Re: kern/58776: RAIDframe panic on I/O error during reconstruction

[Greg Oster <oster%netbsd.org@localhost>]

On 2024-10-25 02.10, manu%netbsd.org@localhost wrote:
> > Number:         58776
> > Category:       kern
> > Synopsis:       RAIDframe panic on I/O error during reconstruction
> > Confidential:   no
> > Severity:       serious
> > Priority:       low
> > Responsible:    kern-bug-people
> > State:          open
> > Class:          sw-bug
> > Submitter-Id:   net
> > Arrival-Date:   Fri Oct 25 08:10:00 +0000 2024
> > Originator:     Emmanuel Dreyfus
> > Release:        NetBSD 10.0
> > Organization:
> NetBSD
> > Environment:
> NetBSD-10.0/i386
> > Description:
> On NetBSD-10, a RAID 1 with two disks get un unrecoverable I/O error
> during reconstruction, which sometime happens. But then it panics,
> which is worse that just failing a RAID reconstruction.
>
> panic: trap
> cpu0: Begin traceback...
> vpanic(c0d6708c,df0fcdd0,df0fce8c,c012fd98,c0d6708c,df0fce98,df0fce98,ea,df0fb2c0,210206) at netbsd:vpanic+0x196
> panic(c0d6708c,df0fce98,df0fce98,ea,df0fb2c0,210206,fffffff0,0,0,c42716a0) at netbsd:panic+0x18
> trap() at netbsd:trap+0xd51
> --- trap (number 6) ---
>                                                                
> mutex_vector_enter(c6f02c7c,1,1,c6dd6f44,c6dd6f44,c670316c,c6dd7308,df0fcf78,c078dc03,c670316c) at netbsd:mutex_vector_enter+0x91
> rf_CauseReconEvent(c670316c,1,c6dd6f44,9,c6703244,df0fcf9c,c077e310,c6dd6f44,5,5) at netbsd:rf_CauseReconEvent+0x58
> ReconWriteDoneProc(c6dd6f44,5,5,c6703248,c670316c,c077e271,c6c19c00,0,c0102011,c670316c) at netbsd:ReconWriteDoneProc+0x79
> rf_RaidIOThread(c670316c,43e6000,43fb000,0,c01005a8,0,0,0,0,0) at netbsd:rf_RaidIOThread+0x9f
>
> > How-To-Repeat:
> 	raidctl -R /dev/dk3 raid1
> 	But it is probably very specific to the hardware state.

Do you know if the I/O error was on /dev/dk3 or on the other component 
of raid1?  Did you catch anything else printed from the kernel?  What 
does the RAID config look like for this setup?  (In particular, is 
/dev/dk3 component 0 or component 1?)

Just trying to figure out if the I/O error has happened for an I/O 
before this Recon Event, or for this Recon Event.

Thanks.

Later...

Greg Oster