Dne 26. 11. 18 v 12:31 Cesare Leonardi napsal(a):
Resending, I erroneusly replied only to Zdenek, sorry.
I can provide details about this, that was filed by me:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913119
It's about a desktop PC, with two SSD (Samsung 850 EVO) on which i build RAID1
using LVM.
# pvs
PV VG Fmt Attr PSize PFree
/dev/sdb3 vg0 lvm2 a-- <250,00g 15,98g
/dev/sdc3 vg0 lvm2 a-- <250,00g 15,98g
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync
Convert
home vg0 rwi-aor--- 200,00g 100,00
root vg0 rwi-aor--- 30,00g 100,00
swap0 vg0 rwi-aor--- 4,00g 100,00
It's a desktop PC using Debian unstable, so it's rebooted quite often due to
frequent updates.
So you should probably start first with running latest available kernel - 4.19.
You also should collect 'dmesg' report
The freezes happens during normal work, without any resizing or any
maintenance on LVM going on. Most of the time I noted the freeze while I was
using Thunderbird. But eventually they resolve by themself: I wait minutes and
Aren't you running out-of-memory ?
Install some CPU/MEM monitoring service and watch out for problems
(AFAIK OOM doesn't really work on my machine - and often FF + Thunderbird
combo brings it to the state mouse barely moves and CPU spins in kswapd...)
I've not noticed any corruption due to these freeze but often they are very
long and very impacting. The only reliable workaround found was to reboot with:
scsi_mod.use_blk_mq=0 dm_mod.use_blk_mq=0
I doubt this have anything in common with this.
Regards
Zdenek
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