Re: [developer] fmd core dump

[Gabriele Bulfon <gbulfon@sonicle.com>]

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Here are some outputs.

top:
CPU states: 90.7% idle,  5.7% user,  3.6% kernel,  0.0% iowait,  0.0% swap
Kernel: 17637 ctxsw, 19873 trap, 8926 intr, 216414 syscall, 3 fork, 16781 flt
Memory: 128G phys mem, 16G free mem, 40G total swap, 40G free swap
 
swap -lh:
swapfile             dev    swaplo   blocks     free
/dev/zvol/dsk/rpool/swap 301,2        4K    4.00G    4.00G
/dev/zvol/dsk/rpool/swap2 301,3        4K    4.00G    4.00G
/dev/zvol/dsk/data/swap4 301,4        4K    32.0G    32.0G
 
swap -sh:
total: 30.8G allocated + 10.8G reserved = 41.6G used, 29.4G available
 
prstat -Z:
ZONEID    NPROC  SWAP   RSS MEMORY      TIME  CPU ZONE
     4     1489   29G   22G    17%  15:25:38 5.8% cloudserver
     5      185 3319M 2147M   1.6%   4:05:07 2.1% encoserver
     0       54 1036M 1044M   0.8%  15:17:20 0.8% global
     1       71 1271M  636M   0.5%   0:03:24 0.0% mlp
     3      232 7557M 5834M   4.5%   2:48:54 0.0% wp
 
G.
 
 
Sonicle S.r.l. : http://www.sonicle.com
Music: http://www.gabrielebulfon.com
eXoplanets : https://gabrielebulfon.bandcamp.com/album/exoplanets
 

 


Da: Toomas Soome via illumos-developer <developer@lists.illumos.org>
A: illumos-developer <developer@lists.illumos.org>
Data: 22 luglio 2024 16.10.42 CEST
Oggetto: Re: [developer] fmd core dump




On 22. Jul 2024, at 17:01, Gabriele Bulfon via illumos-developer <developer@lists.illumos.org> wrote:
Hi, I have a couple of systems, installed in 2012 and updated up to illumos 2019 (will have to update to 2024 later).
They periodically (every 3-4 months, sometimes earlier) create a core dump under /var/fm/fmd.
Looks like fmd core dumped, so no email notice is sent, and we end up filling the rpool.
I found  this link: https://support.oracle.com/knowledge/Sun%20Microsystems/1020519_1.html
So here I attach the pstack of one of the dumps.
 
Any idea?




 
fmd_alloc() does panic when we are out of memory:
 
        if (data == NULL)
                fmd_panic("insufficient memory (%u bytes needed)\n", size);

You can try adding some more swap space perhaps?

 
rgds,
toomas

Gabriele
 
 
Sonicle S.r.l. : http://www.sonicle.com
Music: http://www.gabrielebulfon.com
eXoplanets : https://gabrielebulfon.bandcamp.com/album/exoplanets
 


<core.fmd.dump.pstack.txt>


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