reboot sometimes doesn't work well
Hi all!
Some times ago' in ninux Pisa we was experiencing kernel powering off the machine caused by batman-adv, with ordex help we debugged what was happening and the issue was solved bat that was possible because it was happening on x86 computers ( with screen )
Now it SEEMS the same is happening but on mips ( Ubiquity M devices ) but here i don't know how to make sure the problem is this, the symptoms is exactly the same, someone have idea how to save the powering off kernel output on some file so after detach/attach cable we can find what happened ?
Hello Gioacchino,
can you first tell us what version (and possibly which external patches) you are using?
Also, can you remember the symptoms of the previous problem? I don't remember very well what was happening...In this way everybody can understand what's going on.
Cheers,
Quoted 12 lines · Gioacchino Mazzurco
Hi all!
Some times ago' in ninux Pisa we was experiencing kernel powering off the machine caused by batman-adv, with ordex help we debugged what was happening and the issue was solved bat that was possible because it was happening on x86 computers ( with screen )
Now it SEEMS the same is happening but on mips ( Ubiquity M devices ) but here i don't know how to make sure the problem is this, the symptoms is exactly the same, someone have idea how to save the powering off kernel output on some file so after detach/attach cable we can find what happened ?
Signature · 4 lines
Antonio Quartulli ..each of us alone is worth nothing.. Ernesto "Che" Guevara
On powering off kernel panicked reporting batman-adv tryng to access some invalid pointer
Nor I remember exactly what was the solution but i remember you told me that was about trying to doing something with an interface no longer exists
Quoted 25 lines · Antonio Quartulli
Hello Gioacchino,
can you first tell us what version (and possibly which external patches) you are using?
Also, can you remember the symptoms of the previous problem? I don't remember very well what was happening...In this way everybody can understand what's going on.
Cheers,
Quoted 12 lines · Gioacchino Mazzurco
Hi all!
Some times ago' in ninux Pisa we was experiencing kernel powering off the machine caused by batman-adv, with ordex help we debugged what was happening and the issue was solved bat that was possible because it was happening on x86 computers ( with screen )
Now it SEEMS the same is happening but on mips ( Ubiquity M devices ) but here i don't know how to make sure the problem is this, the symptoms is exactly the same, someone have idea how to save the powering off kernel output on some file so after detach/attach cable we can find what happened ?
Quoted 7 lines · Gioacchino Mazzurco
Hi all!
Some times ago' in ninux Pisa we was experiencing kernel powering off the machine caused by batman-adv, with ordex help we debugged what was happening and the issue was solved bat that was possible because it was happening on x86 computers ( with screen )
Quoted 5 lines
Now it SEEMS the same is happening but on mips ( Ubiquity M devices ) but here i don't know how to make sure the problem is this, the symptoms is exactly the same, someone have idea how to save the powering off kernel output on some file so after detach/attach cable we can find what happened ?
Your best option is getting a serial cable; you *might* try in /etc/config/system to enable persistent syslog output, and make it write to the flash , but no guarantees you'll catch the kernel panic that way. Serial console definitely would.
Does this happen every time?
Quoted 1 line
"on powering off"
you mean when you issue a "reboot" command through ssh, or what? does it reboot succesfully, or simply hangs in there, requiring a manual power cycle?
We haven't come across anything similar, using this hardware:
tl-mr3020, tl-mr3220, tl-mr3420, tl-wr842nd, ubnt bullet2 , ubnt bullet m2
reboot is called by a script called through ssh
Quoted 1 line
does it reboot succesfully,
no it doesn't
Quoted 2 lines
or simply hangs in there, requiring a
manual power cycle?
It hangs there but I lost connectivity the device became unreachable from ipv4 and also ipv6, also link local ipv6 is gone :|
Quoted 27 lines · Gui Iribarren
Quoted 7 lines · Gioacchino Mazzurco
Hi all!
Some times ago' in ninux Pisa we was experiencing kernel powering off the machine caused by batman-adv, with ordex help we debugged what was happening and the issue was solved bat that was possible because it was happening on x86 computers ( with screen )
Quoted 5 lines
Now it SEEMS the same is happening but on mips ( Ubiquity M devices ) but here i don't know how to make sure the problem is this, the symptoms is exactly the same, someone have idea how to save the powering off kernel output on some file so after detach/attach cable we can find what happened ?
Your best option is getting a serial cable; you *might* try in
/etc/config/systemto enable persistent syslog output, and make it write to the flash , but no guarantees you'll catch the kernel panic that way. Serial console definitely would.Does this happen every time?
Quoted 1 line
"on powering off"
you mean when you issue a "reboot" command through ssh, or what? does it reboot succesfully, or simply hangs in there, requiring a manual power cycle?
We haven't come across anything similar, using this hardware:
tl-mr3020, tl-mr3220, tl-mr3420, tl-wr842nd, ubnt bullet2 , ubnt bullet m2
Quoted 9 lines · Gioacchino Mazzurco
reboot is called by a script called through ssh
Quoted 1 line
does it reboot succesfully,
no it doesn't
Quoted 2 lines
or simply hangs in there, requiring a
manual power cycle?It hangs there but I lost connectivity the device became unreachable from ipv4 and also ipv6, also link local ipv6 is gone :|
well, what about removing the batman-adv module _before_ rebooting? In this way we can somehow move the problem.
(remember to do not connect via the mesh when you do this :-P)
ciao
Quoted 30 lines · Gui Iribarren
Quoted 27 lines · Gioacchino Mazzurco
Quoted 7 lines
Hi all!
Some times ago' in ninux Pisa we was experiencing kernel powering off the machine caused by batman-adv, with ordex help we debugged what was happening and the issue was solved bat that was possible because it was happening on x86 computers ( with screen )
Quoted 5 lines
Now it SEEMS the same is happening but on mips ( Ubiquity M devices ) but here i don't know how to make sure the problem is this, the symptoms is exactly the same, someone have idea how to save the powering off kernel output on some file so after detach/attach cable we can find what happened ?
Your best option is getting a serial cable; you *might* try in
/etc/config/systemto enable persistent syslog output, and make it write to the flash , but no guarantees you'll catch the kernel panic that way. Serial console definitely would.Does this happen every time?
Quoted 1 line
"on powering off"
you mean when you issue a "reboot" command through ssh, or what? does it reboot succesfully, or simply hangs in there, requiring a manual power cycle?
We haven't come across anything similar, using this hardware:
tl-mr3020, tl-mr3220, tl-mr3420, tl-wr842nd, ubnt bullet2 , ubnt bullet m2
Signature · 4 lines
Antonio Quartulli ..each of us alone is worth nothing.. Ernesto "Che" Guevara
It seems that compiling with newer openwrt revisions happily the problem is not happening anymore so probably it was not batman-adv related
Sorry for the inconvenient but the behavior was pretty the same the other time
Anyway thanks for debugging suggestions!
Quoted 49 lines · Antonio Quartulli
Quoted 9 lines · Gioacchino Mazzurco
reboot is called by a script called through ssh
Quoted 1 line
does it reboot succesfully,
no it doesn't
Quoted 2 lines
or simply hangs in there, requiring a
manual power cycle?It hangs there but I lost connectivity the device became unreachable from ipv4 and also ipv6, also link local ipv6 is gone :|
well, what about removing the batman-adv module _before_ rebooting? In this way we can somehow move the problem.
(remember to do not connect via the mesh when you do this :-P)
ciao
Quoted 30 lines · Gui Iribarren
Quoted 27 lines · Gioacchino Mazzurco
Quoted 7 lines
Hi all!
Some times ago' in ninux Pisa we was experiencing kernel powering off the machine caused by batman-adv, with ordex help we debugged what was happening and the issue was solved bat that was possible because it was happening on x86 computers ( with screen )
Quoted 5 lines
Now it SEEMS the same is happening but on mips ( Ubiquity M devices ) but here i don't know how to make sure the problem is this, the symptoms is exactly the same, someone have idea how to save the powering off kernel output on some file so after detach/attach cable we can find what happened ?
Your best option is getting a serial cable; you *might* try in
/etc/config/systemto enable persistent syslog output, and make it write to the flash , but no guarantees you'll catch the kernel panic that way. Serial console definitely would.Does this happen every time?
Quoted 1 line
"on powering off"
you mean when you issue a "reboot" command through ssh, or what? does it reboot succesfully, or simply hangs in there, requiring a manual power cycle?
We haven't come across anything similar, using this hardware:
tl-mr3020, tl-mr3220, tl-mr3420, tl-wr842nd, ubnt bullet2 , ubnt bullet m2