https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278494
Bug ID: 278494
Summary: Hang during boot after recent ZFS update in CURRENT
Product: Base System
Version: CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 250119
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=250119&action=edit
Screenshot from my IPMI console of the backgrace from the zpool command
On my development system running CURRENT, my system failed to boot after a
recent update. The system hangs during boot long before enough of userspace is
loaded for me to debug it easily.
I did a git bisect and tracked it down to
https://cgit.freebsd.org/src/commit/?id=1719886f6d08408b834d270c59ffcfd821c8f63a,
which is "zfs: merge openzfs/zfs@90ba19eb7".
When I revert the changes from 1719886f6d08408b834d270c59ffcfd821c8f63a my
system is able to boot just fine (running
b37333899bd27a74bdef34b7f34eb41bc6bd51bd with
1719886f6d08408b834d270c59ffcfd821c8f63a reverted).
>From DDD I can see that there is a zpool command which is blocking boot
forever, which I suspect is a zpool command to import all of my zfs pools.
Attached is a screenshot from my IPMI console.
That zpool process is stuck creating zvols, of which I have many, so I suspect
"#15992 99741bde59 zvol: use multiple taskq", but I haven't verified this as
reverting just this change will require some merging I haven't finished.
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