Actually there are two issues here - the first one (fixed by #28688) is
unloaded OSD compression settings when OSD compression mode = none and
pool one isn't none.
Submitted https://github.com/ceph/ceph/pull/28688 to fix this part.
The second - OSD doesn't see pool settings after restart until
On 6/20/2019 10:12 PM, Dan van der Ster wrote:
I will try to reproduce with logs and create a tracker once I find the
smoking gun...
It's very strange -- I had the osd mode set to 'passive', and pool
option set to 'force', and the osd was compressing objects for around
15 minutes. Then suddenl
http://tracker.ceph.com/issues/40480
On Thu, Jun 20, 2019 at 9:12 PM Dan van der Ster wrote:
>
> I will try to reproduce with logs and create a tracker once I find the
> smoking gun...
>
> It's very strange -- I had the osd mode set to 'passive', and pool
> option set to 'force', and the osd was
I will try to reproduce with logs and create a tracker once I find the
smoking gun...
It's very strange -- I had the osd mode set to 'passive', and pool
option set to 'force', and the osd was compressing objects for around
15 minutes. Then suddenly it just stopped compressing, until I did
'ceph da
Typo below, I meant "I doubled bluestore_compression_min_blob_size_hdd ..."
From: Frank Schilder
Sent: 20 June 2019 19:02
To: Dan van der Ster; ceph-users
Subject: Re: [ceph-users] understanding the bluestore blob, chunk and
compression para
On 6/20/2019 8:55 PM, Dan van der Ster wrote:
On Thu, Jun 20, 2019 at 6:55 PM Igor Fedotov wrote:
Hi Dan,
bluestore_compression_max_blob_size is applied for objects marked with
some additional hints only:
if ((alloc_hints & CEPH_OSD_ALLOC_HINT_FLAG_SEQUENTIAL_READ) &&
(alloc_hin
On Thu, Jun 20, 2019 at 6:55 PM Igor Fedotov wrote:
>
> Hi Dan,
>
> bluestore_compression_max_blob_size is applied for objects marked with
> some additional hints only:
>
>if ((alloc_hints & CEPH_OSD_ALLOC_HINT_FLAG_SEQUENTIAL_READ) &&
>(alloc_hints & CEPH_OSD_ALLOC_HINT_FLAG_RANDOM_RE
June 2019 17:23:51
To: ceph-users
Subject: Re: [ceph-users] understanding the bluestore blob, chunk and
compression params
P.S. I know this has been discussed before, but the
compression_(mode|algorithm) pool options [1] seem completely broken
-- With the pool mode set to force, we see that sometimes
I'd like to see more details (preferably backed with logs) on this...
On 6/20/2019 6:23 PM, Dan van der Ster wrote:
P.S. I know this has been discussed before, but the
compression_(mode|algorithm) pool options [1] seem completely broken
-- With the pool mode set to force, we see that sometimes t
Hi Dan,
bluestore_compression_max_blob_size is applied for objects marked with
some additional hints only:
if ((alloc_hints & CEPH_OSD_ALLOC_HINT_FLAG_SEQUENTIAL_READ) &&
(alloc_hints & CEPH_OSD_ALLOC_HINT_FLAG_RANDOM_READ) == 0 &&
(alloc_hints & (CEPH_OSD_ALLOC_HINT_FLAG_IMMUTAB
P.S. I know this has been discussed before, but the
compression_(mode|algorithm) pool options [1] seem completely broken
-- With the pool mode set to force, we see that sometimes the
compression is invoked and sometimes it isn't. AFAICT,
the only way to compress every object is to set
bluestore_com
Hi all,
I'm trying to compress an rbd pool via backfilling the existing data,
and the allocated space doesn't match what I expect.
Here is the test: I marked osd.130 out and waited for it to erase all its data.
Then I set (on the pool) compression_mode=force and compression_algorithm=zstd.
Then I
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