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Server : LiteSpeed System : Linux srv104790275 5.15.0-161-generic #171-Ubuntu SMP Sat Oct 11 08:17:01 UTC 2025 x86_64 User : dewac4139 ( 1077) PHP Version : 8.0.30 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory : /proc/thread-self/root/lib/udev/ |
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#!/bin/sh
#
# This program reads the bcache superblock on bcacheX slaves to extract the
# dev.uuid and dev.label which refer to a specific backing device.
#
# It integrates with udev 'import' by writing CACHED_UUID=X and optionally
# CACHED_LABEL=X for the backing device of the provided bcache device.
# Ignore caching devices by skipping unless sb.version=1
#
# There is 1 and only 1 backing device (slaves/*) for a bcache device.
TEMPNODE=${1} # /dev/bcacheN
DEVNAME=${TEMPNODE##*/} # /dev/bcacheN -> bcacheN
for slave in "/sys/class/block/$DEVNAME/slaves"/*; do
[ -d "$slave" ] || continue
/usr/sbin/bcache-super-show "/dev/${slave##*/}" |
awk '$1 == "sb.version" { sbver=$2; }
$1 == "dev.uuid" { uuid=$2; }
$1 == "dev.label" && $2 != "(empty)" { label=$2; }
END {
if (sbver == 1 && uuid) {
print("CACHED_UUID=" uuid)
if (label) print("CACHED_LABEL=" label)
exit(0)
}
exit(1);
}'
# awk exits 0 if it found a backing device.
[ $? -eq 0 ] && exit 0
done