Re: Ativar/Adicionar "spare devices" num Raid

Sat, 09 Feb 2013 09:38:06 -0800

Bom dia a todos!

Alguns pontos a serem analisados:

1) Qual a versão que está usando?

2) Qual o o comando que você criou este RAID?

3) Posta aqui o arquivo /etc/mdadm/mdadm.conf

Abraços
-- 

Kleber Melo
Admin. Sistemas Linux
Advanced Level - Linux Professional Institute Certificate (LPIC-2)
Novell Certified Linux Administrator (CLA)
Novell Data Center Technical Specialist (DCT)
MSN: cyberman...@hotmail.com
Skype: kleber.melo




Em 07-02-2013 17:39, Keppler escreveu:
Olá Julio, abaixo segue a saída dos comandos
Preciso observar uma coisa que acho que não mencionei antes.
1) Você verá que tenho volumes lógicos (LVM)
2) Particionei da seguinte forma:
/boot --> md0
/ --> md1


Em 07-02-2013 16:02, julio lopez escreveu:
Kepler,

Emita os comandos abaixo (nessa sequência) e cole a saída deles para a lista:

dmesg |grep -i sd
ACPI: RSDP 00000000000f0450 00024 (v02 ALASKA)
ACPI: XSDT 00000000badbf068 00054 (v01 ALASKA    A M I 01072009 AMI  00010013)
ACPI: DSDT 00000000badbf150 071B5 (v02 ALASKA    A M I 00000015 INTL 20051117)
ACPI: SSDT 00000000badc6478 00102 (v01 AMICPU     PROC 00000001 MSFT 03000001)
ACPI: EC: Look up EC in DSDT
ACPI: acpi_idle yielding to intel_idleACPI: SSDT 00000000bae0ac18 0038C (v01    AMI      IST 00000001 MSFT 03000001)
ACPI: SSDT 00000000bae0be18 00084 (v01    AMI      CST 00000001 MSFT 03000001)
sd 0:0:0:0: [sda] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
sd 0:0:0:0: [sda] 4096-byte physical blocks
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sd 1:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
sd 1:0:0:0: [sdb] 4096-byte physical blocks
sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sda:
 sdb: sdb1 sdb2
sd 1:0:0:0: [sdb] Attached SCSI disk
 sda1 sda2
sd 0:0:0:0: [sda] Attached SCSI disk
md: bind<sdb2>
md: bind<sda2>
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 1:0:0:0: Attached scsi generic sg1 type 0
md: bind<sdb1>
md: bind<sda1>
 disk 0, wo:1, o:1, dev:sda1
 disk 1, wo:0, o:1, dev:sdb1
sd 1:0:0:0: [sdb] Unhandled sense code
sd 1:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:0:0: [sdb] Sense Key : Medium Error [current] [descriptor]
sd 1:0:0:0: [sdb] Add. Sense: Unrecovered read error - auto reallocate failed
sd 1:0:0:0: [sdb] CDB: Read(10): 28 00 00 08 fd 00 00 03 80 00
sd 1:0:0:0: [sdb] Unhandled sense code
sd 1:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:0:0: [sdb] Sense Key : Medium Error [current] [descriptor]
sd 1:0:0:0: [sdb] Add. Sense: Unrecovered read error - auto reallocate failed
sd 1:0:0:0: [sdb] CDB: Read(10): 28 00 00 08 ff b8 00 00 08 00
md/raid1:md0: sdb: unrecoverable I/O read error for block 587648
 disk 0, wo:1, o:1, dev:sda1
 disk 1, wo:0, o:1, dev:sdb1
 disk 1, wo:0, o:1, dev:sdb1


fdisk -l
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x9bd5c98e

Dispositivo Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   fd  Detecção automática de RAID Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64      121602   976248832   fd  Detecção automática de RAID Linux

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00032c2e

Dispositivo Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1          64      512000   fd  Detecção automática de RAID Linux
Partition 1 does not end on cylinder boundary.
/dev/sdb2              64      121602   976248832   fd  Detecção automática de RAID Linux

Disk /dev/md1: 999.7 GB, 999677620224 bytes
2 heads, 4 sectors/track, 244061919 cylinders
Units = cilindros of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_trcsistema-LogVol00: 104.9 GB, 104857600000 bytes
255 heads, 63 sectors/track, 12748 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_trcsistema-LogVol03: 3527 MB, 3527409664 bytes
255 heads, 63 sectors/track, 428 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/md0: 524 MB, 524275712 bytes
2 heads, 4 sectors/track, 127997 cylinders
Units = cilindros of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_trcsistema-LogVol01: 26.2 GB, 26214400000 bytes
255 heads, 63 sectors/track, 3187 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_trcsistema-LogVol02: 865.1 GB, 865075200000 bytes
255 heads, 63 sectors/track, 105172 cylinders
Units = cilindros of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000


mdadm --detail -scan /dev/md0
/dev/md0:
        Version : 1.0
  Creation Time : Sun Feb  3 16:34:11 2013
     Raid Level : raid1
     Array Size : 511988 (500.07 MiB 524.28 MB)
  Used Dev Size : 511988 (500.07 MiB 524.28 MB)
   Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Thu Feb  7 17:17:12 2013
          State : clean, degraded
 Active Devices : 1
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 1

           Name : trc-sistema.links:0
           UUID : 00844b00:5e01a64d:91172338:de6d7042
         Events : 484

    Number   Major   Minor   RaidDevice State
       0       0        0        0      removed
       1       8       17        1      active sync   /dev/sdb1

       2       8        1        -      spare   /dev/sda1


cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sda1[2](S) sdb1[1]
      511988 blocks super 1.0 [2/1] [_U]
     
md1 : active raid1 sda2[2] sdb2[1]
      976247676 blocks super 1.1 [2/2] [UU]
      bitmap: 0/8 pages [0KB], 65536KB chunk

unused devices: <none>


mdadm /dev/md0 -f /dev/sdxx (xx = o volume com pau)
[root@localhost ~]# mdadm /dev/md0 -f /dev/sda1
mdadm: set /dev/sda1 faulty in /dev/md0

cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sda1[2](F) sdb1[1]
      511988 blocks super 1.0 [2/1] [_U]
     
md1 : active raid1 sda2[2] sdb2[1]
      976247676 blocks super 1.1 [2/2] [UU]
      bitmap: 1/8 pages [4KB], 65536KB chunk

unused devices: <none>


mdadm /dev/md0 -r /dev/sdxx -f (xx = o volume com pau)
[root@localhost ~]# mdadm /dev/md0 -r /dev/sda1 -f
mdadm: hot removed /dev/sda1 from /dev/md0


cat /proc/mdstat
md0 : active raid1 sdb1[1]
      511988 blocks super 1.0 [2/1] [_U]
     
md1 : active raid1 sda2[2] sdb2[1]
      976247676 blocks super 1.1 [2/2] [UU]
      bitmap: 0/8 pages [0KB], 65536KB chunk

unused devices: <none>


mdadm --detail -scan /dev/md0
/dev/md0:
        Version : 1.0
  Creation Time : Sun Feb  3 16:34:11 2013
     Raid Level : raid1
     Array Size : 511988 (500.07 MiB 524.28 MB)
  Used Dev Size : 511988 (500.07 MiB 524.28 MB)
   Raid Devices : 2
  Total Devices : 1
    Persistence : Superblock is persistent

    Update Time : Thu Feb  7 17:30:30 2013
          State : clean, degraded
 Active Devices : 1
Working Devices : 1
 Failed Devices : 0
  Spare Devices : 0

           Name : trc-sistema.links:0
           UUID : 00844b00:5e01a64d:91172338:de6d7042
         Events : 490

    Number   Major   Minor   RaidDevice State
       0       0        0        0      removed
       1       8       17        1      active sync   /dev/sdb1


mdadm /dev/md0 -a /dev/sdxx (xx = o volume com pau)
[root@localhost ~]# mdadm /dev/md0 -a /dev/sda1
mdadm: added /dev/sda1


cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sda1[2] sdb1[1]
      511988 blocks super 1.0 [2/1] [_U]
      [===========>.........]  recovery = 57.7% (295744/511988) finish=0.2min speed=12858K/sec
     
md1 : active raid1 sda2[2] sdb2[1]
      976247676 blocks super 1.1 [2/2] [UU]
      bitmap: 1/8 pages [4KB], 65536KB chunk

unused devices: <none>

e dopois de sincronizado, segue a saída novamente do comando:

Personalities : [raid1]
md0 : active raid1 sda1[2](S) sdb1[1]
      511988 blocks super 1.0 [2/1] [_U]
     
md1 : active raid1 sda2[2] sdb2[1]
      976247676 blocks super 1.1 [2/2] [UU]
      bitmap: 0/8 pages [0KB], 65536KB chunk

unused devices: <none>



cat /etc/mdadm/mdadm.conf
MAILADDR root
AUTO +imsm +1.x -all
ARRAY /dev/md0 level=raid1 num-devices=2 UUID=00844b00:5e01a64d:91172338:de6d7042
ARRAY /dev/md1 level=raid1 num-devices=2 UUID=c89dabef:d9cd0ed6:addc6e0d:9d72c88c


dmesg |grep -i md
Command line: ro root=/dev/mapper/vg_trcsistema-LogVol00 rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=br-abnt2 rd_MD_UUID=c89dabef:d9cd0ed6:addc6e0d:9d72c88c LANG=pt_BR.UTF-8 SYSFONT=latarcyrheb-sun16 crashkernel=128M rd_LVM_LV=vg_trcsistema/LogVol00 rd_LVM_LV=vg_trcsistema/LogVol03 rd_NO_DM rhgb quiet
  AMD AuthenticAMD
RAMDISK: 1f04b000 - 1ffef5ff
  #3 [001f04b000 - 001ffef5ff]          RAMDISK ==> [001f04b000 - 001ffef5ff]
 [ffffea0000000000-ffffea0007dfffff] PMD -> [ffff88002c600000-ffff8800335fffff] on node 0
Kernel command line: ro root=/dev/mapper/vg_trcsistema-LogVol00 rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=br-abnt2 rd_MD_UUID=c89dabef:d9cd0ed6:addc6e0d:9d72c88c LANG=pt_BR.UTF-8 SYSFONT=latarcyrheb-sun16 crashkernel=128M rd_LVM_LV=vg_trcsistema/LogVol00 rd_LVM_LV=vg_trcsistema/LogVol03 rd_NO_DM rhgb quiet
Fixed MDIO Bus: probed
md: bind<sdb2>
md: bind<sda2>
md: raid1 personality registered for level 1
md/raid1:md1: active with 2 out of 2 mirrors
created bitmap (8 pages) for device md1
md1: bitmap initialized from disk: read 1/1 pages, set 0 of 14897 bits
md1: detected capacity change from 0 to 999677620224
 md1: unknown partition table
dracut: Scanning devices md1  for LVM logical volumes vg_trcsistema/LogVol00 vg_trcsistema/LogVol03
md: bind<sdb1>
md/raid1:md0: active with 1 out of 2 mirrors
md0: detected capacity change from 0 to 524275712
 md0: unknown partition table
md: bind<sda1>
md: recovery of RAID array md0
md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery.
md: using 128k window, over a total of 511988k.
EXT4-fs (md0): mounted filesystem with ordered data mode. Opts:
SELinux: initialized (dev md0, type ext4), uses xattr
ata2.00: cmd 60/80:00:00:fd:08/03:00:00:00:00/40 tag 0 ncq 458752 in
ata2.00: cmd 60/80:10:00:fd:08/03:00:00:00:00/40 tag 2 ncq 458752 in
ata2.00: cmd 60/80:00:00:fd:08/03:00:00:00:00/40 tag 0 ncq 458752 in
ata2.00: cmd 60/80:00:00:fd:08/03:00:00:00:00/40 tag 0 ncq 458752 in
ata2.00: cmd 60/80:00:00:fd:08/03:00:00:00:00/40 tag 0 ncq 458752 in
ata2.00: cmd 60/80:00:00:fd:08/03:00:00:00:00/40 tag 0 ncq 458752 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:08:b8:ff:08/00:00:00:00:00/40 tag 1 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
md/raid1:md0: sdb: unrecoverable I/O read error for block 587648
md: md0: recovery done.
md/raid1:md0: Disk failure on sda1, disabling device.
md/raid1:md0: Operation continuing on 1 devices.
md: unbind<sda1>
md: export_rdev(sda1)
md: bind<sda1>
md: recovery of RAID array md0
md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery.
md: using 128k window, over a total of 511988k.
ata2.00: cmd 60/80:88:80:ff:08/00:00:00:00:00/40 tag 17 ncq 65536 in
ata2.00: cmd 60/80:68:80:ff:08/00:00:00:00:00/40 tag 13 ncq 65536 in
ata2.00: cmd 60/80:78:80:ff:08/00:00:00:00:00/40 tag 15 ncq 65536 in
ata2.00: cmd 60/80:10:80:ff:08/00:00:00:00:00/40 tag 2 ncq 65536 in
ata2.00: cmd 60/80:00:80:ff:08/00:00:00:00:00/40 tag 0 ncq 65536 in
ata2.00: cmd 60/80:00:80:ff:08/00:00:00:00:00/40 tag 0 ncq 65536 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
ata2.00: cmd 60/08:00:b8:ff:08/00:00:00:00:00/40 tag 0 ncq 4096 in
md/raid1:md0: sdb: unrecoverable I/O read error for block 587648
md: md0: recovery done.



E após tudo feito, veja como ficou a saída do comando "mdadm -D /dev/md0":
/dev/md0:
        Version : 1.0
  Creation Time : Sun Feb  3 16:34:11 2013
     Raid Level : raid1
     Array Size : 511988 (500.07 MiB 524.28 MB)
  Used Dev Size : 511988 (500.07 MiB 524.28 MB)
   Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Thu Feb  7 17:32:31 2013
          State : clean, degraded
 Active Devices : 1
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 1

           Name : trc-sistema.links:0
           UUID : 00844b00:5e01a64d:91172338:de6d7042
         Events : 505

    Number   Major   Minor   RaidDevice State
       0       0        0        0      removed
       1       8       17        1      active sync   /dev/sdb1

       2       8        1        -      spare   /dev/sda1
                                                  ^^
Como vocês podem notar na linha acima, o device ainda está como "spare":





NOTA: Esse procedimento é o mesmo descrito anteriormente (...que vc já disse que não deu certo). Faça novamente nessa ordem... e como vc já disse, e deve estar pensando: "não vai dar certo de novo"!! Concordo, mas o objetivo é tentarmos obter mais informações DO QUE ESTÁ ACONTECENDO AÍ NO SEU BOX. Assim, cole as saídas na lista para tentarmos achar alguma msg de erro no processo de execução do mdadm, ou outra msg qualquer registrada no syslog (especialmente o último comando).
Aliás... fica aqui uma dica IMPORTANTE para todo problema que tiver nessa plataforma: FUCE NOS LOGS !!!! Primeiro veja se o serviço com problema tem uma saída de log própria na /var/log. Se tiver, examine primeiro esses arquivos. Senão examine o SYSLOG. A PISTA para a solução do problema SEMPRE ESTARÁ LÁ.

Abraço

Julio Lopez

Jd4y - Cristo vai voltar... prepara-te!





De: Keppler <jurgenkepp...@gmail.com>
Para: julio lopez <julio_sm_lo...@yahoo.com.br>
Cc: Lista DEBIAN <debian-user-portuguese@lists.debian.org>
Enviadas: Quinta-feira, 7 de Fevereiro de 2013 8:05
Assunto: Re: Ativar/Adicionar "spare devices" num Raid

Olá Julio, obrigado pelo retorno!
Mas não eu certo não....alguma outra sugestão?

Em 06-02-2013 10:44, julio lopez escreveu:
Olá Keppler!

Segue um tutorialzinho que descreve todos os passos para recuperar um arranjo de discos raid1:

##Status do arranjo
cat /proc/mdstat

##VErificação dos volumes montados
mdadm --detail -scan /dev/md0

#check dos volumes existentes
dmesg |grep sd

##Marca sdb1 (exemplo) como faulty, remove do arranjo e adiciona novamente (o sincronismo é automático)
mdadm /dev/md0 -f /dev/sdb1
ou
mdadm --manage /dev/md0 --fail /dev/sdb1

#remove
mdadm /dev/md0 -r /dev/sdb1 -f
ou
mdadm --manage /dev/md0 --remove /dev/sdb1

#confere qual o tipo de sistema de arquivos (ext3, reiserfs, etc) foi criado o arranjo md0/md1
vim /etc/fstab

#verifica/corrige erros
fsck.ext3 /dev/sdb1

#troca de HD limpo / zerado (mesmo tamanho ou maior)
#criar a particao no novo disco (sdb1) exatamente igual ao outro (sdc1)
sfdisk -d /dev/sdc | sfdisk /dev/sdb
...depois
fdisk -l

#retorna ao arranjo
mdadm /dev/md0 -a /dev/sdb1
ou
mdadm --manage /dev/md0 --add /dev/sdb1

##Verificar andamento do sincronismo
cat /proc/mdstat
Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 scsi/host0/bus0/target1/lun0/part1[2] scsi/host0/bus0/target0/lun0/part1[0]
      35061760 blocks [2/1] [U_]
      [================>....]  recovery = 80.3% (28167964/35061760) finish=2.4min speed=46828K/sec
unused devices: <none>


Abraço,

Julio Lopez

Jd4y - Cristo voltará... prepara-te!


----- Mensagem original -----
De: Keppler <jurgenkepp...@gmail.com>
Para: Lista DEBIAN <debian-user-portuguese@lists.debian.org>
Cc:
Enviadas: Terça-feira, 5 de Fevereiro de 2013 21:51
Assunto: Ativar/Adicionar "spare devices" num Raid

Olá pessoal.
Estou com um problema aqui.
Configurei um Server em Raid-1. Fui fazer um teste para ver realmente a coisa funcionava e removi um dos discos (sda).
Até aí blz, o outro disco assumiu e o sistema voltou "pro ar".
Só que quando fui voltar o disco novamente para o Raid, ele fica somente como "spare".

Abaixo está a sainda do comando: "mdadm -D /dev/md0":
/dev/md0:
        Version : 1.0
  Creation Time : Sun Feb  3 16:34:11 2013
    Raid Level : raid1
    Array Size : 511988 (500.07 MiB 524.28 MB)
  Used Dev Size : 511988 (500.07 MiB 524.28 MB)
  Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Tue Feb  5 22:41:16 2013
          State : clean, degraded
Active Devices : 1
Working Devices : 2
Failed Devices : 0
  Spare Devices : 1

          Name : sistema.local:0
          UUID : 00844b00:5e01a64d:91172338:de6d7042
        Events : 318

    Number  Major  Minor  RaidDevice State
      0      0        0        0      removed
      1      8      17        1      active sync  /dev/sdb1

      2      8        1        -      spare  /dev/sda1

Como vcs podem notar na última linha, mesmo eu tentando adicionar novamente o disco com o comando " mdadm --manage /dev/md0 --add /dev/sda1", o dispositivo "sda1" não voltar para "active sync".

Li um monte de coisas por aí, mas não consegui nada que me ajudasse.

Alguém sabe como faço para voltar este dispositivo para o Raid?

grato,
Jurgen


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