Como fazer o Linux ignorar completamente uma unidade SCSI?

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Semelhante a esta pergunta Eu estou interessado em ignorar completamente uma unidade, mas no meu caso é uma unidade que é exposta ao sistema como uma unidade SCSI. Eu tenho duas unidades de 21 unidades no servidor falhando e falhando: 

[2524080.689492] scsi 0:0:90900:0: Direct-Access     ATA      ST3000DM001-1CH1 CC43 PQ: 0 ANSI: 6
[2524080.689502] scsi 0:0:90900:0: SATA: handle(0x000d), sas_addr(0x5003048001f298cf), phy(15), device_name(0x0000000000000000)
[2524080.689506] scsi 0:0:90900:0: SATA: enclosure_logical_id(0x5003048001f298ff), slot(3)
[2524080.689594] scsi 0:0:90900:0: atapi(n), ncq(y), asyn_notify(n), smart(y), fua(y), sw_preserve(y)
[2524080.690671] sd 0:0:90900:0: tag#1 CDB: Test Unit Ready 00 00 00 00 00 00
[2524080.690680] mpt2sas_cm0:   sas_address(0x5003048001f298cf), phy(15)
[2524080.690683] mpt2sas_cm0:   enclosure_logical_id(0x5003048001f298ff),slot(3)
[2524080.690686] mpt2sas_cm0:   handle(0x000d), ioc_status(success)(0x0000), smid(17)
[2524080.690695] mpt2sas_cm0:   request_len(0), underflow(0), resid(0)
[2524080.690698] mpt2sas_cm0:   tag(65535), transfer_count(0), sc->result(0x00000000)
[2524080.690701] mpt2sas_cm0:   scsi_status(check condition)(0x02), scsi_state(autosense valid )(0x01)
[2524080.690704] mpt2sas_cm0:   [sense_key,asc,ascq]: [0x06,0x29,0x00], count(18)
[2524080.690728] sd 0:0:90900:0: Attached scsi generic sg0 type 0
[2524080.691269] sd 0:0:90900:0: [sdb] 5860533168 512-byte logical blocks: (3.00 TB/2.73 TiB)
[2524080.691285] sd 0:0:90900:0: [sdb] 4096-byte physical blocks
[2524111.163712] sd 0:0:90900:0: attempting task abort! scmd(ffff880869121800)
[2524111.163722] sd 0:0:90900:0: tag#2 CDB: Mode Sense(6) 1a 00 3f 00 04 00
[2524111.163729] scsi target0:0:90900: handle(0x000d), sas_address(0x5003048001f298cf), phy(15)
[2524111.163733] scsi target0:0:90900: enclosure_logical_id(0x5003048001f298ff), slot(3)
[2524111.442310] sd 0:0:90900:0: device_block, handle(0x000d)
[2524113.442331] sd 0:0:90900:0: device_unblock and setting to running, handle(0x000d)
[2524114.939280] sd 0:0:90900:0: task abort: SUCCESS scmd(ffff880869121800)
[2524114.939358] sd 0:0:90900:0: [sdb] Write Protect is off
[2524114.939366] sd 0:0:90900:0: [sdb] Mode Sense: 00 00 00 00
[2524114.939444] sd 0:0:90900:0: [sdb] Asking for cache data failed
[2524114.939501] sd 0:0:90900:0: [sdb] Assuming drive cache: write through
[2524114.940380] sd 0:0:90900:0: [sdb] Read Capacity(16) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[2524114.940387] sd 0:0:90900:0: [sdb] Sense not available.
[2524114.940566] sd 0:0:90900:0: [sdb] Read Capacity(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[2524114.940570] sd 0:0:90900:0: [sdb] Sense not available.
[2524114.940778] sd 0:0:90900:0: [sdb] Attached SCSI disk
[2524114.984489] mpt2sas_cm0: removing handle(0x000d), sas_addr(0x5003048001f298cf)
[2524114.984494] mpt2sas_cm0: removing : enclosure logical id(0x5003048001f298ff), slot(3)
[2524134.939383] mpt2sas_cm0: log_info(0x31111000): originator(PL), code(0x11), sub_code(0x1000)
[2524134.940116] mpt2sas_cm0: removing handle(0x000e), sas_addr(0x5003048001f298d0)
[2524134.940122] mpt2sas_cm0: removing enclosure logical id(0x5003048001f298ff), slot(4)
[2524153.940404] scsi 0:0:90902:0: Direct-Access     ATA      ST3000DM001-1CH1 CC43 PQ: 0 ANSI: 6
[2524153.940418] scsi 0:0:90902:0: SATA: handle(0x000d), sas_addr(0x5003048001f298cf), phy(15), device_name(0x0000000000000000)
[2524153.940423] scsi 0:0:90902:0: SATA: enclosure_logical_id(0x5003048001f298ff), slot(3)
[2524153.940699] scsi 0:0:90902:0: atapi(n), ncq(y), asyn_notify(n), smart(y), fua(y), sw_preserve(y)
[2524153.942194] sd 0:0:90902:0: tag#0 CDB: Test Unit Ready 00 00 00 00 00 00
[2524153.942205] mpt2sas_cm0:   sas_address(0x5003048001f298cf), phy(15)
[2524153.942208] mpt2sas_cm0:   enclosure_logical_id(0x5003048001f298ff),slot(3)
[2524153.942212] mpt2sas_cm0:   handle(0x000d), ioc_status(success)(0x0000), smid(12)
[2524153.942214] mpt2sas_cm0:   request_len(0), underflow(0), resid(0)
[2524153.942217] mpt2sas_cm0:   tag(65535), transfer_count(0), sc->result(0x00000000)
[2524153.942220] mpt2sas_cm0:   scsi_status(check condition)(0x02), scsi_state(autosense valid )(0x01)
[2524153.942223] mpt2sas_cm0:   [sense_key,asc,ascq]: [0x06,0x29,0x00], count(18)
[2524153.942361] sd 0:0:90902:0: Attached scsi generic sg0 type 0
[2524153.942833] sd 0:0:90902:0: [sdb] 5860533168 512-byte logical blocks: (3.00 TB/2.73 TiB)
[2524153.942840] sd 0:0:90902:0: [sdb] 4096-byte physical blocks
[2524154.190159] scsi 0:0:90903:0: Direct-Access     ATA      ST3000DM001-1CH1 CC43 PQ: 0 ANSI: 6
[2524154.190174] scsi 0:0:90903:0: SATA: handle(0x0022), sas_addr(0x5003048001ec55ed), phy(13), device_name(0x0000000000000000)
[2524154.190179] scsi 0:0:90903:0: SATA: enclosure_logical_id(0x5003048001ec55ff), slot(1)
[2524154.190368] scsi 0:0:90903:0: atapi(n), ncq(y), asyn_notify(n), smart(y), fua(y), sw_preserve(y)
[2524154.191634] sd 0:0:90903:0: tag#1 CDB: Test Unit Ready 00 00 00 00 00 00
[2524154.191639] mpt2sas_cm0:   sas_address(0x5003048001ec55ed), phy(13)
[2524154.191642] mpt2sas_cm0:   enclosure_logical_id(0x5003048001ec55ff),slot(1)
[2524154.191645] mpt2sas_cm0:   handle(0x0022), ioc_status(success)(0x0000), smid(12)
[2524154.191648] mpt2sas_cm0:   request_len(0), underflow(0), resid(0)
[2524154.191651] mpt2sas_cm0:   tag(65535), transfer_count(0), sc->result(0x00000000)
[2524154.191654] mpt2sas_cm0:   scsi_status(check condition)(0x02), scsi_state(autosense valid )(0x01)
[2524154.191657] mpt2sas_cm0:   [sense_key,asc,ascq]: [0x06,0x29,0x00], count(18)
[2524154.191800] sd 0:0:90903:0: Attached scsi generic sg3 type 0
[2524154.192211] sd 0:0:90903:0: [sdd] 5860533168 512-byte logical blocks: (3.00 TB/2.73 TiB)
[2524154.192219] sd 0:0:90903:0: [sdd] 4096-byte physical blocks

Este é, no nosso caso, um servidor antigo que decidimos não atualizar / corrigir. E agora estou pensando em não remover os drives antigos, apenas deixando-os dentro, diminuindo o array e desabilitando-os. A matriz não está cheia e estamos usando-a apenas como um local de backup adicional para alguns outros servidores.

Então, sendo eu preguiçoso e não querendo ir a uma sala de servidores, existe uma maneira de desabilitar essas unidades e seguir em frente? : -)

Mais informações sobre o sistema:

lspci -nn -v -s 05:00.0 : 

05:00.0 Serial Attached SCSI controller [0107]: LSI Logic / Symbios Logic SAS2308 PCI-Express Fusion-MPT SAS-2 [1000:0087] (rev 05)
    Subsystem: LSI Logic / Symbios Logic SAS2308 PCI-Express Fusion-MPT SAS-2 [1000:3020]
    Flags: bus master, fast devsel, latency 0, IRQ 29
    I/O ports at 7000 [size=256]
    Memory at df640000 (64-bit, non-prefetchable) [size=64K]
    Memory at df600000 (64-bit, non-prefetchable) [size=256K]
    Expansion ROM at df500000 [disabled] [size=1M]
    Capabilities: [50] Power Management version 3
    Capabilities: [68] Express Endpoint, MSI 00
    Capabilities: [d0] Vital Product Data
    Capabilities: [a8] MSI: Enable- Count=1/1 Maskable- 64bit+
    Capabilities: [c0] MSI-X: Enable+ Count=16 Masked-
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [1e0] #19
    Capabilities: [1c0] Power Budgeting <?>
    Capabilities: [190] #16
    Capabilities: [148] Alternative Routing-ID Interpretation (ARI)
    Kernel driver in use: mpt3sas
    Kernel modules: mpt3sas

lsscsi -v : 

[0:0:3:0]    disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdc 
  dir: /sys/bus/scsi/devices/0:0:3:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:2/end_device-0:0:2/target0:0:3/0:0:3:0]
[0:0:6:0]    disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdf 
  dir: /sys/bus/scsi/devices/0:0:6:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:5/end_device-0:0:5/target0:0:6/0:0:6:0]
[0:0:7:0]    disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdg 
  dir: /sys/bus/scsi/devices/0:0:7:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:6/end_device-0:0:6/target0:0:7/0:0:7:0]
[0:0:8:0]    disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdh 
  dir: /sys/bus/scsi/devices/0:0:8:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:7/end_device-0:0:7/target0:0:8/0:0:8:0]
[0:0:11:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdi 
  dir: /sys/bus/scsi/devices/0:0:11:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:10/end_device-0:0:10/target0:0:11/0:0:11:0]
[0:0:12:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdj 
  dir: /sys/bus/scsi/devices/0:0:12:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:11/end_device-0:0:11/target0:0:12/0:0:12:0]
[0:0:13:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdk 
  dir: /sys/bus/scsi/devices/0:0:13:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:12/end_device-0:0:12/target0:0:13/0:0:13:0]
[0:0:15:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdl 
  dir: /sys/bus/scsi/devices/0:0:15:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:14/end_device-0:0:14/target0:0:15/0:0:15:0]
[0:0:16:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdm 
  dir: /sys/bus/scsi/devices/0:0:16:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:15/end_device-0:0:15/target0:0:16/0:0:16:0]
[0:0:18:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdn 
  dir: /sys/bus/scsi/devices/0:0:18:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:17/end_device-0:0:17/target0:0:18/0:0:18:0]
[0:0:20:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdo 
  dir: /sys/bus/scsi/devices/0:0:20:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:19/end_device-0:0:19/target0:0:20/0:0:20:0]
[0:0:21:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdp 
  dir: /sys/bus/scsi/devices/0:0:21:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:20/end_device-0:0:20/target0:0:21/0:0:21:0]
[0:0:22:0]   enclosu LSI CORP SAS2X36          0717  -        
  dir: /sys/bus/scsi/devices/0:0:22:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:21/end_device-0:0:21/target0:0:22/0:0:22:0]
[0:0:23:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdq 
  dir: /sys/bus/scsi/devices/0:0:23:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:1/expander-0:1/port-0:1:1/end_device-0:1:1/target0:0:23/0:0:23:0]
[0:0:24:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdr 
  dir: /sys/bus/scsi/devices/0:0:24:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:1/expander-0:1/port-0:1:2/end_device-0:1:2/target0:0:24/0:0:24:0]
[0:0:25:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sds 
  dir: /sys/bus/scsi/devices/0:0:25:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:1/expander-0:1/port-0:1:3/end_device-0:1:3/target0:0:25/0:0:25:0]
[0:0:26:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdt 
  dir: /sys/bus/scsi/devices/0:0:26:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:1/expander-0:1/port-0:1:4/end_device-0:1:4/target0:0:26/0:0:26:0]
[0:0:28:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdu 
  dir: /sys/bus/scsi/devices/0:0:28:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:1/expander-0:1/port-0:1:6/end_device-0:1:6/target0:0:28/0:0:28:0]
[0:0:30:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdw 
  dir: /sys/bus/scsi/devices/0:0:30:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:1/expander-0:1/port-0:1:8/end_device-0:1:8/target0:0:30/0:0:30:0]
[0:0:31:0]   disk    ATA      ST3000DM001-1CH1 CC43  /dev/sdx 
  dir: /sys/bus/scsi/devices/0:0:31:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:1/expander-0:1/port-0:1:9/end_device-0:1:9/target0:0:31/0:0:31:0]
[0:0:34:0]   enclosu LSI CORP SAS2X28          0717  -        
  dir: /sys/bus/scsi/devices/0:0:34:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:1/expander-0:1/port-0:1:12/end_device-0:1:12/target0:0:34/0:0:34:0]
[0:0:25856:0]disk    ATA      ST3000DM001-1CH1 CC43  /dev/sda 
  dir: /sys/bus/scsi/devices/0:0:25856:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:14357/end_device-0:0:14357/target0:0:25856/0:0:25856:0]
[0:0:98760:0]disk    ATA      ST3000DM001-1CH1 CC43  -        
  dir: /sys/bus/scsi/devices/0:0:98760:0  [/sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0/port-0:0/expander-0:0/port-0:0:60931/end_device-0:0:60931/target0:0:98760/0:0:98760:0]
[2:0:0:0]    disk    ATA      PLEXTOR PX-128M5 1.00  /dev/sdy 
  dir: /sys/bus/scsi/devices/2:0:0:0  [/sys/devices/pci0000:00/0000:00:1f.2/ata2/host2/target2:0:0/2:0:0:0]

lsscsi -Hv : 

[0]    mpt2sas       
  dir: /sys/class/scsi_host//host0
  device dir: /sys/devices/pci0000:00/0000:00:03.0/0000:05:00.0/host0
[1]    ahci          
  dir: /sys/class/scsi_host//host1
  device dir: /sys/devices/pci0000:00/0000:00:1f.2/ata1/host1
[2]    ahci          
  dir: /sys/class/scsi_host//host2
  device dir: /sys/devices/pci0000:00/0000:00:1f.2/ata2/host2
[3]    ahci          
  dir: /sys/class/scsi_host//host3
  device dir: /sys/devices/pci0000:00/0000:00:1f.2/ata3/host3
[4]    ahci          
  dir: /sys/class/scsi_host//host4
  device dir: /sys/devices/pci0000:00/0000:00:1f.2/ata4/host4
[5]    ahci          
  dir: /sys/class/scsi_host//host5
  device dir: /sys/devices/pci0000:00/0000:00:1f.2/ata5/host5
[6]    ahci          
  dir: /sys/class/scsi_host//host6
  device dir: /sys/devices/pci0000:00/0000:00:1f.2/ata6/host6

smp_discover /dev/bsg/expander-0:0 : 

  phy   0:S:attached:[500605b00507dd20:03  i(SSP+STP+SMP)]  6 Gbps
  phy   1:S:attached:[500605b00507dd20:02  i(SSP+STP+SMP)]  6 Gbps
  phy   2:S:attached:[500605b00507dd20:01  i(SSP+STP+SMP)]  6 Gbps
  phy   3:S:attached:[500605b00507dd20:00  i(SSP+STP+SMP)]  6 Gbps
  phy  12:U:attached:[5003048001f298cc:00  t(SATA)]  6 Gbps
  phy  13:U:attached:[5003048001f298cd:00  t(SATA)]  6 Gbps
  phy  14:U:attached:[5003048001f298ce:00  t(SATA)]  6 Gbps
  phy  17:U:attached:[5003048001f298d1:00  t(SATA)]  6 Gbps
  phy  19:U:attached:[5003048001f298d3:00  t(SATA)]  6 Gbps
  phy  20:U:attached:[5003048001f298d4:00  t(SATA)]  6 Gbps
  phy  21:U:attached:[5003048001f298d5:00  t(SATA)]  6 Gbps
  phy  22:U:attached:[5003048001f298d6:00  t(SATA)]  6 Gbps
  phy  23:U:attached:[5003048001f298d7:00  t(SATA)]  6 Gbps
  phy  25:U:attached:[5003048001f298d9:00  t(SATA)]  6 Gbps
  phy  26:U:attached:[5003048001f298da:00  t(SATA)]  6 Gbps
  phy  27:U:attached:[5003048001f298db:00  t(SATA)]  6 Gbps
  phy  28:U:attached:[5003048001f298dc:00  t(SATA)]  6 Gbps
  phy  29:U:attached:[5003048001f298dd:00  t(SATA)]  6 Gbps
  phy  31:U:attached:[5003048001f298df:00  t(SATA)]  6 Gbps
  phy  32:U:attached:[5003048001f298e0:00  t(SATA)]  6 Gbps
  phy  33:U:attached:[5003048001f298e1:00  t(SATA)]  6 Gbps
  phy  34:U:attached:[5003048001f298e2:00  t(SATA)]  6 Gbps
  phy  35:U:attached:[5003048001f298e3:00  t(SATA)]  6 Gbps
  phy  36:D:attached:[5003048001f298fd:00  V i(SSP+SMP) t(SSP)]  6 Gbps
    
por Mitar 18.03.2017 / 06:06

2 respostas

4

Os números muito altos de dispositivos SCSI ( scsi 0:0:90903:0 ) mostram que há um problema neste caso em que o hardware continua a perder & reinicializando a unidade.

O hardware MPT SAS faz a maior parte da re-inicialização aqui, então não podemos controlar totalmente isso a partir do Kernel. Separadamente, você mencionou ter 21 drives, então eles provavelmente estão atrás de um ou mais expansores SAS.

A questão torna-se então, é possível, no software, desabilitar uma porta em um expansor SAS?

Se o expansor realmente suportar (acho que era opcional no padrão), então sim!

O pacote em questão é smp_utils . sg3_utils também será útil).

O que você quer é:

  1. Descobrir o dispositivo expansor conforme a manpage acima (provavelmente ls /dev/bsg/expand* )

  2. Confirme se os discos defeituosos estão anexados ao phys do dmesg: smp_discover /dev/bsg/expander-... .

  3. Desative os PHYs, na forma de smp_phy_control --phy=NN --op=di /dev/bsg/expander-... . Expandido para o seu caso: smp_phy_control --phy=13 --op=di /dev/bsg/expander-0:0 smp_phy_control --phy=15 --op=di /dev/bsg/expander-0:0

Os números phy já estavam em sua saída: 13 , 15 , mas você pode querer confirmá-los usando smp_discover .

    
por 18.03.2017 / 21:37
1

Acho que o que você está tentando fazer é semelhante à configuração com discos Oracle ASM, onde o oracle acessa os blocos diretamente e os operadores do sistema são aconselhados a excluí-los usando o udev para que os discos não sejam formatados quando em uso Oracle.

Aqui está um link para a página relacionada no site da Oracle:

link

    
por 18.03.2017 / 08:25

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Uso de disco do Linux Como posso saber quais comandos usarão a expansão de chaves e quais não usarão?