Download Przyrostowy backup na dysk dedykowany - bezpieczniejsze niż RAID

Jak to działa:
Serwer TS-451 skonfigurowany z 4 dyskami w trybie pojedynczym. Dysk numer 4 jest zarezerwowany tylko do kopii zapasowej kluczowych danych z dysków 1-3. Kopia jest wyzwalana raz dziennie... Każde dyski są skonfigurowane pojedynczo.

Zalety takiego rozwiązania?
Jeśli myślisz, że RAID to backup i załatwia sprawę to jesteś w błędzie.
Pomyśl... Kupiłeś 4 dyski i zrobiłeś z nich RAID. W pracy każdy dysk był utilizowany tak samo przez ostatnie 2 lata. Który z nich zużył się najbardziej? Wszystkie!

Kiedy jeden z dysków będzie na wykończeniu, bierz pod uwagę, że i zaraz kolejne dyski scenariusz śmierci czeka.

W przypadku konfiguracji pojedynczych dysków zamiast równoległej pracy wszystkich w RAID'zie, tylko dysk numer 1 będzie najczęściej używany. Wszystkie codzienne usługi tj. Torrent, Stacja monitoringu i etc... zostaną skierowane na ten dysk. Pozostałe dyski na, których znajdują się multimedia oraz prywatne dane, będą rzadziej wykorzystywane a tym samym zwiększy się ich żywotność.
Mało tego, na dysk numer 4 zostały zaplanowane dzienne kopie co zdecydowanie zwiększy bezpieczeństwo krytycznych danych!

O zastosowaniu RAID i czym on naprawde jest już pisaliśmy na forum wiele razy...

Rozwiązanie:
1. Pobierz makebackup

Code (Bash):

1. cd /share/Public
2. wget http://pool.qnapclub.pl/projects/tools/makebackup/makebackup.tar.gz
3. tar zxvf makebackup.tar.gz && rm makebackup.tar.gz
4. cd .makebackup

2. Edytuj w udziale sieciowym Public/.makebackup pliki backup.conf oraz backup.lst w którym określ katalogi źródłowe, które chcesz archiwizować:

3. Uruchom mkbackup.sh

Code (Bash):

1. ./mkbackup.sh

4. Jeśli wszystko działa w porządku, dodaj skrypt do crontab'a, np. za pomocą CronWeb:

Code (Text):

1. 15      5       *       *       *       sh /share/Public/mkbackup/makebackup.sh

Source code:

Code (Bash):

1. #!/bin/bash
2. : ${NAME=backup}
3. ##
4. ##   Left-To-Right Backup for QNAP
5. ##
6. ##   Copyright © 2014, Silas Mariusz <silas@qnap.com.antispam>
7. ##
8. ##                     QNAP Club Polska
9. ##
10. ##
11. ##   This program is free software; you can redistribute it and/or modify
12. ##   it under the terms of the GNU General Public License as published by
13. ##   the Free Software Foundation; either version 2, or (at your option)
14. ##   any later version.
15. ##
16. ##   This program is distributed in the hope that it will be useful,
17. ##   but WITHOUT ANY WARRANTY; without even the implied warranty of
18. ##   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19. ##   GNU General Public License for more details.
20. ##
21. ##   You should have received a copy of the GNU General Public License
22. ##   along with this program; if not, write to the Free Software Foundation,
23. ##   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24. ##
25. ##   The latest version of this software can be obtained here:
26. ##
27. ##   https://forum.qnap.net.pl/
28. ##
29. ##
30. ##   FILE: backup.sh
31. ##
32. ##   RELEASE: 0.4 (beta)
33. ##   DATE: 2015-05-03
34. ##
35.  
36.  
37. ##   GENERAL VARIABLES
38. [[ ! -d "/var/run" ]] && exit 1
39. LOCK="/var/run/${NAME}.lock"
40. LOCK_DIR="/var/run/${NAME}"
41. RETVAL=0 ; _RETVAL=
42.  
43. ##   Set environment paths ...
44. _PATHS=\
45. /bin:\
46. /sbin:\
47. /usr/bin:\
48. /usr/sbin:\
49. /usr/local/bin:\
50. /usr/local/sbin:\
51. /opt/bin:\
52. /opt/sbin:\
53. /opt/local/bin:\
54. /opt/local/sbin:\
55. :
56.  
57. _LD_PATHS=\
58. /opt/local/lib:\
59. /opt/lib:\
60. :
61.  
62. export PATH=$_PATHS:$PATH:$_PATHS
63. #export LD_LIBRARY_PATH=$_LD_PATHS:$LD_LIBRARY_PATH:$_LD_PATHS
64.  
65. ##   Ansi colors
66. ##   -----------------------------------------------------------------
67. ##   Normal Colors        Bold Colors             # Color
68. ##   ---------------------------------------------#-------------------
69. black='\e[0;30m'    ; bblack='\e[1;30m'     ; # Black
70. red='\e[0;31m'      ; bred='\e[1;31m'   ; # Red
71. green='\e[0;32m'    ; bgreen='\e[1;32m'     ; # Green
72. yellow='\e[0;33m'   ; byellow='\e[1;33m'    ; # Yellow
73. blue='\e[0;34m'     ; bblue='\e[1;34m'  ; # Blue
74. purple='\e[0;35m'   ; bpurple='\e[1;35m'    ; # Purple
75. cyan='\e[0;36m'     ; bcyan='\e[1;36m'  ; # Cyan
76. white='\e[0;37m'    ; bwhite='\e[1;37m'     ; # White
77. ##   ---------------------------------------------#-------------------
78. ##   Background
79. on_black='\e[40m'   ;           # On Black
80. on_red='\e[41m'     ;           # On Red
81. on_green='\e[42m'   ;           # On Green
82. on_yellow='\e[43m'  ;           # On Yellow
83. on_blue='\e[44m'    ;           # On Blue
84. on_purple='\e[45m'  ;           # On Purple
85. on_cyan='\e[46m'    ;           # On Cyan
86. on_white='\e[47m'   ;           # On White
87. ##   ---------------------------------------------#-------------------
88. ##   Colors Presets
89. alert="${bwhite}${on_red}"  ; i_alert="${bred}${on_white}"  #alert
90. note="${bwhite}${on_blue}"  ; i_note="${bblue}${on_white}"  #note
91. info="$note"            ; i_info="$i_note"      #info
92. ##   ---------------------------------------------#-------------------
93. ##   Reset colour/restore default
94. nc="\e[m"
95. ##   ---------------------------------------------#--------[ DONE ]---
96.  
97. ##   Environment
98. fd=0                    # stdin
99. export HOME=/root
100. export TERM=xterm
101. export USER=admin
102. export PWD=/root
103. export EDITOR=/bin/vi
104. export LOGNAME=admin
105.  
106.  
107. : ${AWK=awk}
108.  
109. ##   interactive shell? then keep user attention on the err msg
110. ##   -----------------------------------------------------------------
111. if [ -t "$fd" ] || [ -p /dev/stdin ]; then
112.     echo -n "]0; logman-[QNAP] "
113. fi
114.  
115. ##   Signals
116. SIGNAL_HUP=1        ; SIGNAL_INT=2      ; SIGNAL_QUIT=3     ;   SIGNAL_ILL=4
117. SIGNAL_TRAP=5       ; SIGNAL_ABRT=6     ; SIGNAL_BUS=7      ;   SIGNAL_FPE=8
118. SIGNAL_KILL=9       ; SIGNAL_USR1=10    ; SIGNAL_SEGV=11    ;   SIGNAL_USR2=12
119. SIGNAL_PIPE=13      ; SIGNAL_ALRM=14    ; SIGNAL_TERM=15    ;   SIGNAL_STKFLT=16
120. SIGNAL_CHLD=17      ; SIGNAL_CONT=18    ; SIGNAL_STOP=19    ;   SIGNAL_TSTP=20
121. SIGNAL_TTIN=21      ; SIGNAL_TTOU=22    ; SIGNAL_URG=23     ;   SIGNAL_XCPU=24
122. SIGNAL_XFSZ=25      ; SIGNAL_VTALRM=26  ; SIGNAL_PROF=27    ;   SIGNAL_WINCH=28
123. SIGNAL_IO=29        ; SIGNAL_PWR=30     ; SIGNAL_SYS=31     ;   #End
124.  
125. # uint signal (uint <pid>, int <signal number>|string <signal name>)
126. function signal {
127.     local -i PID=$1 SIGNAL=$2  ## Automatically expands if $1 is a variable.
128.     kill -s "$SIGNAL" "$PID" 2>&"$NULL"
129. }
130.  
131. # debug exec - (if _DEBUG is non zero)
132. function DEBUG()
133. {
134.     [[ "$_DEBUG" == "0" ]] || $@
135. }
136.  
137. function _exit()
138. {
139.     echo -e "$*"
140.     echo
141.  
142.     # interactive shell? then keep user attention on the err msg
143.     if [[ -t "$fd" ]] || [[ -p /dev/stdin ]]; then
144.         echo -n "]0; ! ERROR          - - - - -  " ; sleep 1
145.         echo -n "]0; - - - - -           ERROR ! " ; sleep 1
146.         echo -n "]0;  - - - - -           ERROR! " ; sleep 1
147.         echo -n "]0; - - - - -           ERROR ! " ; sleep 1
148.         echo -n "]0; !ERROR          - - - - -   " ; sleep 1
149.     fi
150.  
151.     exit 1
152. }
153.  
154. #alias strip_esc='sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K|A|B|C]//g"'
155. alias strip_esc='sed -r "s/\x1B[\[|\(]([0-9]{1,2}(;[0-9]{1,2})?)?[m|K|A|B|C|E|J|S|Z|H]//g"'
156. shopt -s expand_aliases
157.  
158. # Message to terminal and system log
159. # ###########################################################################
160. _log() {
161.     local msg_type="info"
162.     local write_msg="/sbin/log_tool -t0 -u$NAME -p127.0.0.1 -mlocalhost -a"
163.     local message="$NAME: ${*:-"Unspecified Notice"}"
164.     [ "$_QUIET" != "1" ] && echo -e "(${green}$msg_type${nc}) $message"
165.     # save to system Event Log only when in DEBUG mode
166.     [[ "$_DEBUG" == "1" ]] && $write_msg "($msg_type) $(echo $message | strip_esc)"
167. }
168.  
169. # Warning message to terminal and system log
170. # ###########################################################################
171. _warn() {
172.     local msg_type="warn"
173.     local write_warn="/sbin/log_tool -t1 -u$NAME -p127.0.0.1 -mlocalhost -a"
174.     local message="$NAME: ${*:-"Unknown Warning"}" && $write_warn "($msg_type) $(echo $message | strip_esc)"
175.     echo -e "(${red}$msg_type${nc}) $message"
176. }
177.  
178. # Write error log message and exit
179. # ###########################################################################
180. _err(){
181.     local msg_type="err!"
182.     local write_err="/sbin/log_tool -t2 -u$NAME -p127.0.0.1 -mlocalhost -a"
183.     local message="$NAME: ${*:-"Unknown Error"}" && $write_err "($msg_type) $(echo $message | strip_esc)"
184.     _exit "(${alert}$msg_type${nc}) $message \n"
185. }
186.  
187. available() {
188.     type -t "$1" >/dev/null && return 0
189.     return 1
190. }
191.  
192. need() {
193.     available "$1" && return 0
194.     _err needed command was not found: $1
195.     exit 1
196. }
197.  
198. alias finddev='getcfg "PhysicalDisk_$DISKNO" pd_sys_name -f /etc/enclosure_0.conf -d error | cut -d \/ -f 3'
199. # Let external disk go sleep...
200. drive_readd() {
201.     _device=$($finddev)
202.  
203.     if [[ "$_device" == "error" ]] || [[ ! -x "/dev/$_device" ]]; then
204.         echo "Hardware rescaning... (About 2 minutes)"
205.         scsihosts=$(ls -1 "/sys/class/scsi_host/" | grep host | tr -d "@" | tac)
206.         for i in $scsihosts ; do
207.             _sd_dev=$(ls -1 /sys/block/ | grep sd | tr -d "/") ; echo Found: $_sd_dev
208.             echo "0 0 0" >"/sys/class/scsi_host/$i/scan" 2>/dev/null
209.             _device=$($finddev)
210.             [[ "$_device" != "error" ]] && [[ -e "/dev/$_device" ]] && break
211.         done
212.  
213.         sleep 10
214.         sync
215.  
216.         _device=$($finddev)
217.         [[ "$_device" == "error" ]] && _err "Physical disk $DISKNO not found in /etc/enclosure_0.conf"
218.     else
219.         _log "HDD $DISKNO: Device: /dev/${green}$_device${nc} Target: ${yellow}$RIGHT${nc}/$POOL"
220.     fi
221. }
222.  
223. # Let external disk go sleep...
224. drive_remove() {
225.     _device=$($finddev)
226.     [[ "$_device" == "error" ]] && return 1
227.     sync
228.     sleep 5
229.     hdparm -S 1 /dev/$_device
230.     hdparm -y /dev/$_device
231.  
232.     umount /dev/$_device
233.     echo offline > /sys/block/$_device/device/state
234.     echo 1 > /sys/block/$_device/device/delete
235.     return 0
236. }
237.  
238. need ipkg
239. ipkg update                  2>&1 >/dev/null
240. ipkg install findutils       2>&1 >/dev/null
241. ipkg install rsync           2>&1 >/dev/null
242. ipkg install binutils        2>&1 >/dev/null
243. ipkg install util-linux-ng   2>&1 >/dev/null
244.  
245. need rsync
246. need ionice
247. need find
248.  
249. DATE=`date +%Y-%m-%d` ;     TIME=`date +%H:%M:%S` ;     NOW=`date +%Y%m%d_%H%M%S`
250.  
251. # ###########################################################################
252. # Basics
253. # ###########################################################################
254.  
255. # find my name and real current directory
256. # ###########################################################################
257. PROGNAME=`type $0 | awk '{print $3}'`  # search for executable on path
258.  
259. PROGDIR=`dirname $PROGNAME`            # extract directory of program
260. PROGNAME=`basename $PROGNAME`          # base name of program
261.  
262. [ "$PROGDIR" == "." ] && PROGDIR=`cd $PROGDIR && pwd || echo $PROGDIR`
263.  
264. Int_dPWD=`cd $PROGDIR && pwd || echo $PROGDIR`
265. if [ "${Int_dPWD}" = "/etc/init.d" ] || [ "${Int_dPWD}" = "/etc/rcS.d" ] || [ "${Int_dPWD}" = "/etc/rcK.d" ]; then
266.     [ -L "${PROGDIR}/${PROGNAME}" ] && {
267.         _SLINK=$(readlink ${PROGDIR}/${PROGNAME})
268.         PROGDIR=`dirname ${_SLINK}`
269.         PROGNAME=`basename ${_SLINK}`
270. }
271. fi
272.  
273. # Fully qualify directory path (remove relative components and symlinks)
274. # WARNING: The "bash" "pwd" builtin does not resolve symbolic links
275. # "sh" (as a link to "bash") also does not,   but "csh" does handle it.
276. # Symbolic link removal however is not critical.
277. ORIGDIR=`pwd`                                 # original directory (builtin)
278. PROGDIR=`cd $PROGDIR && pwd || echo $PROGDIR` # program directory
279.  
280. # Results...
281. #    $ORIGDIR    -- where the users was when called
282. #    $PROGDIR    -- script directory location (and now current directory)
283. #    $PROGNAME   -- This scripts executable name
284.  
285.  
286. # alternatively use this...
287.  
288. # Get the fully qualified path to the script
289. # ###########################################################################
290. case $0 in
291.     /*)
292.         SCRIPT="$0"
293.         ;;
294.     *)
295.         PWD=`pwd`
296.         SCRIPT="$PWD/$0"
297.         ;;
298. esac
299.  
300. # Change spaces to ":" so the tokens can be parsed.
301. SCRIPT=`echo $SCRIPT | sed -e 's; ;:;g'`
302. # Get the real path to this script, resolving any symbolic links
303. TOKENS=`echo $SCRIPT | sed -e 's;/; ;g'`
304. REALPATH=
305. for C in $TOKENS; do
306.     REALPATH="$REALPATH/$C"
307.     while [ -h "$REALPATH" ] ; do
308.         LS="`ls -ld "$REALPATH"`"
309.         LINK="`expr "$LS" : '.*-> \(.*\)$'`"
310.         if expr "$LINK" : '/.*' > /dev/null; then
311.             REALPATH="$LINK"
312.         else
313.             REALPATH="`dirname "$REALPATH"`""/$LINK"
314.         fi
315.     done
316. done
317. # Change ":" chars back to spaces.
318. REALPATH=`echo $REALPATH | sed -e 's;:; ;g'`
319. REALPATH="`dirname "$REALPATH"`"
320. [ "`basename $REALPATH`" == "." ] && \
321.     REALPATH="`echo $REALPATH | awk '{$0=substr($0,1,length($0)-2); print $0}'`"
322.  
323. # Change the current directory to the location of the script
324. PROGDIR="`cd $REALPATH && pwd || echo $PROGDIR`"
325. cd "$PROGDIR"
326.  
327.  
328. ##   LOG PATH
329. MKBAKCONF="/share/Public/.makebackup"
330. [[ -d "$MKBAKCONF" ]] || mkdir "$MKBAKCONF"
331.  
332. LOGDIR="$MKBAKCONF"
333. LOGFILE="$LOGDIR/rsync_`date +%Y-%m-%d`.log"
334.  
335. SOURCES="$MKBAKCONF/backup.lst"
336. if [ ! -f "$SOURCES" ]; then
337.     echo -e "/share/Public/directory1\n/share/Multimedia/Family\n/etc\n..." > $SOURCES.example
338.     _log "Create list file with source directories to backup: ${white}$SOURCES${nc}"
339.     _err "Backup list not found $SOURCES"
340.     exit 1
341. fi
342. LEFT=()
343. s=0
344. while read line; do
345.     #LEFT[s]="$(echo -e "$line" | sed 's/ /\\ /g')"
346.     LEFT[s]="$(echo -e "$line")"
347.     s=$(expr $s + 1)
348. done < "$SOURCES"
349. echo -e "${bwhite}Source list${nc}: \n${LEFT[@]} \n"
350.  
351. CONFIG="$MKBAKCONF/backup.conf"
352. [ -f "$CONFIG" ] || _err "Config file not found $CONFIG"
353. RIGHT=$(getcfg Backup RIGHT -f "$CONFIG" -d error)
354. echo -e "${bwhite}Remote path${nc}: \n$RIGHT     \n"
355.  
356. DISKNO=$(getcfg Backup DISKNO -f "$CONFIG" -d error)
357. SPINDRIVE=$(getcfg Backup SPINDRIVE -f "$CONFIG" -d 0)
358.  
359. IGNORE="$MKBAKCONF/ignore.lst"
360. [[ -f "$IGNORE" ]] || _err "Ignore list file not found $IGNORE"
361.  
362. [[ -d "$RIGHT" ]] || mkdir "$RIGHT"
363. [[ -d "$RIGHT" ]] || _err "Destination directory path is wrong..."
364.  
365.  
366.  
367. # ###########################################################################
368. # Global Variables
369. # ###########################################################################
370. # Time Measure Command
371. STA_NOWTIME="date +%s"
372.  
373. ## func: Elapsed Time (calculate diff)
374. ## ###########################################################################
375. elapsedTime() {
376.     local _startTime="$1"
377.     local _endTime="$2"
378.     echo "$(($_endTime - $_startTime))"
379. }
380.  
381. #-----------------------------------------------------------------------
382. # Private Signal Traps Functions {{{2
383. #
384. # DANGER: SIGKILL cannot be trapped. So, try not to `kill -9 PID` or
385. #         there will be *NO CLEAN UP*. You'll have to manually remove
386. #         any locks in place.
387. #-----------------------------------------------------------------------
388. function __make_locks {
389.         if [ ! -e "${LOCK}" ] ; then
390.                 touch "${LOCK}"
391.         else
392.                 _err application already started... Lock found ${LOCK}
393.         fi
394. }
395.  
396. function __clean_locks {
397.         [ -f "$LOCK" ] && rm "$LOCK"
398. }
399. function __sig_exit {
400.         __clean_locks
401. }
402.  
403. function __sig_int {
404.         echo -e "\n${warn} WARNING: ${nc} ${bred}SIGINT ${nc}${red}caught${nc}"
405.         __clean_locks
406.         exit 1002
407. }
408.  
409. function __sig_quit {
410.         echo -e "\n${bpurple} SIGQUIT ${nc}${purple}caught${nc}"
411.         __clean_locks
412.         exit 1003
413. }
414.  
415. function __sig_term {
416.         echo -e "\n${warn} WARNING: ${nc} ${bred}SIGTERM ${nc}${red}caught${nc}"
417.         __clean_locks
418.         exit 1015
419. }
420.  
421. # Set TRAPs
422. trap __sig_exit EXIT    # SIGEXIT
423. #trap __sig_int INT      # SIGINT
424. trap __sig_quit QUIT    # SIGQUIT
425. trap __sig_term TERM    # SIGTERM
426.  
427. # Create lock file to prevent double run
428. __make_locks
429.  
430. # Readd/remount disk drive
431. [[ "$SPINDRIVE" == "1" ]] && drive_readd
432.  
433. # start time
434. _startMeasureTime=$($STA_NOWTIME)
435.  
436. cd "$RIGHT" && \
437. $PROGDIR/sayebackup.sh  \
438.     --inc           \
439.     --relative      \
440.     -C "$RIGHT/"        \
441.     -E "$IGNORE"        \
442.     -o bak          \
443.     "${LEFT[@]}"        \
444.     | tee -a "$LOGFILE"
445.  
446. _RETVAL=${PIPESTATUS[0]}
447. if [ $_RETVAL -eq 0 ]; then
448.     _log "Sync done: -> $RIGHT"
449. else
450.     [ "$_QUIET" != "1" ] && _warn "error occured while rsync: -> $RIGHT"
451.     RETVAL=1
452. fi
453.  
454. # end time
455. _endMeasureTime=$($STA_NOWTIME)
456. _diffMeasure=$(elapsedTime $_startMeasureTime $_endMeasureTime)
457. _log "Backup job done in $_diffMeasure seconds."
458.  
459. __clean_locks
460.  
461. # Force remove drive from OS/spin down
462. if [ "$SPINDRIVE" == "1" ]; then
463.     drive_remove
464.     _RETVAL=$?
465.     if [ $_RETVAL -eq 0 ]; then
466.         _log "Disk disabled"
467.     else
468.         _warn "Failed while trying to disable disk drive"
469.     fi
470. fi
471.  
472. [ $RETVAL -ne 0 ] && _err "Errors occured."
473. exit $RETVAL
474.  
475. # Parent process has died so we also better die.
476. exit 0

Rezultat
Musze się pochwalić po jednym dniu działania skryptu.


Docelowo ma wyłączać fizycznie dysk po wykonaniu kopii i ponownie go przywrócić... Ale... jeszcze nie jest to do końca zaimplementowane. Ale skrypt śmiało możecie używać jeśli cenicie sobie bezpieczeństwo danych.

Brakuje regułki przywracającej wolumin:

Code (Bash):

1. [~] # df
2. Filesystem                Size      Used Available Use% Mounted on
3. none                    200.0M    148.0M     52.0M  74% /
4. devtmpfs                  1.9G      4.0k      1.9G   0% /dev
5. tmpfs                    64.0M      3.6M     60.4M   6% /tmp
6. tmpfs                     1.9G      4.0k      1.9G   0% /dev/shm
7. /dev/md9                509.5M    108.2M    401.3M  21% /mnt/HDA_ROOT
8. /dev/mapper/cachedev1     6.8T     28.2G      6.7T   0% /share/CACHEDEV1_DATA
9. /dev/md13               371.0M    282.3M     88.7M  76% /mnt/ext
10. /dev/mapper/cachedev2   909.0G     76.0M    908.5G   0% /share/CACHEDEV2_DATA
11. [~] # umount /dev/mapper/cachedev2
12. [~] # dmsetup remove cachedev2
13. [~] # vgchange -an vg2
14.   0 logical volume(s) in volume group "vg2" now active
15. [~] # lvs
16.   LV    VG   Attr     LSize   Pool Origin Data%  Move Log Copy%  Convert
17.   lv1   vg1  Vwi-aot-   6.80t tp1         100.00
18.   lv544 vg1  -wi-----  20.00g
19.   tp1   vg1  twi-a-t-   7.22t              94.13
20.   lv2   vg2  -wi----- 912.80g
21.   lv545 vg2  -wi-----   9.22g
22. [~] # mdadm -S /dev/md2
23. mdadm: stopped /dev/md2
24. [~] #
25. [~] # echo 1 > /sys/block/sde/device/delete

Code (Bash):

1. [~] # echo "0 0 0" > /sys/class/scsi_host/host3/scan
2. [~] #
3. [~] # storage_util --sys_startup_p2
4. sys_startup_p2:got called count = 3
5. Perform NAS model checking...
6. NAS model match, skip model migration.
7.  
8. [~] # df
9. Filesystem                Size      Used Available Use% Mounted on
10. none                    200.0M    148.1M     51.9M  74% /
11. devtmpfs                  1.9G      4.0k      1.9G   0% /dev
12. tmpfs                    64.0M      3.6M     60.4M   6% /tmp
13. tmpfs                     1.9G      4.0k      1.9G   0% /dev/shm
14. /dev/md9                509.5M    108.2M    401.3M  21% /mnt/HDA_ROOT
15. /dev/mapper/cachedev1     6.8T     28.2G      6.7T   0% /share/CACHEDEV1_DATA
16. /dev/md13               371.0M    282.3M     88.7M  76% /mnt/ext
17. /dev/mapper/cachedev2   909.0G     76.0M    908.5G   0% /share/CACHEDEV2_DATA

 

TODO: