Thanks for that, ubuntu has it building for all arches, they have patches for 32bit and arm in the patches directory here:

http://archive.ubuntu.com/ubuntu/pool/main/c/ceph/ceph_15.2.5-0ubuntu1.1.debian.tar.xz


On 23 Nov 2020, at 08:48, Vladimir Bashkirtsev <vladimir@bashkirtsev.com> wrote:

I doubt that Cypress will build necessary stuff. Much faster:

diff -uNr ceph-15.2.4/src/pybind/mgr/dashboard/frontend/package.json ceph-15.2.4-arm32_fix/src/pybind/mgr/dashboard/frontend/package.json
--- ceph-15.2.4/src/pybind/mgr/dashboard/frontend/package.json    2020-07-01 01:10:51.000000000 +0930
+++ ceph-15.2.4-arm32_fix/src/pybind/mgr/dashboard/frontend/package.json    2020-11-21 22:11:16.065796889 +1030
@@ -122,7 +122,6 @@
     "@types/node": "12.12.34",
     "@types/simplebar": "5.1.1",
     "codelyzer": "5.2.2",
-    "cypress": "4.4.0",
     "html-linter": "1.1.1",
     "htmllint-cli": "0.0.7",
     "jest": "25.2.4",


On 23/11/20 7:37 pm, Duncan Bellamy wrote:
Thanks for the info, I have opened an issue about it on cypress github:
https://github.com/cypress-io/cypress/issues/9272

I don’t think the alpine build is running the test suite, cypress is installed and for the test step it does a cd into the build directory and runs “ctest” but looking at the build logs and searching for “ctest” returns 0 results.

Duncan

On 22 Nov 2020, at 23:18, Vladimir Bashkirtsev <vladimir@bashkirtsev.com> wrote:

There no cypress for ARM 32 bit at all. As it is used just for testing I have removed it from package.json and then dropped relevant test to avoid test failure. Not the best solution but because I do build 64 bits as well I can sleep relatively easy knowing that it should work. Node is used to create mgr frontend and it should generate pretty much the same JS regardless of architecture.

Explicit use of cypress also tells me that 32 bit support was dropped by Ceph silently. But I can say that after some patching ceph does pass full test suite on armv7l. I will provide them as PRs soon - hopefully they will be accepted and Ceph will run on 32 bits again.

On 23 November 2020 4:01:18 am AEDT, Duncan Bellamy <a.16bit.sysop@icloud.com> wrote:
I have been updating the Alpine Linux version to 15.2.6 and it fails on armv7 and x86 because cypress install fails with not found, how did you get cypress to work on arm 32bit?

Duncan

On 22 Nov 2020, at 08:49, Vladimir Bashkirtsev <vladimir@bashkirtsev.com> wrote:


Yeah, that's exactly because of this document I am kinda wondering. This document is latest dev and thus one may expect that 32 bits builds are still a thing. But after I have went through considerable effort building it on 32 bit ARM I am sure that current Ceph release is not buildable out of the box. Say in options.h Options::size_t (notion of SIZE option) uses std::size_t (largest counter available - 32 bits on 32 bit arches) as store of value. It automatically implies that smoke.sh test which tries to create 100G OSD fails as 100G value just does not fit into 32 bits and trimmed to become just 0 (zero). And the same story with other SIZE options which may exceed 2^32. So clearly Ceph in its current form cannot pass testing on 32 bit systems making me think that 32 bit target was silently dropped at some point.

On 22/11/20 7:39 pm, Yuval Lifshitz wrote:
I don't know if it is built and tested regularly on 32bit arch, but according to this:
https://docs.ceph.com/en/latest/dev/release-process/ 
32bit arch is a valid target for ceph.

On Sun, Nov 22, 2020 at 10:30 AM Vladimir Bashkirtsev <vladimir@bashkirtsev.com> wrote:
Hi Yuval,



Thank you for pointing me into right direction. I am planning to provide PRs as I already have relevant patches.



BTW: am I right in my thinking that Ceph no longer does building and testing on 32 bit architectures?



Regards,

Vladimir

On 22/11/20 7:18 pm, Yuval Lifshitz wrote:
Hi Vladimir,
We use PRs to github for code contributions to Ceph. For more details see here: [1].
If you find issues that need fixing, but you don't plan on fixing right away you can open tracker issues here [2].

Yuval

[1] https://github.com/ceph/ceph/blob/master/SubmittingPatches.rst
[2] https://tracker.ceph.com/projects

On Sun, Nov 22, 2020 at 5:45 AM Vladimir Bashkirtsev <vladimir@bashkirtsev.com> wrote:
Hi all,


Over last few weeks I was working on making Ceph 15.2.4 to build and run 
on ARM 32 bit system. It appears that Ceph no longer supports 32 bit 
systems. But I wanted to run it on Odroid HC-2 which makes a very good 
cheap OSD basically turning SATA disk into ethernet enabled disk. So I 
stuck my teeth into getting current Ceph up and running on 32 bit 
architecture. While doing so I have encountered number of bugs in Ceph 
codebase which I now want to put back for everyone to use.

For example I found a bug in EC code which attempts to malloc around 4GB 
- this bug is not noticeable on 64 bit systems as malloc happily 
allocates 4GB but it of course failed on 32 bit system and digging into 
the issue shown that this malloc was just a bug - it should not be 
happening at all in the first place.

Or wrong include (.cc instead of .h) which caused compilation hard 
error. Or python threading timeout was specified as int while it should 
be a float and basically timeout was not happening. And so on. Small 
inaccuracies peppered around code base. It is certainly should not be 
done as one huge patch and I am happy to put these patches one by one. 
But which way it should be done? As number of PR requests on github? Or 
patch files emailed to someone?

May someone from the list enlighten me on acceptable procedure I need to 
follow?


Regards,

Vladimir
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