zfs(1M) mount stuck in kernel context though the zpool is ONLINE and in healthy state.

(Doc ID 1948488.1)

Last updated on JULY 29, 2016

Applies to:

Solaris Operating System - Version 10 3/05 to 10 1/13 U11 [Release 10.0]
Information in this document applies to any platform.


The zfs(1M) mount command could get stuck in kernel context replaying ZIL(ZFS Intent Log) records due to Bug 15500878.  The zpool could be imported without mounting the datasets, and zpool(1M) scrub shows the zpool is online and healthy.  

If this happens to the root dataset of rpool, the symptoms include hang during boot, rpool can be imported without mounting the root dataset, or manual zfs(1M) mount of the root dataset hangs.

The zfs(1M) mount  command is observed to be stuck with the following kernel level thread stack:



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