How can I diagnose why a resilver appears to be hanging at a certain percentage, seemingly doing nothing for quite a while, even though the HDD LED is lit up permanently (no apparent head seeking)?
The drives in the pool are WD Raid Editions, thus have TLER and should time out on errors in just seconds. ZFS nor the syslog however were reporting any IO errors, so it weren't the disks. Stopping the scrub didn't work, the zfs command didn't return. It took a hard reset to make it stop. The system in question is OpenSolaris updated to snv_98, the pool had version 11 when I tried, I've upgraded it to 13 but didn't retry scrubbing yet. Any ideas? Thanks, -mg
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