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99-systemd.rules: rework SYSTEMD_READY logic for device mapper (v253) #412

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99-systemd.rules: rework SYSTEMD_READY logic for device mapper (v253) #412

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13 changes: 6 additions & 7 deletions rules.d/99-systemd.rules.in
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Original file line number Diff line number Diff line change
Expand Up @@ -18,19 +18,18 @@ SUBSYSTEM=="ubi", TAG+="systemd"

SUBSYSTEM=="block", TAG+="systemd"

# We can't make any conclusions about suspended DM devices so let's just import previous SYSTEMD_READY state and skip other rules
SUBSYSTEM=="block", ENV{DM_SUSPENDED}=="1", IMPORT{db}="SYSTEMD_READY"
SUBSYSTEM=="block", ENV{DM_SUSPENDED}=="1", GOTO="systemd_end"
# When a dm device is first created, it's just an empty container. Ignore it.
# DM_NAME is not set in this case, but it's set on spurious "add" events that occur later.
SUBSYSTEM=="block", ACTION=="add", KERNEL=="dm-*", ENV{DM_NAME}!="?*", ENV{SYSTEMD_READY}="0"

SUBSYSTEM=="block", ACTION=="add", ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", ENV{SYSTEMD_READY}="0"
# DM_UDEV_DISABLE_OTHER_RULES_FLAG==1 means that the device shouldn't be probed.
# Import previous SYSTEMD_READY state.
SUBSYSTEM=="block", ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", ENV{SYSTEMD_READY}=="", IMPORT{db}="SYSTEMD_READY"

# Ignore encrypted devices with no identified superblock on it, since
# we are probably still calling mke2fs or mkswap on it.
SUBSYSTEM=="block", ENV{DM_UUID}=="CRYPT-*", ENV{ID_PART_TABLE_TYPE}=="", ENV{ID_FS_USAGE}=="", ENV{SYSTEMD_READY}="0"

# Explicitly set SYSTEMD_READY=1 for DM devices that don't have it set yet, so that we always have something to import above
SUBSYSTEM=="block", ENV{DM_UUID}=="?*", ENV{SYSTEMD_READY}=="", ENV{SYSTEMD_READY}="1"

# add symlink to GPT root disk
SUBSYSTEM=="block", ENV{ID_PART_GPT_AUTO_ROOT}=="1", ENV{ID_FS_TYPE}!="crypto_LUKS", SYMLINK+="gpt-auto-root"
SUBSYSTEM=="block", ENV{ID_PART_GPT_AUTO_ROOT}=="1", ENV{ID_FS_TYPE}=="crypto_LUKS", SYMLINK+="gpt-auto-root-luks"
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