Re: Btrfs allow compression on NoDataCow files? (AFAIK Not, but it does)

2018-01-02 Thread Liu Bo
On Wed, Dec 20, 2017 at 11:59:20PM +0300, Timofey Titovets wrote: > How reproduce: > touch test_file > chattr +C test_file > dd if=/dev/zero of=test_file bs=1M count=1 > btrfs fi def -vrczlib test_file > filefrag -v test_file > > test_file > Filesystem type is: 9123683e > File size of test_file

Re: Btrfs allow compression on NoDataCow files? (AFAIK Not, but it does)

2017-12-22 Thread Kai Krakow
Am Thu, 21 Dec 2017 13:51:40 -0500 schrieb Chris Mason: > On 12/20/2017 03:59 PM, Timofey Titovets wrote: >> How reproduce: >> touch test_file >> chattr +C test_file >> dd if=/dev/zero of=test_file bs=1M count=1 >> btrfs fi def -vrczlib test_file >> filefrag -v test_file >> >> test_file >>

Re: Btrfs allow compression on NoDataCow files? (AFAIK Not, but it does)

2017-12-21 Thread Chris Mason
On 12/20/2017 03:59 PM, Timofey Titovets wrote: How reproduce: touch test_file chattr +C test_file dd if=/dev/zero of=test_file bs=1M count=1 btrfs fi def -vrczlib test_file filefrag -v test_file test_file Filesystem type is: 9123683e File size of test_file is 1048576 (256 blocks of 4096 bytes)

Btrfs allow compression on NoDataCow files? (AFAIK Not, but it does)

2017-12-20 Thread Timofey Titovets
How reproduce: touch test_file chattr +C test_file dd if=/dev/zero of=test_file bs=1M count=1 btrfs fi def -vrczlib test_file filefrag -v test_file test_file Filesystem type is: 9123683e File size of test_file is 1048576 (256 blocks of 4096 bytes) ext: logical_offset:physical_offset: