Re: [arch-projects] [INITSCRIPTS][PATCH 2/2] Disable Soft Raid (mdadm) detection in initscipts.

On Sun, Apr 03, 2011 at 05:39:57PM +0200, Seblu wrote:

On Sun, Apr 3, 2011 at 5:04 PM, Dave Reisner wrote:

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On Sun, Apr 03, 2011 at 04:55:14PM +0200, Sebastien Luttringer wrote:

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This job is done by recent version of udev in /lib/udev/rules.d/64-md-raid.rules.

this comes from mdadm, not udev. Yes but upstream rules does not match with my current content. I'm searching why.

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It's also only triggered if the partitions are of type linux_raid_member or isw_raid_member. partition not strictly. My raid is directly on disk (so without partition type from mbr) and detection is correct. Even after removing /etc/blkid* udev rules detect by /sbin/blkid -o udev -p $dev. As far i test, blkid is based on metadata.

blkid reads the same metadata that udev does. I misread the rule -- ID_FS_TYPE is a layer above the partition table itself. Thinking back, I recall hearing about this on systemd-devel...

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If this were to go through, we'd have a lot of people banging on our doors, so to speak.. I don't see why. Udev, via blikid will detect and assemble.

About isw_raid, line is not in mdadm package upstream 3.1.2 and 3.1.5.

It's in testing (3.2.1): ENV{ID_FS_TYPE}=="isw_raid_member", ACTION=="remove", RUN+="/sbin/mdadm -If $name --path $env{ID_PATH}" ENV{ID_FS_TYPE}=="isw_raid_member", ACTION=="add", RUN+="/sbin/mdadm --incremental $env{DEVNAME}"

Currently all people should come to us because they have an error when mdadm is automatically started at boot. cf bugreport closed by adding USE_MDADM. it does not seem to be the revolution :)

Indeed, that error's been there as long as I've been using Arch. dave