[kwlug-disc] NVME failure?

[Ron Singh]

In servers(dual Xeon ASUS mobos) and i7 ASUS ATX Mobos, haven't had an
issue with vid cards, only once on an ASUS X99-A ATX MB having a fattie
heatsink on one of the bridge chips on the mobo.

Thanks,

Ron S.



On Sat, Jul 31, 2021 at 6:43 PM Charles M <chaslinux at gmail.com> wrote:

> Ron are those just used in servers? That heat sink looks really thick,
> wondering if it would be okay with a graphics card close to the slot?
>
> On Sat, Jul 31, 2021, 5:37 PM Ron Singh, <ronsingh149 at gmail.com> wrote:
>
>> We have been using the Sammy 970 Pro 1TB for caching in servers being
>> beaten about 18hr/6dy and have never had any failures.
>> I think we started on this model some 2yrs ago when they first came out,
>> prior to that we used the 960 Pro units.
>> All are NVMe.
>>
>> We *always* marry them to a decent heatsink. Heat kills, NVMe drives run
>> hot when being beaten, heatsinks plus a chassis fan providing decent
>> laminar airflow of the SSDs makes for greater reliability I think.
>>
>> Specs on SSD:
>>
>> https://www.samsung.com/ca/memory-storage/nvme-ssd/970-pro-nvme-m-2-ssd-1tb-mz-v7p1t0bw/
>> Not sure how the newer 980 Pro stack up as we are not transitioning away
>> from the 970 Pro unit mid-2022.
>>
>> Specs on Heatsink:
>> https://www.sabrent.com/product/SB-HTSK/m-2-2280-ssd-rocket-heatsink/
>>
>> This really does not address your Q, but I thought I would toss out an
>> anecdote out there.
>> BTW, the nitty-gritty on the Micron 9300 Max can be found here:
>>
>> https://media-www.micron.com/-/media/client/global/documents/products/product-flyer/9300_ssd_product_brief.pdf
>> Micron plays fast and loose about their TBW rating, sneaky buggers,
>> "3-drive writes per day".
>>
>> Thanks,
>>
>> Ron S.
>>
>>
>>
>> On Sat, Jul 31, 2021 at 4:27 PM Khalid Baheyeldin <kb at 2bits.com> wrote:
>>
>>> Short version: what is the longevity of NVME disks under heavy writes,
>>> e.g. for MySQL database?
>>>
>>> I am hoping that some hardware knowledgeable folk would clue me in on
>>> this hardware related issue.
>>>
>>> Basically, I had a client who got a new server over a year ago. The
>>> hosting company, a large US based host, recommended that we use an
>>> NVME disk for MySQL. This is a plain old physical server running
>>> Ubuntu Server 20.04 LTS (no VMs, no docker). It has 64GB RAM and 16
>>> cores. The root file system is two SSDs that are software RAIDed
>>> together. 1
>>>
>>> We had kernel patches accumulating over that year, and I wanted to do
>>> a reboot to make sure that everything started normally. Upon rebooting
>>>
>>> [  128.001364] nvme nvme0: Device not ready; aborting initialisation
>>> [  128.002041] nvme nvme0: Removing after probe failure status: -19
>>>
>>> That NVME was a 1.6TB Micron 9200 MAX, if that matters.
>>>
>>> There was no device file under /dev/ for that disk anymore.
>>>
>>> After the host replacing the NVME, everything was normal, as below:
>>> [    7.558183] nvme nvme0: Shutdown timeout set to 10 seconds
>>> [    7.562576] nvme nvme0: 32/0/0 default/read/poll queues
>>> [    7.565741]  nvme0n1: p1
>>> ...
>>> Jul 31 15:27:54 live multipath: nvme0n1: failed to get udev uid:
>>> Invalid argument
>>> Jul 31 15:27:54 live multipath: nvme0n1: uid =
>>> eui.000000000000000100a0750128df8715 (sysfs)
>>> ...
>>> [    6.008941] nvme nvme0: pci function 0000:b6:00.0
>>>
>>> [   11.571864] EXT4-fs (nvme0n1p1): mounted filesystem with ordered
>>> data mode. Opts: (null)
>>>
>>> Now to the questions:
>>>
>>> - Why would a device be functional before a reboot but totally go away
>>> after, and not being even detected by the operating system?
>>> - Are NVME as unreliable as SSDs or better? Or are they just faster?
>>>
>>> All thoughts appreciated ...
>>> --
>>> Khalid M. Baheyeldin
>>> 2bits.com, Inc.
>>> Fast Reliable Drupal
>>> Drupal performance optimization, hosting and consulting.
>>> "Sooner or later, this combustible mixture of ignorance and power is
>>> going to blow up in our faces." -- Dr. Carl Sagan
>>>
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>>>
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