MTL-1841 Support native kdump #45
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To support native kdump we are using the ROOTRAID for storing /var/crash, the crash dir will be created on the ROOTRAID and bind-mounted to a place where kdump can find it.
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Summary and Scope
Issue Type
To support native kdump we are using the ROOTRAID for storing
/var/crash, the crash dir will be created on the ROOTRAID and bind-mounted to a place where kdump can find it.kdump will mount
ROOTRAIDat/kdump/mnt0, and it'll create a symbolic link at/kdump/bootwhich points to/kdump/mnt0/boot. The dump will be taken at/kdump/mnt0/$KDUMP_SAVEDIR. This change allows the/kdump/mnt0/bootand/kdump/mnt0/$KDUMP_SAVEDIRto be accessible.This change also creates a
README.txtfile for administrators to read that neighbors the new directories.Prerequisites
Idempotency
Risks and Mitigations
This change is relatively low risk, this change runs as its own pre-pivot hook and if it encounters a failure it'll emit warnings. If this script fails, kdump may work but be incomplete or not work at all.