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From 1a52f1fc0266d438c996789d4addbfac999a6139 Mon Sep 17 00:00:00 2001
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From: Coly Li <colyli@suse.de>
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Date: Wed, 31 Jul 2019 13:29:30 +0800
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Subject: [RHEL7.8 PATCH V2 33/47] udev: add --no-devices option for calling
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'mdadm --detail'
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When creating symlink of a md raid device, the detailed information of
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component disks are unnecessary for rule udev-md-raid-arrays.rules. For
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md raid devices with huge number of component disks (e.g. 1500 DASD
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disks), the detail information of component devices can be very large
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and exceed udev monitor's on-stack message buffer.
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This patch adds '--no-devices' option when calling mdadm by,
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IMPORT{program}="BINDIR/mdadm --detail --no-devices --export $devnode"
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Now the detailed output won't include component disks information,
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and the error message "invalid message length" reported by systemd can
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be removed.
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Signed-off-by: Coly Li <colyli@suse.de>
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Reviewed-by: NeilBrown <neilb@suse.com>
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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---
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udev-md-raid-arrays.rules | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/udev-md-raid-arrays.rules b/udev-md-raid-arrays.rules
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index 5b99d58..d391665 100644
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--- a/udev-md-raid-arrays.rules
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+++ b/udev-md-raid-arrays.rules
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@@ -17,7 +17,7 @@ TEST!="md/array_state", ENV{SYSTEMD_READY}="0", GOTO="md_end"
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ATTR{md/array_state}=="|clear|inactive", ENV{SYSTEMD_READY}="0", GOTO="md_end"
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LABEL="md_ignore_state"
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-IMPORT{program}="BINDIR/mdadm --detail --export $devnode"
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+IMPORT{program}="BINDIR/mdadm --detail --no-devices --export $devnode"
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ENV{DEVTYPE}=="disk", ENV{MD_NAME}=="?*", SYMLINK+="disk/by-id/md-name-$env{MD_NAME}", OPTIONS+="string_escape=replace"
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ENV{DEVTYPE}=="disk", ENV{MD_UUID}=="?*", SYMLINK+="disk/by-id/md-uuid-$env{MD_UUID}"
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ENV{DEVTYPE}=="disk", ENV{MD_DEVNAME}=="?*", SYMLINK+="md/$env{MD_DEVNAME}"
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--
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2.7.5
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