Discussion:
GFS2 Errors
(too old to reply)
Kristián Feldsam
2017-07-18 23:25:47 UTC
Permalink
Hello, I see today GFS2 errors in log and nothing about that is on net, so I writing to this mailing list.

node2 19.07.2017 01:11:55 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-4549568322848002755
node2 19.07.2017 01:10:56 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-8191295421473926116
node2 19.07.2017 01:10:48 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-8225402411152149004
node2 19.07.2017 01:10:47 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-8230186816585019317
node2 19.07.2017 01:10:45 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-8242007238441787628
node2 19.07.2017 01:10:39 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-8250926852732428536
node3 19.07.2017 00:16:02 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-5150933278940354602
node3 19.07.2017 00:16:02 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64
node3 19.07.2017 00:16:02 kernel kern err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64
Would somebody explain this errors? cluster is looks like working normally. I enabled vm.zone_reclaim_mode = 1 on nodes...

Thank you!

S pozdravem Kristián Feldsam
Tel.: +420 773 303 353, +421 944 137 535
E-mail.: ***@feldhost.cz

www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové sluÅŸby za adekvátní ceny.

FELDSAM s.r.o.
V rohu 434/3
Praha 4 – Libuš, PSČ 142 00
IČ: 290 60 958, DIČ: CZ290 60 958
C 200350 vedená u Městského soudu v Praze

Banka: Fio banka a.s.
Číslo účtu: 2400330446/2010
BIC: FIOBCZPPXX
IBAN: CZ82 2010 0000 0024 0033 0446
Digimer
2017-07-18 23:39:08 UTC
Permalink
Post by Kristián Feldsam
Hello, I see today GFS2 errors in log and nothing about that is on net,
so I writing to this mailing list.
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-4549568322848002755
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8191295421473926116
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8225402411152149004
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8230186816585019317
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8242007238441787628
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8250926852732428536
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-5150933278940354602
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64
Would somebody explain this errors? cluster is looks like working
normally. I enabled vm.zone_reclaim_mode = 1 on nodes...
Thank you!
Please post this to the Clusterlabs - Users list. This ML is deprecated.
--
Digimer
Papers and Projects: https://alteeve.com/w/
"I am, somehow, less interested in the weight and convolutions of
Einstein’s brain than in the near certainty that people of equal talent
have lived and died in cotton fields and sweatshops." - Stephen Jay Gould
--
Linux-cluster mailing list
Linux-***@redhat.com
https://www.redhat.com/mailman/listinfo/linux-cluste
Steven Whitehouse
2017-07-19 09:09:08 UTC
Permalink
Hi,
Post by Digimer
Post by Kristián Feldsam
Hello, I see today GFS2 errors in log and nothing about that is on net,
so I writing to this mailing list.
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-4549568322848002755
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8191295421473926116
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8225402411152149004
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8230186816585019317
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8242007238441787628
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8250926852732428536
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-5150933278940354602
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64
Would somebody explain this errors? cluster is looks like working
normally. I enabled vm.zone_reclaim_mode = 1 on nodes...
Thank you!
Please post this to the Clusterlabs - Users list. This ML is deprecated.
cluster-devel is the right list for GFS2 issues. This looks like a bug
to me, since the object count should never be negative. The glock
shrinker is not (yet) zone aware, although the quota shrinker is. Not
sure if that is related, but perhaps.... certainly something we'd like
to investigate further. That said the messages in themselves are
harmless, but it will likely indicate a less than optimal use of memory.
If there are any details that can be shared about the use case, and how
to reproduce that will be very helpful for us to know. Also what kernel
version was this?

Steve.
--
Linux-cluster mailing list
Linux-***@redhat.com
https://www.redhat.com/mailman/listinfo/linux-clust
Kristián Feldsam
2017-07-19 09:21:14 UTC
Permalink
Hello,

kernel actually running in nodes is 4.11.1-1.el7.elrepo.x86_64

use case:

3 compute nodes in cluster corosync/pacemaker

resources

dlm
clvm
gfs volume 1
gfs volume 2

volume journal size 256MB

please tell me cmds for more informations

Thank you!

S pozdravem Kristián Feldsam
Tel.: +420 773 303 353, +421 944 137 535
E-mail.: ***@feldhost.cz

www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové sluÅŸby za adekvátní ceny.

FELDSAM s.r.o.
V rohu 434/3
Praha 4 – Libuš, PSČ 142 00
IČ: 290 60 958, DIČ: CZ290 60 958
C 200350 vedená u Městského soudu v Praze

Banka: Fio banka a.s.
Číslo účtu: 2400330446/2010
BIC: FIOBCZPPXX
IBAN: CZ82 2010 0000 0024 0033 0446
Hi,
Post by Digimer
Post by Kristián Feldsam
Hello, I see today GFS2 errors in log and nothing about that is on net,
so I writing to this mailing list.
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-4549568322848002755
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8191295421473926116
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8225402411152149004
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8230186816585019317
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8242007238441787628
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-8250926852732428536
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete
nr=-5150933278940354602
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64
gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64
Would somebody explain this errors? cluster is looks like working
normally. I enabled vm.zone_reclaim_mode = 1 on nodes...
Thank you!
Please post this to the Clusterlabs - Users list. This ML is deprecated.
cluster-devel is the right list for GFS2 issues. This looks like a bug to me, since the object count should never be negative. The glock shrinker is not (yet) zone aware, although the quota shrinker is. Not sure if that is related, but perhaps.... certainly something we'd like to investigate further. That said the messages in themselves are harmless, but it will likely indicate a less than optimal use of memory. If there are any details that can be shared about the use case, and how to reproduce that will be very helpful for us to know. Also what kernel version was this?
Steve.
Continue reading on narkive:
Loading...