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gousiosg/rebuild_megaraid.md

Last active February 4, 2020 10:09
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Rebuild RAID array when one disk has been marked as faulty (but it is not really)
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rebuild_megaraid.md

First you need to have LSI's megacli installed. See how here:

# Get info on RAID arrays
sudo megacli -ldinfo -lALL -a0

If you cannot find an array where state is not (Partially) Degraded don't do any of the steps below!

# Find drive that needs to be replaced or rebuilt
sudo megacli -pdlist -a0 |egrep "Enclosure Device|Slot|Firmware state"

# The drive coordinates look like [enclosure:drv_id]

# Make the state to Unconfigured(BAD)
sudo megacli -pdmarkmissing -physdrv[0:6] -a0

# Make device state good
sudo megacli -pdmakegood -physdrv[0:6] -a0

# Verify that the array started rebuilding
sudo megacli -pdlist -a0 |egrep "Enclosure Device|Slot|Firmware state" | grep
Rebuild

# You could also use megasasctl
# sudo megasasctl

Links with useful info:

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