Re: [Bug-tar] [PATCH] Remove nonportable check for files containing only zeroes

[Mark H Weaver]

Joerg Schilling <address@hidden> writes:

> Mark H Weaver <address@hidden> wrote:
>
>> Yes, on Btrfs I reliably see (st_blocks == 0) on a recently written,
>> mostly sparse file with size > 8G, using linux-libre-4.14.14.  More
>> specifically, the "storing sparse files > 8G" test in tar's test suite
>> reliably fails on my system:
>
> Now many bytes have been written past the hole?

Did you read my entire message?  The answer to your question was just a
few lines beyond the excerpt that you quoted above.  I wrote:

>> Yes, on Btrfs I reliably see (st_blocks == 0) on a recently written,
>> mostly sparse file with size > 8G, using linux-libre-4.14.14.  More
>> specifically, the "storing sparse files > 8G" test in tar's test suite
>> reliably fails on my system:
>> 
>>   140: storing sparse files > 8G                       FAILED 
>> (sparse03.at:29)
>> 
>> The test creates a sparse file consisting of 8 gibibytes of hole
>> followed by 512 bytes of 'A's at the end.  [...]

     Mark