2024-07-05T04:05:04.553Z

<Md Mahamudur Rahaman Sajib> Hi Everyone, can anyone share a bit insight, for a PG when at the time of primary osd down/killed, how secondary osd take control over. Does any message are passed from OSDMonitor, if yes, what type(name of that message) of message it is? Can anyone point out the area of the code, I can check out?

2024-07-05T08:42:16.174Z

<Milind Changire> thread IDs in ceph-mgr.x.log don't match with those spewed out by gdb by the **t a a bt** command for a core dump
any hints on how to get them matched ?

2024-07-05T12:47:41.407Z

<Rost Khudov> Hello, can someone help with the issue
I am running `mstart.sh` command as follows:
`OSD=1 MON=1 RGW=1 MGR=0 MDS=0 mstart.sh cluster1 -d -n -X`
After that I am running [test-rgw-multisite.sh](https://github.com/ceph/ceph/blob/main/src/test/rgw/test-rgw-multisite.sh)
But I do have an error:
```/build/bin/ceph-mds: No such file or directory```
why is that? if I set MDS to 0?

2024-07-05T12:47:46.169Z

<Rost Khudov> Hello, can someone help with the issue
I am running `mstart.sh` command as follows:
`OSD=1 MON=1 RGW=1 MGR=0 MDS=0 mstart.sh cluster1 -d -n -X`
After that I am running [test-rgw-multisite.sh](https://github.com/ceph/ceph/blob/main/src/test/rgw/test-rgw-multisite.sh)
But I do have an error:
```/build/bin/ceph-mds: No such file or directory```
why is that? if I set MDS to 0

2024-07-05T12:49:43.023Z

<Casey Bodley> test-rgw-multisite.sh doesn't actually run any tests. it's just calling mstart.sh to set a up a multisite cluster

2024-07-05T12:50:25.041Z

<Casey Bodley> see <https://github.com/ceph/ceph/blob/main/src/test/rgw/test_multi.md> for instructions on running multisite functional tests

2024-07-05T12:51:07.512Z

<Casey Bodley> by default, that also uses mstart.sh to set up the cluster for you

2024-07-05T12:51:44.480Z

<Rost Khudov> oh, okay
that's explain an error
Thank you for pointing out to the documentation!

2024-07-05T13:24:34.913Z

<Rost Khudov> One more question
I don't see `test_multi.conf.SAMPLE` file, so it is not clear what should be configured in `test_multi.conf` file

For example, under `bucket_notification` I can see [bntests.conf.SAMPLE](https://github.com/ceph/ceph/blob/main/src/test/rgw/bucket_notification/bntests.conf.SAMPLE)

2024-07-05T13:28:11.809Z

<Casey Bodley> <https://github.com/ceph/ceph/blob/main/src/test/rgw/test_multi.py#L169-L182> shows the options/defaults that you can override