Contents
Installed Programs:
mdadm and mdmon
Installed Libraries:
None
Installed Directory:
None
mdadm-4.2
Introduction to mdadm
The mdadm package contains administration tools for software RAID.
This package is known to build and work properly using an LFS 11.3 platform.
Package Information
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Download (HTTP): https://www.kernel.org/pub/linux/utils/raid/mdadm/mdadm-4.2.tar.xz
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Download MD5 sum: a304eb0a978ca81045620d06547050a6
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Download size: 444 KB
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Estimated disk space required: 5.0 MB
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Estimated build time: 0.1 SBU
mdadm Dependencies
Optional
A MTA
User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/mdadm
![[Caution]](../images/caution.png)
Caution
Kernel versions in series 4.1 through 4.4.1 have a broken RAID implementation. Use a kernel with version at or above 4.4.2.
Kernel Configuration
Enable the following options in the kernel configuration and recompile the kernel, if necessary. Only the RAID types desired are required.
Device Drivers --->
[*] Multiple devices driver support (RAID and LVM) ---> [CONFIG_MD]
<*> RAID support [CONFIG_BLK_DEV_MD]
[*] Autodetect RAID arrays during kernel boot [CONFIG_MD_AUTODETECT]
<*/M> Linear (append) mode [CONFIG_MD_LINEAR]
<*/M> RAID-0 (striping) mode [CONFIG_MD_RAID0]
<*/M> RAID-1 (mirroring) mode [CONFIG_MD_RAID1]
<*/M> RAID-10 (mirrored striping) mode [CONFIG_MD_RAID10]
<*/M> RAID-4/RAID-5/RAID-6 mode [CONFIG_MD_RAID456]Installation of mdadm
Build mdadm by running the following command:
make
This package does not come with a working test suite.
Now, as the root user:
make BINDIR=/usr/sbin install
Command Explanations
make everything: This optional target creates extra programs, particularly a statically-linked version of mdadm. This needs to be manually installed.
--keep-going: Run the tests
to the end, even if one or more tests fail.
--logdir=test-logs: Defines
the directory where test logs are saved.
--save-logs: Instructs the
test suite to save the logs.
--tests=:
Optional comma separated list of tests to be executed (all tests,
if this option is not passed).
<test1,test2,...>