• Resetting drive assignments of encrypted drives renders them unmountable


    ezhik
    • Minor

    Hey Team,

     

    Recently had to go through an exercise of downsizing the cache array on an encrypted array (and encrypted cache array).

     

    Only way to do so was via:

     

    1. Tools -> New Config -> Preserve current assignments [Array slots].

    2. wipefs -a /dev/sd[y-z] # (clear filesystem from cache drives)

    3. assign cache drives

    4. Mark 'parity is already valid'

    5. Start array

    6. encounter unmountable drives 

    --

    The array was hosed at this point, can someone confirm this for me? have rebooted the server and re-created the array since data on it wasn't important, still pretty disappointing. The error was the partitions were not recognized.



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    That's not normal and should never happen, new config by itself doesn't touch the drives, encrypted or not, but without the diagnostics can't really say what it could be.

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    I could re-produce this at the cost of losing data on the array, I'll do  a re-pro and post diagnostics. 

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    I just did without any issues, on v6.9.2, but yeah, post the diags, might be something visible there.

     

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    12 minutes ago, JorgeB said:

    I just did without any issues, on v6.9.2, but yeah, post the diags, might be something visible there.

     

     

    Interesting, I just re-did as well and it worked as intended... I did notice that there was a difference on the space required for the filesystem and this went down from 72GB to 69GB on a 10TB drive, wonder if this was the issue...

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    22 minutes ago, ezhik said:

    wonder if this was the issue...

    Unlikely

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    3 hours ago, JorgeB said:

    Unlikely

    If the partition table was improperly setup to begin with, this could very well be an issue though - am I wrong? 

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    Also noticed that when you reset drive assignments, your settings get reset as well - I think that's wrong:

     

    The following settings get reset:

     

    Global disk settings
    [Disk Settings]
    - Enable auto start
    - Default file system
    - Shutdown time-out
    - Tunable (nr_requests)
    - Tunable (md_write_methods)

    [Global SMART Settings]
    - Default SMART notification value
     

     

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    14 minutes ago, ezhik said:

    The following settings get reset:

    Yeah, that's normal, but yeah, I would also prefer if they didn't reset.

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  • Status Definitions

     

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