tree a4bcf8af795a71413eb09d56ab5ff0672b6e089c
parent e0688aad6d7ef3533fbf104eaa8d381ab91517ca
author Puthikorn Voravootivat <puthik@chromium.org> 1402436667 -0700
committer chrome-internal-fetch <chrome-internal-fetch@google.com> 1403148515 +0000

hardware_TrimIntegrity: Use hdparm determine trim feature

Use hdparm to determine that we should raise TestFail or
TestNAError when error occurs.

Also change chunk size from 64K to 192K as we see some
interesting behavior on some SSD.

Condition for test result:
- Trim command is not supported
  -> Target disk is a harddisk           : TestNA
  -> Target disk is SCSI disk w/o trim   : TestNA
  -> Otherwise                           : TestFail
- Can not verify integrity of untrimmed data
  -> All case                            : TestFail
- Trim data is not Zero
  -> SSD with RZAT                       : TestFail
  -> Otherwise                           : TestNA

BUG=chromium:351900
TEST=Run with test_that for each condition

Change-Id: If669809c9a4ccec0bceb8b2fd343cdcedff64197
Reviewed-on: https://chromium-review.googlesource.com/203307
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Commit-Queue: Puthikorn Voravootivat <puthik@chromium.org>
Tested-by: Puthikorn Voravootivat <puthik@chromium.org>