Kernel Panic on mounting

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Kernel Panic on mounting

Post by /dev/null » Sat Dec 01, 2012 3:52 am

I use zfs with an internal 4 drives raidz1, and every weekend i backup the whole volume to an external drive (also zfs) attached via an usb 3 docking station. Worked 2 months like a charm. If i now attach the usb external drive via usb, my system freezes. If i boot with the usb drive attached, i got following kernel panic on boot up:

Code: Select all
panic(cpu 4 caller 0xffffff7f887b81b7): "/staging/zevo/src/uts/darwin/os/condvar.c:61 ZFS assertion failed: (cp->cv_waiters & CV_WAITERS_MASK) == 0"@/staging/zevo/src/uts/darwin/os/printf.c:43


Hope, that will never happen with my internal raid...
What's wrong?
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Re: Kernel Panic on mounting

Post by /dev/null » Sun Dec 02, 2012 6:57 am

Same result on my iMac with other usb dock.
S.M.A.R.T. OK, Disk works without zfs installed.

I destroyed the zfs partition ..., installed again, created a new partition...
and Backing up 2.5 TB of Data over usb3 (105 mb/s write avg.) a.t.m.
... on a SUNDAY!!! :twisted: :twisted: :twisted:

I think, this is the main reason, my parents use these analog legacy stuff like photo albums...
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Re: Kernel Panic on mounting

Post by amteza » Mon Dec 03, 2012 9:20 am

/dev/null wrote:I think, this is the main reason, my parents use these analog legacy stuff like photo albums...

Indeed!!! HA ha ha, you did read my mind. :-D
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link and thoughts

Post by grahamperrin » Wed Dec 05, 2012 2:33 pm

Compare the panic report in this case with the report in the following topic:

mistreated hardware, panic, cp->cv_waiters & CV_WAITERS_MASK

Possibilities in the /dev/null case include:

  1. a problem with hardware; and/or
  2. a problem with the GPT.

As we can not tell the state of the GPT before destruction of the pool, focus on details of hardware.
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