Неудача ZFS Raid-Z2, необходимо построить новый пул, но без порта SAS. Могу ли я отключить один диск от Raid-Z2?

У меня есть пул Raid-Z2 с дисками 6 * 4 ТБ. Все приводы наработаны чуть более 40 000 часов. Теперь они все кажутся унижающими достоинство одновременно. Пул деградировал, и все диски помечены как деградированные из-за большого количества ошибок. Но, к счастью, на данный момент нет потерянных данных.

        NAME        STATE     READ WRITE CKSUM
        File        DEGRADED     0     0     0
          raidz2-0  DEGRADED     0     0     0
            sda     DEGRADED     0     0     0  too many errors
            sdb     DEGRADED     0     0     0  too many errors
            sdc     DEGRADED     0     0     0  too many errors
            sdd     DEGRADED     0     0     0  too many errors
            sde     DEGRADED     0     0     0  too many errors
            sdf     DEGRADED     0     0     0  too many errors

Я хотел бы создать новый пул с дисками Raid-Z1 и 3 * 6 ТБ, поскольку мне не нужно все пространство, как в исходном пуле. Моя проблема в том, что в старом пуле 6 дисков, а в моем - 3, но у моего контроллера SAS только 8 портов. Итак, я хотел бы отключить один диск от моего пула Raid-Z2, подключить мои 3 новых диска и создать с ними новый пул, а затем сохранить мои данные, скопировав их в новый пул, до того, как старый пул выйдет из строя.

Возможно ли это ? Я считаю, что старый пул должен работать без одного диска. Но когда я попытался отключить диск, я не смог получить доступ к каким-либо данным в старом пуле.

Кто-нибудь знает, как решить эту проблему?

Zpool status -v:

  pool: File
 state: DEGRADED
status: One or more devices has experienced an unrecoverable error.  An
        attempt was made to correct the error.  Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
        using 'zpool clear' or replace the device with 'zpool replace'.
   see: http://zfsonlinux.org/msg/ZFS-8000-9P
  scan: resilvered 6.82G in 0 days 00:04:00 with 0 errors on Sun Aug 23 21:21:15 2020
config:

        NAME        STATE     READ WRITE CKSUM
        File        DEGRADED     0     0     0
          raidz2-0  DEGRADED     0     0     0
            sda     DEGRADED     0     0     0  too many errors
            sdb     DEGRADED     0     0     0  too many errors
            sdc     DEGRADED     0     0     0  too many errors
            sdd     DEGRADED     0     0     0  too many errors
            sde     DEGRADED     0     0     0  too many errors
            sdf     DEGRADED     0     0     0  too many errors

errors: No known data errors

Все диски сообщают о статусе SMART ok:

smartctl -H /dev/sda
smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.4.55-1-pve] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK

syslog кажется пустым:

root@boxvm:/var/log# cat syslog | grep sda
root@boxvm:/var/log#

Вывод dmesg также выглядит нормально:

dmesg | grep sda
[    8.997624] sd 1:0:0:0: [sda] Enabling DIF Type 2 protection
[    8.998488] sd 1:0:0:0: [sda] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
[    8.998847] sd 1:0:0:0: [sda] Write Protect is off
[    8.998848] sd 1:0:0:0: [sda] Mode Sense: df 00 10 08
[    8.999540] sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, supports DPO and FUA
[    9.093385]  sda: sda1 sda9
[    9.096819] sd 1:0:0:0: [sda] Attached SCSI disk


dmesg | grep sdb
[    8.997642] sd 1:0:1:0: [sdb] Enabling DIF Type 2 protection
[    8.998467] sd 1:0:1:0: [sdb] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
[    8.998828] sd 1:0:1:0: [sdb] Write Protect is off
[    8.998830] sd 1:0:1:0: [sdb] Mode Sense: df 00 10 08
[    8.999524] sd 1:0:1:0: [sdb] Write cache: disabled, read cache: enabled, supports DPO and FUA
[    9.087056]  sdb: sdb1 sdb9
[    9.090465] sd 1:0:1:0: [sdb] Attached SCSI disk


dmesg | grep sdc
[    8.997812] sd 1:0:2:0: [sdc] Enabling DIF Type 2 protection
[    8.998639] sd 1:0:2:0: [sdc] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
[    8.998998] sd 1:0:2:0: [sdc] Write Protect is off
[    8.998999] sd 1:0:2:0: [sdc] Mode Sense: df 00 10 08
[    8.999692] sd 1:0:2:0: [sdc] Write cache: disabled, read cache: enabled, supports DPO and FUA
[    9.084259]  sdc: sdc1 sdc9
[    9.088030] sd 1:0:2:0: [sdc] Attached SCSI disk


dmesg | grep sdd
[    8.997932] sd 1:0:3:0: [sdd] Enabling DIF Type 2 protection
[    8.998761] sd 1:0:3:0: [sdd] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
[    8.999120] sd 1:0:3:0: [sdd] Write Protect is off
[    8.999121] sd 1:0:3:0: [sdd] Mode Sense: df 00 10 08
[    8.999818] sd 1:0:3:0: [sdd] Write cache: disabled, read cache: enabled, supports DPO and FUA
[    9.103840]  sdd: sdd1 sdd9
[    9.107482] sd 1:0:3:0: [sdd] Attached SCSI disk


dmesg | grep sde
[    8.998017] sd 1:0:4:0: [sde] Enabling DIF Type 2 protection
[    8.998839] sd 1:0:4:0: [sde] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
[    8.999234] sd 1:0:4:0: [sde] Write Protect is off
[    8.999235] sd 1:0:4:0: [sde] Mode Sense: df 00 10 08
[    8.999933] sd 1:0:4:0: [sde] Write cache: disabled, read cache: enabled, supports DPO and FUA
[    9.088282]  sde: sde1 sde9
[    9.091665] sd 1:0:4:0: [sde] Attached SCSI disk


dmesg | grep sdf
[    8.998247] sd 1:0:5:0: [sdf] Enabling DIF Type 2 protection
[    8.999076] sd 1:0:5:0: [sdf] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
[    8.999435] sd 1:0:5:0: [sdf] Write Protect is off
[    8.999436] sd 1:0:5:0: [sdf] Mode Sense: df 00 10 08
[    9.000136] sd 1:0:5:0: [sdf] Write cache: disabled, read cache: enabled, supports DPO and FUA
[    9.090609]  sdf: sdf1 sdf9
[    9.094235] sd 1:0:5:0: [sdf] Attached SCSI disk

dmesg для контроллера SAS

root@boxvm:/var/log# dmesg | grep mpt2
[    1.151805] mpt2sas_cm0: 64 BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (65793672 kB)
[    1.200012] mpt2sas_cm0: CurrentHostPageSize is 0: Setting default host page size to 4k
[    1.200023] mpt2sas_cm0: MSI-X vectors supported: 1
[    1.200024] mpt2sas_cm0:  0 1
[    1.200098] mpt2sas_cm0: High IOPs queues : disabled
[    1.200099] mpt2sas0-msix0: PCI-MSI-X enabled: IRQ 51
[    1.200100] mpt2sas_cm0: iomem(0x00000000fc740000), mapped(0x00000000629d5dd1), size(65536)
[    1.200101] mpt2sas_cm0: ioport(0x000000000000d000), size(256)
[    1.254826] mpt2sas_cm0: CurrentHostPageSize is 0: Setting default host page size to 4k
[    1.281681] mpt2sas_cm0: scatter gather: sge_in_main_msg(1), sge_per_chain(9), sge_per_io(128), chains_per_io(15)
[    1.281746] mpt2sas_cm0: request pool(0x0000000074c49e3e) - dma(0xfcd700000): depth(3492), frame_size(128), pool_size(436 kB)
[    1.289333] mpt2sas_cm0: sense pool(0x00000000693be9f4)- dma(0xfcba00000): depth(3367),element_size(96), pool_size(315 kB)
[    1.289400] mpt2sas_cm0: config page(0x00000000f6926acf) - dma(0xfcb9ad000): size(512)
[    1.289401] mpt2sas_cm0: Allocated physical memory: size(1687 kB)
[    1.289401] mpt2sas_cm0: Current Controller Queue Depth(3364),Max Controller Queue Depth(3432)
[    1.289402] mpt2sas_cm0: Scatter Gather Elements per IO(128)
[    1.333780] mpt2sas_cm0: LSISAS2008: FWVersion(20.00.07.00), ChipRevision(0x03), BiosVersion(00.00.00.00)
[    1.333781] mpt2sas_cm0: Protocol=(Initiator,Target), Capabilities=(TLR,EEDP,Snapshot Buffer,Diag Trace Buffer,Task Set Full,NCQ)
[    1.334527] mpt2sas_cm0: sending port enable !!
[    2.861790] mpt2sas_cm0: host_add: handle(0x0001), sas_addr(0x590b11c0155b3300), phys(8)
[    8.996385] mpt2sas_cm0: port enable: SUCCESS