Re: openzfs and block cloning question

2023-11-24 Thread Oleksandr Kryvulia

24.11.23 10:17, Alexander Leidinger:

Am 2023-11-24 08:10, schrieb Oleksandr Kryvulia:

Hi,
Recently cperciva@ published in his twitter [1] that enabling block 
cloning feature tends to data lost on 14.  Is this statement true for 
the current? Since I am using current for daily work and block 
cloning enabled by default how can I verify that my data is not 
affected?

Thank you.


Block cloning may have an issue, or it does things which amplifies an 
old existing issue, or there are two issues...

The full story is at
    https://github.com/openzfs/zfs/issues/15526

To be on the safe side, you may want to have 
vfs.zfs.dmu_offset_next_sync=0 (loader.conf / sysctl.conf) for the 
moment.


Thanks for clarification!



Re: openzfs and block cloning question

2023-11-24 Thread Alexander Leidinger

Am 2023-11-24 08:10, schrieb Oleksandr Kryvulia:

Hi,
Recently cperciva@ published in his twitter [1] that enabling block 
cloning feature tends to data lost on 14.  Is this statement true for 
the current? Since I am using current for daily work and block cloning 
enabled by default how can I verify that my data is not affected?

Thank you.


Block cloning may have an issue, or it does things which amplifies an 
old existing issue, or there are two issues...

The full story is at
https://github.com/openzfs/zfs/issues/15526

To be on the safe side, you may want to have 
vfs.zfs.dmu_offset_next_sync=0 (loader.conf / sysctl.conf) for the 
moment.


Bye,
Alexander.

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openzfs and block cloning question

2023-11-23 Thread Oleksandr Kryvulia

Hi,
Recently cperciva@ published in his twitter [1] that enabling block 
cloning feature tends to data lost on 14.  Is this statement true for 
the current? Since I am using current for daily work and block cloning 
enabled by default how can I verify that my data is not affected?

Thank you.