Greetings,
* Pankaj Raghav (ker...@pankajraghav.com) wrote:
> On 23/03/2024 05:53, Thomas Munro wrote:
> > On Fri, Mar 22, 2024 at 10:56 PM Pankaj Raghav (Samsung)
> > wrote:
> >> My team and I have been working on adding Large block size(LBS)
> >> support to XFS in Linux[1]. Once this feature la
On Tue, Mar 26, 2024 at 3:34 AM Pankaj Raghav wrote:
> One question: Does ZFS do something like FUA request to force the device
> to clear the cache before it can update the node to point to the new page?
>
> If it doesn't do it, there is no guarantee from device to update the data
> atomically un
On Mon, Mar 25, 2024 at 02:53:56PM +0100, Pankaj Raghav wrote:
> This is an excellent question that needs a bit of community discussion to
> expose a device agnostic value that userspace can trust.
>
> There might be a talk this year at LSFMM about untorn writes[1] in buffered IO
> path. I will ma
On 23/03/2024 03:41, Bruce Momjian wrote:
> On Fri, Mar 22, 2024 at 10:31:11PM +0100, Tomas Vondra wrote:
>> Right, but things change over time - current storage devices support
>> much larger sectors (LBA format), usually 4K. And if you do I/O with
>> this size, it's usually atomic.
>>
>> AFAIK if
Hi Thomas,
On 23/03/2024 05:53, Thomas Munro wrote:
> On Fri, Mar 22, 2024 at 10:56 PM Pankaj Raghav (Samsung)
> wrote:
>> My team and I have been working on adding Large block size(LBS)
>> support to XFS in Linux[1]. Once this feature lands upstream, we will be
>> able to create XFS with FS bloc
Hi Tomas and Bruce,
>>> My knowledge of Postgres internals is limited, so I'm wondering if there
>>> are any optimizations or potential optimizations that Postgres could
>>> leverage once we have LBS support on Linux?
>>
>> We have discussed this in the past, and in fact in the early years we
>> t
On Fri, Mar 22, 2024 at 10:56 PM Pankaj Raghav (Samsung)
wrote:
> My team and I have been working on adding Large block size(LBS)
> support to XFS in Linux[1]. Once this feature lands upstream, we will be
> able to create XFS with FS block size > page size of the system on Linux.
> We also gave a
On Fri, Mar 22, 2024 at 10:31:11PM +0100, Tomas Vondra wrote:
> Right, but things change over time - current storage devices support
> much larger sectors (LBA format), usually 4K. And if you do I/O with
> this size, it's usually atomic.
>
> AFAIK if you built Postgres with 4K pages, on a device w
On 3/22/24 19:46, Bruce Momjian wrote:
> On Thu, Mar 21, 2024 at 06:46:19PM +0100, Pankaj Raghav (Samsung) wrote:
>> Hello,
>>
>> My team and I have been working on adding Large block size(LBS)
>> support to XFS in Linux[1]. Once this feature lands upstream, we will be
>> able to create XFS wit
On Thu, Mar 21, 2024 at 06:46:19PM +0100, Pankaj Raghav (Samsung) wrote:
> Hello,
>
> My team and I have been working on adding Large block size(LBS)
> support to XFS in Linux[1]. Once this feature lands upstream, we will be
> able to create XFS with FS block size > page size of the system on Lin
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