> On Sep 14, 2017, at 5:00 AM, Zdenek Kabelac wrote:
>
> Dne 14.9.2017 v 00:39 Dale Stephenson napsal(a):
>> I could create the md to use 512k chunks for RAID 0, but I wouldn’t expect
>> that to have any impact on a single threaded test using 4k request size. Is
>> there
> On Sep 14, 2017, at 7:13 AM, Zdenek Kabelac wrote:
>
> Dne 14.9.2017 v 12:57 Gionatan Danti napsal(a):
>> On 14/09/2017 11:37, Zdenek Kabelac wrote:
>>> Sorry my typo here - is NOT ;)
>>>
>>>
>>> Zdenek
>> Hi Zdenek,
>> as the only variable is the LVM volume type
On 14/09/2017 11:37, Zdenek Kabelac wrote:
Sorry my typo here - is NOT ;)
Zdenek
Hi Zdenek,
as the only variable is the LVM volume type (fat/thick vs thin), why the
thin volume is slower than the thick one?
I mean: all other things being equal, what is holding back the thin volume?
Dne 14.9.2017 v 12:57 Gionatan Danti napsal(a):
On 14/09/2017 11:37, Zdenek Kabelac wrote:
Sorry my typo here - is NOT ;)
Zdenek
Hi Zdenek,
as the only variable is the LVM volume type (fat/thick vs thin), why the thin
volume is slower than the thick one?
I mean: all other things being
On 14/09/2017 11:37, Zdenek Kabelac wrote:
Sorry my typo here - is NOT ;)
Zdenek
Hi Zdenek,
as the only variable is the LVM volume type (fat/thick vs thin), why the
thin volume is slower than the thick one?
I mean: all other things being equal, what is holding back the thin volume?
Dne 14.9.2017 v 11:00 Zdenek Kabelac napsal(a):
Dne 14.9.2017 v 00:39 Dale Stephenson napsal(a):
On Sep 13, 2017, at 4:19 PM, Zdenek Kabelac wrote:
md127 is an 8-drive RAID 0
As you can see, there’s no lvm striping; I rely on the software RAID
underneath for that.
Dne 14.9.2017 v 00:39 Dale Stephenson napsal(a):
On Sep 13, 2017, at 4:19 PM, Zdenek Kabelac wrote:
Dne 13.9.2017 v 17:33 Dale Stephenson napsal(a):
Distribution: centos-release-7-3.1611.el7.centos.x86_64
Kernel: Linux 3.10.0-514.26.2.el7.x86_64
LVM: 2.02.166(2)-RHEL7
> On Sep 13, 2017, at 4:19 PM, Zdenek Kabelac wrote:
>
> Dne 13.9.2017 v 17:33 Dale Stephenson napsal(a):
>> Distribution: centos-release-7-3.1611.el7.centos.x86_64
>> Kernel: Linux 3.10.0-514.26.2.el7.x86_64
>> LVM: 2.02.166(2)-RHEL7 (2016-11-16)
>> Volume group consisted
Dne 13.9.2017 v 17:33 Dale Stephenson napsal(a):
Distribution: centos-release-7-3.1611.el7.centos.x86_64
Kernel: Linux 3.10.0-514.26.2.el7.x86_64
LVM: 2.02.166(2)-RHEL7 (2016-11-16)
Volume group consisted of an 8-drive SSD (500G drives) array, plus an
additional SSD of the same size. The
Distribution: centos-release-7-3.1611.el7.centos.x86_64
Kernel: Linux 3.10.0-514.26.2.el7.x86_64
LVM: 2.02.166(2)-RHEL7 (2016-11-16)
Volume group consisted of an 8-drive SSD (500G drives) array, plus an
additional SSD of the same size. The array had 64 k stripes.
Thin pool had -Zn option and
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