38a19edd34
These changes were added to help debug issue #9187. Essentially, in the original bug, vdev_validate() seems to fails in vdev_label_read_config() and prints "failed reading config". This could happen because either: 1. The labels are actually corrupt and zio_wait() fails for all of them 2. The labels were discarded because they didn't pass the txg check. Beyond 9187, having debug info when case 2 happens could be useful in other scenarios, such as zpool import. Authored by: Pavel Zakharov <pavel.zakharov@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Prashanth Sreenivasa <pks@delphix.com> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Approved by: Matt Ahrens <mahrens@delphix.com> Ported-by: Brian Behlendorf <behlendorf1@llnl.gov> OpenZFS-issue: https://illumos.org/issues/9189 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/f6af1b7 Closes #7533
ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.
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