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Cache raid0 to raid1 convertion.


tazire

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Basically as my title states i am looking to convert my cache storage from raid 0 to raid 1. essentially i have been seeing the odd error creep into one of my ssd's. I have plenty of available space to convert from raid 0 to raid 1. 102gb used out of 720gb (2x120gb & 2x240gb). I have found the commands and just wanted to double check i have it all correct before implementing it and also that all the data should be fine while making this conversion?  

 

-dconvert=raid0 -mconvert=raid1

 

My intention is to eventually buy replacement SSD's (2x500gb samsung 850EVO) to sort out the issues but i just want to stop the cache from being completely unusable before i replace them. 

Thanks in advance.

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ok I did it... although I have just gotten an error.

 

Cache pool BTRFS too many profiles

 

Everything seems to be working fine from what i can tell. although strangely the amount of space taken up by the cache is now half what it was while in raid0... any ideas?

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7 hours ago, tazire said:

ok I did it... although I have just gotten an error.

 

Cache pool BTRFS too many profiles

 

Everything seems to be working fine from what i can tell. although strangely the amount of space taken up by the cache is now half what it was while in raid0... any ideas?

 

This message can appear while conversion is in progress. It has temporarily two profiles: existing and new. Do

btrfs filesystem df /mnt/cache

To verify only one profile exists.

 

Ps. It is expected that RAID1 is half the size of RAID0

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