Summary This specification defines a methodology for enhancing Ubuntu's boot procedures to configure and support booting a system dependent on a degraded RAID1 device. Rationale Ubuntu's installer currently supports installation to software RAID1 targets for /boot and /. When one of the mirrored disks fails, and mdadm marks the RAID degraded, it becomes impossible to reboot the system in an unattended manner. Booting Ubuntu with a failed device in a RAID1 will force the system into a recovery console. In some cases, this is the desired behavior, as a local system administrator would want to backup critical data, cleanly halt the system, and replace the faulty hardware immediately. In other cases, this behavior is highly undesired--particularly when the system administrator is remotely located and would prefer a system with redundant disks tolerate a failed device even on reboot.
by
bobodod
2008-10-14 23:58
Ubuntu
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server
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Linux
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RAID
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RAID1
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sysadmin
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storage
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corruption
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boot
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errors
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bug
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recovery
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how-to
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wiki
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software
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operating_system
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open_source
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computers
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tech