Scsi
如何讓 Linux 完全忽略 SCSI 驅動器？
與這個問題類似，我有興趣完全忽略驅動器，但在我的情況下，它是一個作為 SCSI 驅動器暴露給系統的驅動器。我在伺服器中的 21 個驅動器中有兩個驅動器失敗和失敗：
[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這是我們決定不升級/修復的舊伺服器。我現在正在考慮甚至不移除舊驅動器，只是將它們留在裡面，使陣列更小，然後禁用它們。陣列未滿，我們僅將其用作其他一些伺服器的額外備份位置。
所以，我很懶，不想去伺服器機房，有沒有辦法禁用這些驅動器並繼續前進？:-)
有關係統的更多資訊：
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
非常高的 SCSI 設備編號 (
scsi 0:0:90903:0) 表明在這種情況下存在硬體不斷下降和重新初始化驅動器的問題。MPT SAS 硬體在這裡完成了大部分的重新初始化，所以我們不能完全從核心控制它。另外，您提到有 21 個驅動器，因此它們可能位於一個或多個 SAS 擴展器之後。
那麼問題就變成了，是否有可能在軟體中禁用 SAS 擴展器上的埠？
如果擴展器確實支持它（我認為它在標準中是可選的），那麼是的！
有問題的包是
smp_utils.sg3_utils也會有所幫助）。你想要的是：
- 根據上面的手冊頁找出擴展器設備（可能
ls /dev/bsg/expand*）- 確認故障磁碟已從 dmesg: 連接到 phy
smp_discover /dev/bsg/expander-...。- 禁用 PHY，格式為
smp_phy_control --phy=NN --op=di /dev/bsg/expander-.... 針對您的情況進行了擴展：smp_phy_control --phy=13 --op=di /dev/bsg/expander-0:0 smp_phy_control --phy=15 --op=di /dev/bsg/expander-0:0phy 編號已經在您的輸出中：
13,15，但您可能想使用smp_discover.