Kernel panics on Backup server

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I am experiencing lately every few days kernel panics! this started a month ago! and now iit gets worst. Thsi system is a backup system with multiple Disks (lvm and md-raid).



Due to these issues I installed kerneldumping.



this is the finding:
https://pastebin.com/Z3uKhkVJ



Any thoughts on this? I thought of reducing the dirty_ration and bg_ratio.



But is this the issue? or something else?



Forgot the vital info! All day working:
Ubuntu 17.10
Kernel 4.13.0-38



The program uses SSH to backup (borg or just simple remote ssh command with combination with rsync)
Also many Hardlinks are created in the system to keep "snapshots"



sometimes it happens every other day, sometimes takes longer! I moved backups arround to avoid high load on specific periods.



Should i post more info about the crashdump like crash bt output etc?










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  • Welcome to Ask Ubuntu! :-) What version of Ubuntu are you running? Which Kernel version? What backup program? Please edit your question and help us help you better! ;-)
    – Fabby
    Apr 12 at 21:10














up vote
0
down vote

favorite












I am experiencing lately every few days kernel panics! this started a month ago! and now iit gets worst. Thsi system is a backup system with multiple Disks (lvm and md-raid).



Due to these issues I installed kerneldumping.



this is the finding:
https://pastebin.com/Z3uKhkVJ



Any thoughts on this? I thought of reducing the dirty_ration and bg_ratio.



But is this the issue? or something else?



Forgot the vital info! All day working:
Ubuntu 17.10
Kernel 4.13.0-38



The program uses SSH to backup (borg or just simple remote ssh command with combination with rsync)
Also many Hardlinks are created in the system to keep "snapshots"



sometimes it happens every other day, sometimes takes longer! I moved backups arround to avoid high load on specific periods.



Should i post more info about the crashdump like crash bt output etc?










share|improve this question























  • Welcome to Ask Ubuntu! :-) What version of Ubuntu are you running? Which Kernel version? What backup program? Please edit your question and help us help you better! ;-)
    – Fabby
    Apr 12 at 21:10












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I am experiencing lately every few days kernel panics! this started a month ago! and now iit gets worst. Thsi system is a backup system with multiple Disks (lvm and md-raid).



Due to these issues I installed kerneldumping.



this is the finding:
https://pastebin.com/Z3uKhkVJ



Any thoughts on this? I thought of reducing the dirty_ration and bg_ratio.



But is this the issue? or something else?



Forgot the vital info! All day working:
Ubuntu 17.10
Kernel 4.13.0-38



The program uses SSH to backup (borg or just simple remote ssh command with combination with rsync)
Also many Hardlinks are created in the system to keep "snapshots"



sometimes it happens every other day, sometimes takes longer! I moved backups arround to avoid high load on specific periods.



Should i post more info about the crashdump like crash bt output etc?










share|improve this question















I am experiencing lately every few days kernel panics! this started a month ago! and now iit gets worst. Thsi system is a backup system with multiple Disks (lvm and md-raid).



Due to these issues I installed kerneldumping.



this is the finding:
https://pastebin.com/Z3uKhkVJ



Any thoughts on this? I thought of reducing the dirty_ration and bg_ratio.



But is this the issue? or something else?



Forgot the vital info! All day working:
Ubuntu 17.10
Kernel 4.13.0-38



The program uses SSH to backup (borg or just simple remote ssh command with combination with rsync)
Also many Hardlinks are created in the system to keep "snapshots"



sometimes it happens every other day, sometimes takes longer! I moved backups arround to avoid high load on specific periods.



Should i post more info about the crashdump like crash bt output etc?







kernel backup raid crash






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edited Apr 13 at 6:44

























asked Apr 12 at 20:13









Vassilis Aretakis

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  • Welcome to Ask Ubuntu! :-) What version of Ubuntu are you running? Which Kernel version? What backup program? Please edit your question and help us help you better! ;-)
    – Fabby
    Apr 12 at 21:10
















  • Welcome to Ask Ubuntu! :-) What version of Ubuntu are you running? Which Kernel version? What backup program? Please edit your question and help us help you better! ;-)
    – Fabby
    Apr 12 at 21:10















Welcome to Ask Ubuntu! :-) What version of Ubuntu are you running? Which Kernel version? What backup program? Please edit your question and help us help you better! ;-)
– Fabby
Apr 12 at 21:10




Welcome to Ask Ubuntu! :-) What version of Ubuntu are you running? Which Kernel version? What backup program? Please edit your question and help us help you better! ;-)
– Fabby
Apr 12 at 21:10















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