[Bugs] [Bug 1179563] self-heal-algorithm with option "full" doesn't heal sparse files correctly

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1179563

Bhavana <bmohanra at redhat.com> changed:

           What    |Removed                     |Added
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                 CC|                            |bmohanra at redhat.com
              Flags|                            |needinfo?(ravishankar at redha
                   |                            |t.com)


--- Doc Text *updated* ---
Previously, the self-heal-algorithm with the option set to "full" did not heal sparse files correctly. This was because the AFR self-heal daemon just read from the source and wrote to the sink. If the source file happened to be sparse (VM workloads), we wrote zeros to the corresponding regions of the sink causing it to lose its sparseness. With this fix, if the source file is sparse, and the data read from source and sink are both zeros for that range, we skip writing that range to the sink, thereby retaining the sparseness of the file.


--- Comment #4 from Bhavana <bmohanra at redhat.com> ---
Hi Ravi,


The doc text is updated. Please review the same and sign off if it looks ok.

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