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)
ext: logical_offset: physical_offset: length: expected: flags:
0: 0.. 31: 72917050.. 72917081: 32: encoded
1: 32.. 63: 72917118.. 72917149: 32: 72917082: encoded
2: 64.. 95: 72919494.. 72919525: 32: 72917150: encoded
3: 96.. 127: 72927576.. 72927607: 32: 72919526: encoded
4: 128.. 159: 72943261.. 72943292: 32: 72927608: encoded
5: 160.. 191: 72944929.. 72944960: 32: 72943293: encoded
6: 192.. 223: 72944952.. 72944983: 32: 72944961: encoded
7: 224.. 255: 72967084.. 72967115: 32: 72944984:
last,encoded,eof
test_file: 8 extents found
I can't found at now, where that error happen in code,
but it's reproducible on Linux 4.14.8
We'll silently cow in a few cases, this is one.
-chris
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