#10336: TRIM / fstrim can destroy data on SSD's when executed
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Reporter: kallisti5 | Owner: axeld
Type: bug | Status: in-progress
Priority: blocker | Milestone: R1/beta1
Component: Drivers/Disk | Version: R1/Development
Resolution: | Keywords: TRIM fstrim
Blocked By: | Blocking:
Has a Patch: 1 | Platform: All
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Comment (by pulkomandy):
According to Wikipedia:
There are different types of TRIM defined by SATA Words 69 and 169returned from an ATA IDENTIFY DEVICE command:
* Non-deterministic TRIM: Each read command to the Logical block address(LBA) after a TRIM may return different data.
* Deterministic TRIM (DRAT): All read commands to the LBA after a TRIMshall return the same data, or become determinate.
* Deterministic Read Zero after TRIM (RZAT): All read commands to theLBA after a TRIM shall return zero.