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2e215fecbe
Authored by: Steven Hartland <steven.hartland@multiplay.co.uk> Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Approved by: Gordon Ross <gordon.w.ross@gmail.com> When a member of a RAIDZ has been replaced with a device smaller than the original, then the top level vdev can report its expand size as 16.0E. The reduced child asize causes the RAIDZ to have a vdev_asize lower than its vdev_max_asize which then results in an underflow during the calculation of the parents expand size. Fix this by updating the vdev_asize if it shrinks, which is already protected by a check against vdev_min_asize so should always be safe. Also for RAIDZ vdevs, ensure that the sum of their child vdev_min_asize is always greater than the parents vdev_min_size. Reviewed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Ported-by: George Melikov <mail@gmelikov.ru> OpenZFS-issue: https://www.illumos.org/issues/7885 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/bb0dbaa Closes #5963 |
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