69 lines
2.9 KiB
Diff
69 lines
2.9 KiB
Diff
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From 7a717ada3297bef83c1f70c6baa50ea15ed10fd1 Mon Sep 17 00:00:00 2001
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From: Guoqing Jiang <gqjiang@suse.com>
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Date: Wed, 22 Nov 2017 12:59:15 +0800
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Subject: [PATCH] udev rules: introduce rules for cluster-md to confirm device
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For cluster scenario, add device is different with native raid.
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When a node issues adds a device, then the node will broadcast
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a message with UUID to other nodes in the cluster. If receiving
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node can find the device with the specific UUID, it must confirm
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the device, otherwise reports it is missing.
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[gqjiang: changed a little bit since difference context in Makefile]
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Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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---
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Makefile | 6 ++++--
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udev-md-clustered-confirm-device.rules | 21 +++++++++++++++++++++
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2 files changed, 25 insertions(+), 2 deletions(-)
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create mode 100644 udev-md-clustered-confirm-device.rules
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diff --git a/Makefile b/Makefile
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index 5fd7f166e7e1..70df31267982 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -291,8 +291,10 @@ install-man: mdadm.8 md.4 mdadm.conf.5 mdmon.8
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$(INSTALL) -D -m 644 md.4 $(DESTDIR)$(MAN4DIR)/md.4
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$(INSTALL) -D -m 644 mdadm.conf.5 $(DESTDIR)$(MAN5DIR)/mdadm.conf.5
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-install-udev: udev-md-raid-arrays.rules udev-md-raid-assembly.rules
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- @for file in 63-md-raid-arrays.rules 64-md-raid-assembly.rules ; \
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+install-udev: udev-md-raid-arrays.rules udev-md-raid-assembly.rules \
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+ udev-md-clustered-confirm-device.rules
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+ @for file in 63-md-raid-arrays.rules 64-md-raid-assembly.rules \
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+ 69-md-clustered-confirm-device.rules; \
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do sed -e 's,BINDIR,$(BINDIR),g' udev-$${file#??-} > .install.tmp.1 && \
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$(ECHO) $(INSTALL) -D -m 644 udev-$${file#??-} $(DESTDIR)$(UDEVDIR)/rules.d/$$file ; \
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$(INSTALL) -D -m 644 .install.tmp.1 $(DESTDIR)$(UDEVDIR)/rules.d/$$file ; \
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diff --git a/udev-md-clustered-confirm-device.rules b/udev-md-clustered-confirm-device.rules
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new file mode 100644
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index 000000000000..3e5381e19315
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--- /dev/null
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+++ b/udev-md-clustered-confirm-device.rules
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@@ -0,0 +1,21 @@
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+# do not edit this file, it will be overwritten on update
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+
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+SUBSYSTEM!="block", GOTO="clustermd_end"
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+
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+# handle md arrays
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+KERNEL!="md*", GOTO="clustermd_end"
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+ENV{DEVTYPE}!="disk", GOTO="clustermd_end"
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+ACTION!="change", GOTO="clustermd_end"
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+ENV{EVENT}!="ADD_DEVICE", GOTO="clustermd_end"
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+ENV{DEVICE_UUID}!="?*", GOTO="clustermd_end"
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+ENV{RAID_DISK}!="?*", GOTO="clustermd_end"
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+
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+# Based on the received UUID, node confirms the device if
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+# it is found by blkid, otherwise the node reports it is
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+# missing.
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+PROGRAM="BINDIR/blkid -o device -t UUID_SUB=$env{DEVICE_UUID}", ENV{.md.newdevice} = "$result"
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+
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+ENV{.md.newdevice}!="", RUN+="BINDIR/mdadm --manage $env{DEVNAME} --cluster-confirm $env{RAID_DISK}:$env{.md.newdevice}"
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+ENV{.md.newdevice}=="", RUN+="BINDIR/mdadm --manage $env{DEVNAME} --cluster-confirm $env{RAID_DISK}:missing"
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+
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+LABEL="clustermd_end"
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--
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2.10.0
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