No, you misunderstand. This is related to the O_PONIES problem (http://lwn.net/A... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		cbsmith on April 10, 2015 \| parent \| context \| favorite \| on: XFS: There and back and there again? No, you misunderstand. This is related to the O_PONIES problem (http://lwn.net/Articles/351422/). The bug was software that failed to use datasync when it should have. The files weren't getting zeroed out on shutdown. The data had yet to be flushed to disk, and it wasn't required to be flushed to disk. The metadata was required to be flushed to disk. For security reasons, and unallocated inode data space has to be filled with 0's. So... data not flushed to disk? You get 0's when there is an unclean shutdown.

colanderman on April 10, 2015 [–]

Ah gotcha. So a different files-zeroed-on-close "bug" ;) At least that one makes sense.

cbsmith on April 11, 2015 | [–]

Also, the bug wasn't in the filesystem.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact