[Bug 180001] [zfs] [panic] Solaris(panic): zfs: allocating allocated segment

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=180001

Guido Falsi <madpilot at FreeBSD.org> changed:

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                 CC|                            |madpilot at FreeBSD.org

--- Comment #5 from Guido Falsi <madpilot at FreeBSD.org> ---
Posting a followup since I'm experiencing a very similar error.

Machine is a laptop with only one disk. FreeBSD 13-head, r361728

The machine is configures with geli and zfs boot, as created by the FreeBSD
installer.

At some point the machine has had a panic+reboot while shutting down [1] and on
reboot, after inputting the geli password, the machine panicked. With a debug
kernel I discovered the reason:

panic: Solaris(panic): zfs: allocating allocated
segment(offset=433818959872 size=4096) of (offset=433818021200 size=32768)

The panic appears to happen in range_tree_add_impl, called from
space_map_load_callback.

After this I was able to make the machine boot by setting vfs.zfs.recover=1 in
loader.conf.

At boot it now gives these error messages:

Solaris: WARNING: zfs: allocating allocated segment(offset=433818959872
size=4096) of (offset=433818931200 size=32768)

Solaris: WARNING: zfs: allocating allocated segment(offset=433815740416
size=4096) of (offset=433815736320 size=8192)


Once booted the machine works fine, for the little use I've put it up after
this event.

I also tried to run some more diagnostic

zdb gave me this:

# zdb -c zroot

Traversing all blocks to verify metadata checksums and verify nothing leaked
...

loading concrete vdev 0, metaslab 101 of 113 ...Assertion failed: rs->rs_start
<= start (0x65019be000 <= 0x65019bd000), file
/usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/range_tree.c, line 410.
Abort (core dumped)


Anny other diagnostic I could try to run?


[1] this is actually speculation since it happened  when I commanded a shutdown
from another PC in another room, and found the machine at thew geli password
prompt instead of turned off.

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