from
==8883== Valgrind, because errors are no longer being displayed.
==8883==
====
Is this considered normal?
Joe Mervini
Sandia National Laboratories
High Performance Computing
505.844.6770
jame...@sandia.gov<mailto:jame...@sandia.gov>
On Jul 11, 2017, at 10:17 AM, Mervini, Joseph A
<jame...@sandia.gov<mailto:jame...@sandia.gov>> wrote:
Hello,
I have a problem similar to
https://sourceforge.net/p/robinhood/mailman/message/35883907/ in which the
robinhood server running mariadb-5.5.52-1.el7.x86_64 and lustre 2.8.0.8 client
will reboot when the initial scan is run. I am running this in a testbed
environment prior to deployment on our production system because I want to get
a complete handle on it before I commit to the deployment. I have 2 separate
lustre file systems that I am running against: One is a 408TB lustre 2.8 file
system with ~16M inodes, the other is a 204TB lustre 2.5.5 file system with ~3M
inodes.
The curious thing is that I had successfully scanned both file systems
independently on the system with everything working (including web-gui) and
then basically blew away the databases to get a datapoint on how the system
performed and the time it took if I ran a scan on both file systems
simultaneously. It appears that it is only impacting the 2.8 file system
database. I just ran a fresh scan against the 2.5.5 file system without
problem. I then stated a new scan against the 2.8 file system an once again it
rebooted.
Like the other support ticket above, when I ran the scan only on the 2.8 file
system in debug mode it also reported messages similar to “2017/07/10 15:44:58
[15191/6] FS_Scan | openat failed on <parent_fd=18>/libippch.so: Too many
levels of symbolic links”. I check a large number of the files that were being
reported and for the most part they were library files with only a couple of
symlinks to the .so file in the same directory.
The only other thing of note that I was able to capture is this from the
console output:
[ 3301.937577] LustreError: 15209:0:(linux-module.c:92:obd_ioctl_getdata())
Version mismatch kernel (10004) vs application (0)
[ 3301.950059] LustreError: 15209:0:(class_obd.c:230:class_handle_ioctl()) OBD
ioctl: data error"
There was no indication of a fault in any of the log files and I was running
top and htop during the process and neither CPU or memory was exhausted. Nor
did I see anything suspicious happening on the file system itself.
Any help or clues as to why this is failing would be greatly appreciated.
Thanks in advance.
====
Joe Mervini
Sandia National Laboratories
High Performance Computing
505.844.6770
jame...@sandia.gov<mailto:jame...@sandia.gov>
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