6ffc771fa2
Added support for nested md devices, md on top of LVM devices such as encrypted partitions (although I don't recommend that, I recommend encrypting the md device instead), and support for md devices on top of multipath dm devices. Signed-off-by: Doug Ledford <dledford@redhat.com>
68 lines
3.3 KiB
Plaintext
68 lines
3.3 KiB
Plaintext
# This file causes block devices with Linux RAID (mdadm) signatures to
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# automatically cause mdadm to be run.
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# See udev(8) for syntax
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# Don't process any events if anaconda is running as anaconda brings up
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# raid devices manually
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ENV{ANACONDA}=="?*", GOTO="md_imsm_inc_end"
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# Also don't process disks that are slated to be a multipath device
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ENV{DM_MULTIPATH_DEVICE_PATH}=="?*", GOTO="md_imsm_inc_end"
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# We process add events on block devices (since they are ready as soon as
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# they are added to the system), but we must process change events as well
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# on any dm devices (like LUKS partitions or LVM logical volumes) and on
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# md devices because both of these first get added, then get brought live
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# and trigger a change event. The reason we don't process change events
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# on bare hard disks is because if you stop all arrays on a disk, then
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# run fdisk on the disk to change the partitions, when fdisk exits it
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# triggers a change event, and we want to wait until all the fdisks on
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# all member disks are done before we do anything. Unfortunately, we have
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# no way of knowing that, so we just have to let those arrays be brought
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# up manually after fdisk has been run on all of the disks.
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# First, process all add events (md and dm devices will not really do
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# anything here, just regular disks, and this also won't get any imsm
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# array members either)
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SUBSYSTEM=="block", ACTION=="add", ENV{ID_FS_TYPE}=="linux_raid_member", \
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RUN+="/sbin/mdadm -I $env{DEVNAME}"
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SUBSYSTEM=="block", ACTION=="remove", ENV{ID_FS_TYPE}=="linux_raid_member", \
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RUN+="/sbin/mdadm -If $name --path $env{ID_PATH}"
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# Next, check to make sure the BIOS raid stuff wasn't turned off via cmdline
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IMPORT{cmdline}="noiswmd"
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IMPORT{cmdline}="nodmraid"
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ENV{noiswmd}=="?*", GOTO="md_imsm_inc_end"
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ENV{nodmraid}=="?*", GOTO="md_imsm_inc_end"
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SUBSYSTEM=="block", ACTION=="add", ENV{ID_FS_TYPE}=="isw_raid_member", \
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RUN+="/sbin/mdadm -I $env{DEVNAME}"
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SUBSYSTEM=="block", ACTION=="remove", ENV{ID_FS_TYPE}=="isw_raid_member", \
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RUN+="/sbin/mdadm -If $name --path $env{ID_PATH}"
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LABEL="md_imsm_inc_end"
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# Next make sure that this isn't a dm device we should skip for some reason
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ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="dm_change_end"
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ENV{DM_UDEV_DISABLE_DISK_RULES_FLAG}=="1", GOTO="dm_change_end"
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ENV{DM_SUSPENDED}=="1", GOTO="dm_change_end"
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KERNEL=="dm-*", SUBSYSTEM=="block", ENV{ID_FS_TYPE}=="linux_raid_member", \
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ACTION=="change", RUN+="/sbin/mdadm -I $env{DEVNAME}"
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LABEL="dm_change_end"
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# Finally catch any nested md raid arrays. If we brought up an md raid
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# array that's part of another md raid array, it won't be ready to be used
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# until the change event that occurs when it becomes live
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KERNEL=="md*", SUBSYSTEM=="block", ENV{ID_FS_TYPE}=="linux_raid_member", \
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ACTION=="change", RUN+="/sbin/mdadm -I $env{DEVNAME}"
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# In case the initramfs only started some of the arrays in our container,
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# run incremental assembly on the container itself. Note: we ran mdadm
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# on the container in 64-md-raid.rules, and that's how the MD_LEVEL
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# environment variable is already set. If that disappears from the other
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# file, we will need to add this line into the middle of the next rule:
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# IMPORT{program}="/sbin/mdadm -D --export $tempnode", \
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SUBSYSTEM=="block", ACTION=="add|change", KERNEL=="md*", \
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ENV{MD_LEVEL}=="container", RUN+="/sbin/mdadm -I $env{DEVNAME}"
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