Re: ZFS: can't read MOS of zpool...

When did you update the bootblocks last time?

You can grab iso/usb image with current and check if loader there can see your pools - and if yes, update the boot blocks on disk…

rgds,
toomas

> On 9 Apr 2019, at 20:37, Alexandre C. Guimarães <rigoletto_at_FreeBSD.org> wrote:
> 
> Hello,
> 
> I can't say the precise point this started but I am convinced that was
> right after running `zpool upgrade` after upgrading to 12-RELEASE:
> 
> ---
> ZFS: i/o error - all block copies unavailable
> ZFS: can't read MOS of pool zdata
> ---
> 
> So, I got another disk to substitute that one, and now I have the same
> message two times. :-(
> 
> https://ibb.co/G0sfv3p
> 
> I suppose that would be very unfortunate to have the same problem in two
> completely unrelated disks at the same time; however, that error don't
> occurs with the SSD.
> 
> Both disks pools were created raw, however I've tried to do using GPT, MBR,
> and I got the same error messages.
> 
> ---
> ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
> ada0: <SanDisk SSD PLUS 120GB UE4500RL> ACS-2 ATA SATA 3.x device
> ada0: Serial Number 1838DB806764
> ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 512bytes)
> ada0: Command Queueing enabled
> ada0: 114480MB (234455040 512 byte sectors)
> ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
> ada1: <SAMSUNG HM320II 2AC101C4> ATA8-ACS SATA 2.x device
> ada1: Serial Number S22KJ56S906708
> ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
> ada1: Command Queueing enabled
> ada1: 305245MB (625142448 512 byte sectors)
> ada2 at ahcich2 bus 0 scbus2 target 0 lun 0
> ada2: <APPLE HDD HTS545050A7E362 GG2AB990> ATA8-ACS SATA 2.x device
> ada2: Serial Number TNS519GY1G75LG
> ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
> ada2: Command Queueing enabled
> ada2: 476940MB (976773168 512 byte sectors)
> ---
> 
> What more information would be useful? :-)
> 
> Thank you! :-)
> 
> -- 
> Best Regards,
> Alexandre C. Guimarães.
> https://bitbucket.org/rigoletto-freebsd/