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Server IP : 74.208.127.88 / Your IP : 3.147.103.89 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 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, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /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