On Fri, Dec 05, 2014 at 10:58:09PM +, Elliott, Robert (Server Storage)
wrote:
I have a Crucial_CT256MX1 (i.e. MX100) and it does reliably zero.
make me concerned about this whitelist approach.
I think you need a manufacturer assertion that this is indeed
the design intent; you cannot
On Mon, 2014-12-08 at 10:15 -0500, Theodore Ts'o wrote:
On Fri, Dec 05, 2014 at 10:58:09PM +, Elliott, Robert (Server Storage)
wrote:
I have a Crucial_CT256MX1 (i.e. MX100) and it does reliably zero.
make me concerned about this whitelist approach.
I think you need a
On Mon, 8 Dec 2014 10:15:59 -0500
Theodore Ts'o ty...@mit.edu wrote:
On Fri, Dec 05, 2014 at 10:58:09PM +, Elliott, Robert (Server Storage)
wrote:
I have a Crucial_CT256MX1 (i.e. MX100) and it does reliably zero.
make me concerned about this whitelist approach.
I think you
On 07/11/2014 06:08, Martin K. Petersen wrote:
The whitelist is only meant as a starting point and is by no means
comprehensive:
- All intel SSD models except for 510
- Micron M5*
- Samsung SSDs
- Seagate SSDs
Signed-off-by: Martin K. Petersen martin.peter...@oracle.com
Cc: Martin K. Petersen
Subject: [PATCH 1/3] libata: Whitelist SSDs that are known to properly return
zeroes after TRIM
As defined, the DRAT (Deterministic Read After Trim) and RZAT (Return
Zero After Trim) flags in the ATA Command Set are unreliable in the
sense that they only define what
On Fri, Nov 07, 2014 at 12:08:12AM -0500, Martin K. Petersen wrote:
if (ata_id_has_trim(args-id)) {
- rbuf[14] |= 0x80; /* TPE */
+ rbuf[14] |= 0x80; /* LBPME */
- if (ata_id_has_zero_after_trim(args-id))
-
Christoph == Christoph Hellwig h...@infradead.org writes:
+ ata_dev_warn(dev, Enabling discard_zeroes_data\n);
Christoph I think this should _info, not _warn.
Fixed.
--
Martin K. Petersen Oracle Linux Engineering
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As defined, the DRAT (Deterministic Read After Trim) and RZAT (Return
Zero After Trim) flags in the ATA Command Set are unreliable in the
sense that they only define what happens if the device successfully
executed the DSM TRIM command. TRIM is only advisory, however, and the
device is free to
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