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e10f67e917
If a dm device is suspended, we can't run blkid on it. But earlier rules (e.g. 11-dm-parts.rules) might have imported previously scanned properties from the udev db, in particular if the device had been correctly set up beforehand (DM_UDEV_PRIMARY_SOURCE_FLAG==1). Symlinks for existing ID_FS_xyz properties must be preserved in this case. Otherwise lower-priority devices (such as multipath components) might take over the symlink temporarily. Likewise, we should't stop watching a temporarily suspended, but previously correctly configured dm device. Signed-off-by: Martin Wilck <mwilck@suse.com>
47 lines
1.9 KiB
Plaintext
47 lines
1.9 KiB
Plaintext
# Copyright (C) 2009 Red Hat, Inc. All rights reserved.
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#
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# This file is part of LVM2.
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# Udev rules for device-mapper devices.
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#
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# These rules create symlinks in /dev/disk directory.
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# Symlinks that depend on probing filesystem type,
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# label and uuid are created only if the device is not
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# suspended.
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# "add" event is processed on coldplug only!
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ACTION!="add|change", GOTO="dm_end"
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ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="dm_end"
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ENV{DM_UDEV_DISABLE_DISK_RULES_FLAG}=="1", GOTO="dm_end"
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SYMLINK+="disk/by-id/dm-name-$env{DM_NAME}"
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ENV{DM_UUID}=="?*", SYMLINK+="disk/by-id/dm-uuid-$env{DM_UUID}"
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ENV{DM_SUSPENDED}=="1", ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}=="1", GOTO="dm_link"
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ENV{DM_NOSCAN}=="1", ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}=="1", GOTO="dm_link"
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ENV{DM_SUSPENDED}=="1", GOTO="dm_end"
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ENV{DM_NOSCAN}=="1", GOTO="dm_watch"
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(BLKID_RULE)
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LABEL="dm_link"
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ENV{DM_UDEV_LOW_PRIORITY_FLAG}=="1", OPTIONS="link_priority=-100"
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ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
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ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"
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ENV{ID_PART_ENTRY_UUID}=="?*", SYMLINK+="disk/by-partuuid/$env{ID_PART_ENTRY_UUID}"
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ENV{ID_PART_ENTRY_SCHEME}=="gpt", ENV{ID_PART_ENTRY_NAME}=="?*", SYMLINK+="disk/by-partlabel/$env{ID_PART_ENTRY_NAME}"
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ENV{ID_PART_ENTRY_SCHEME}=="gpt", ENV{ID_PART_GPT_AUTO_ROOT}=="1", SYMLINK+="gpt-auto-root"
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# Add inotify watch to track changes on this device.
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# Using the watch rule is not optimal - it generates a lot of spurious
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# and useless events whenever the device opened for read-write is closed.
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# The best would be to generete the event directly in the tool changing
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# relevant information so only relevant events will be processed
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# (like creating a filesystem, changing filesystem label etc.).
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#
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# But let's use this until we have something better...
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LABEL="dm_watch"
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OPTIONS+="watch"
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LABEL="dm_end"
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