The mdadm package contains administration tools for software RAID.
This package is known to build and work properly using an LFS-7.9 platform.
Download (HTTP): http://www.kernel.org/pub/linux/utils/raid/mdadm/mdadm-3.4.tar.xz
Download MD5 sum: 04b8b21f637540350f8517c7e68d3c63
Download size: 416 KB
Estimated disk space required: 416 MB (12 MB with tests)
Estimated build time: 0.1 SBU (tests take about an hour, only partially processor dependent)
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/mdadm
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.
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]
Install mdadm by running the following commands:
If you wish to run the tests, ensure that your kernel supports RAID and that a version of mdadm is not already running. As many as 51 out of 123 tests may fail.
First fix the test script to avoid a bogus error message when tests fail and build the supporting programs:
sed -i 's# if.* == "1"#& -a -e $targetdir/log#' test && make test
Run the tests as the
./test --keep-going --logdir=test-logs --save-logs
Now, as the
make everything: This optional target creates extra programs, particularly a statically-linked version of mdadm and also versions of mdassemble. These all need to be manually installed.
--keep-going: Run the tests
to the end, even if one or more tests fail.
that the directory where test logs are saved.
--save-logs: Instructs the
test suite to save the logs.
Optional comma separated list of tests to be executed (all tests,
if this option is not passed).
Last updated on 2016-02-21 12:38:55 -0800