trafficserver-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Alan Carroll <solidwallofc...@verizonmedia.com>
Subject Re: How to config the raw disk?
Date Mon, 04 Mar 2019 20:00:43 GMT
Unfortunately that's not possible at this time. What has been done is to
have two layers of ATS with the ones in front having a smaller cache and
the backing layer caching on the second request for the object Or it could
be by time

On Mon, Mar 4, 2019 at 1:39 PM Jason Yang <peter.waynechina@gmail.com>
wrote:

> Hi Alan,
>     Thank you for your quick response! It is helpful! I did "udevadm
> trigger --subsystem-match=block” using root, which seems doesn’t work, so I
> did it again using user ubuntu, now it is working! Thank you!
>
> But I have another question, is there anyway to have ATS store content in
> the RAM for a while before writing to disk?
> Because my origin sends some content, then there is some chance this
> content may be changed within a few seconds (origin will push again), if I
> can store the content in the RAM for while, it can potentially save some
> disk reads/writes.
>
>
> Best,
> Jason
>
>
> On Mar 4, 2019, 11:53 -0500, Alan Carroll <
> solidwallofcode@verizonmedia.com>, wrote:
>
> 1) Did you do an `ls -l /dev/nvme*` to verify the permissions are what you
> think you set in the udev file?
> 2) Does group "ubuntu" have write permission?
> 3) Did you set the process group for `traffic_server` to be "ubuntu"? See
> https://docs.trafficserver.apache.org/en/8.0.x/admin-guide/files/records.config.en.html#proxy-config-admin-user-id
> - the primary group of the user ID will be used as the effective group ID
> of `traffic_server`.
>
> On Mon, Mar 4, 2019 at 9:59 AM Jason Yang <peter.waynechina@gmail.com>
> wrote:
>
>> Hi
>> I am trying to setup ATS 8.0.2 on AWS EC2 using m5d instance (with local
>> disk)
>>
>> I am running traffic server using user ubuntu and the instance has disk
>> like following
>> nvme0n1 259:0 0 279.4G 0 disk
>> nvme1n1 259:1 0 279.4G 0 disk
>> nvme2n1 259:2 0 8G 0 disk
>> └─nvme2n1p1 259:3 0 8G 0 part /
>>
>> I added the following lines to /etc/udev/rules.d/51-cache-disk.rules
>> SUBSYSTEM==block, KERNEL==nvme[0123456789], GROUP:=ubuntu
>> SUBSYSTEM==block, KERNEL==nvme[0123456789]n1, GROUP:=ubuntu
>>
>> and my storage.config
>> /dev/nvme0n1 label=cache.disk.0
>> /dev/nvme1n1 label=cache.disk.1
>>
>> But it seems it is not working and I am getting "WARNING: unable to open
>> '/dev/nvme0n1': Permission denied”.
>>
>>
>> Am I doing something wrong? Thank you!
>>
>>
>> Jason
>>
>>
>>
>>
>>

Mime
View raw message