On Dec 11, 2013, at 11:57 AM, Dave Jones <davej@xxxxxxxxxx> wrote:
> On Wed, Dec 11, 2013 at 11:52:51AM -0700, Chris Murphy wrote:
>> On Dec 11, 2013, at 10:27 AM, Dave Jones <davej@xxxxxxxxxx> wrote:
>>> Thoughts ? Could sda be dying ? (It is a fairly old crappy ssd)
>> It may reveal nothing useful, but please report the results from 'smartctl
>> -x /dev/sda' and if not found install smartmontools package.
> I meant it when I said 'old' and 'crappy'.
> It doesn't even support the interesting SMART commands.
Oh well, was worth a shot. The Available_Reservd_Space and
Media_Wearout_Indicator could be useful, but I don't know how trustworthy they
are when both say they're at 100 which is normally where these values start.
Yet they have high, and without reference, meaningless, raw values. The
Available_Reservd_Space value is currently 100 but its worst value was 48 which
is sorta interesting that it dipped down at one point. That seems to imply it
gave up some reserved sectors. I'd expect that once replaced that'd be it, and
this value should only go down.
I suspect we've only just begun to see the myriad ways in which SSDs could
fail. I ran across this article earlier today:
What I thought was eye opening was a hashed file failing multiple times in a
row with *different* hash values, being allowed to rest unpowered for five days
and then passing. Eeek. Talk about a great setup for a lot of weird transient
problems with that kind of reversal. What I can't tell is if there were read
errors report to the SATA driver, or if (different) bad data from a particular
page was sent to the driver.