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From Andrija Panic <andrija.pa...@gmail.com>
Subject Re: Loop snapshots are not automatically deleted
Date Tue, 09 Apr 2019 16:44:38 GMT
Hi Li,

both manual and scheduled snapshots work fine on Ceph - CloudStack 4.11.2
and Ceph Mimic 13.2.5 - confirmed today.

i.e.
[root@ceph1 ~]# rbd snap ls cloudstack/99b3ee82-2b2e-4d7c-85b5-f580adc6f0fb
SNAPID NAME                                  SIZE TIMESTAMP
    18 fcd4b719-b0e4-4efc-8cd4-04184af19c39 5 GiB Tue Apr  9 11:20:45 2019
    19 fbc2280f-cdfd-4897-a134-dc3e0d6319a8 5 GiB Tue Apr  9 12:20:45 2019
    20 db742be5-abcb-4f0c-ac51-36150d90f2d5 5 GiB Tue Apr  9 13:20:45 2019

then after few hours
[root@ceph1 ~]# rbd snap ls cloudstack/99b3ee82-2b2e-4d7c-85b5-f580adc6f0fb
SNAPID NAME                                  SIZE TIMESTAMP
    24 76ac671b-948b-4338-be44-3fcf8538f882 5 GiB Tue Apr  9 15:20:45 2019
    26 deefaeb4-2cb2-4dae-a786-6d06e1f236e5 5 GiB Tue Apr  9 16:20:46 2019
    28 f2997ace-00ee-4d83-bce0-2faee9f41620 5 GiB Tue Apr  9 17:20:46 2019

^^^ configured to keep last 3 hourly snapshots.

You can get into issues deleting old snapshots in cases that some of the
previous schedule snapshot jobs didn't complete, or is in ERROR state and
similar and then the mess can happen (had this myself some years ago).

I would suggest you examine management server logs to understand what goes
wrong.

Best,
Andrija

On Tue, 9 Apr 2019 at 02:12, li jerry <div8cn@hotmail.com> wrote:

> Hi, Andrija
>         After the snapshot is manually created and deleted, the snapshot
> on ceph has been deleted normally.
>
>
> Jerry
>
> -----邮件原件-----
> 发件人: Andrija Panic <andrija.panic@gmail.com>
> 发送时间: 2019年4月8日 22:12
> 收件人: users <users@cloudstack.apache.org>
> 抄送: dev@cloudstack.apache.org
> 主题: Re: Loop snapshots are not automatically deleted
>
> Hi,
>
> can you please test with a new volume, make a few snapshots manually, and
> then delete one by one, observing if snapshots is deleted from Ceph ?
>
> Long days ago, this ^^^ was an issue, with serious consequences on
> performance - hope it's not back...
>
> Andrija
>
> On Mon, 8 Apr 2019 at 14:21, li jerry <div8cn@hotmail.com> wrote:
>
> > Hi,ALL
> >
> >      I created a loop snapshot on cloudstack 4.11.2 +CEPH
> > 10.2.11.Execute at 3 am every day, keep 3 copies.After a period of
> > observation, I found that the snapshot on cloudstack always shows 3
> > copies.However, ceph found that the snapshot on rbd is added every day
> and never deleted.
> >
> >
> >
>
> --
>
> Andrija Panić
>


-- 

Andrija Panić

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