[Gluster-users] Reconstructing files from shards

[Jim Kinney]

Are there any plans to create an unsharding tool? 

On April 23, 2018 4:11:06 AM EDT, Gandalf Corvotempesta <gandalf.corvotempesta at gmail.com> wrote:
>2018-04-23 9:34 GMT+02:00 Alessandro Briosi <ab1 at metalit.com>:
>> Is it that really so?
>
>yes, i've opened a bug asking developers to block removal of sharding
>when volume has data on it or to write a huge warning message
>saying that data loss will happen
>
>> I thought that sharding was a extended attribute on the files created
>when
>> sharding is enabled.
>>
>> Turning off sharding on the volume would not turn off sharding on the
>files,
>> but on newly created files ...
>
>No, because sharded file are reconstructed on-the-fly based on the
>volume's sharding property.
>If you disable sharding, gluster knows nothing about the previous
>shard configuration, thus won't be able to read
>all shards for each file. It will only returns the first shard,
>resulting in data-loss or corruption.
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