October 2015
Intermediate to advanced
458 pages
10h 49m
English
Content preview from Red Hat Enterprise Linux Troubleshooting GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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What we have learned so far
From the troubleshooting steps that we have taken so far, we have collected quite a few key pieces of data. Let's walk through what we have learned and what we can infer from these findings:
- On our system, we have two RAID devices.
Using the
mdadmcommand and the contents of/proc/mdstat, we were able to determine that this system has two RAID devices—/dev/md126and/dev/md127. - Both RAID devices are a RAID 1 and missing a mirrored device.
With the
mdadmcommand and output ofdmesg, we were able to identify that both RAID devices are set up as a RAID 1 device. On top of that, we were also able to see that both RAID devices were missing a disk; both the missing devices were partitions from the/dev/sdbhard disk. - Both
/dev/sdb1 ...
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