Re: [ceph-users] RGW: ERROR: failed to distribute cache

[Wido den Hollander]

> Op 6 november 2017 om 20:17 schreef Yehuda Sadeh-Weinraub :
> 
> 
> On Mon, Nov 6, 2017 at 7:29 AM, Wido den Hollander  wrote:
> > Hi,
> >
> > On a Ceph Luminous (12.2.1) environment I'm seeing RGWs stall and about the 
> > same time I see these errors in the RGW logs:
> >
> > 2017-11-06 15:50:24.859919 7f8f5fa1a700  0 ERROR: failed to distribute 
> > cache for 
> > gn1-pf.rgw.data.root:.bucket.meta.X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.20
> > 2017-11-06 15:50:41.768881 7f8f7824b700  0 ERROR: failed to distribute 
> > cache for gn1-pf.rgw.data.root:X
> > 2017-11-06 15:55:15.781739 7f8f7824b700  0 ERROR: failed to distribute 
> > cache for 
> > gn1-pf.rgw.meta:.meta:bucket.instance:X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32:_XK5LExyX6EEIXxCD5Cws:1
> > 2017-11-06 15:55:25.784404 7f8f7824b700  0 ERROR: failed to distribute 
> > cache for 
> > gn1-pf.rgw.data.root:.bucket.meta.X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32
> >
> > I see one message from a year ago: 
> > http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-June/010531.html
> >
> > The setup has two RGWs running:
> >
> > - ceph-rgw1
> > - ceph-rgw2
> >
> > While trying to figure this out I see that a "radosgw-admin period pull" 
> > hangs for ever.
> >
> > I don't know if that is related, but it's something I've noticed.
> >
> > Mainly I see that at random times the RGW stalls for about 30 seconds and 
> > while that happens these messages show up in the RGW's log.
> >
> 
> do you happen to know if there's a dynamic resharding happening? The
> dynamic resharding should only affect the writes to the specific
> bucket, and should not affect cache distribution though. Originally I
> thought it could be HUP signal related issue, but that seem to be
> fixed in 12.2.1.
> 

No, it doesn't seem to be that way:

$ radosgw-admin reshard list

That's empty.

Looking at the logs I see this happening:


2017-11-07 09:45:12.147335 7f985b34f700 10 cache put: 
name=gn1-pf.rgw.data.root++.bucket.meta.XXX-mon-bucket:eb32b1ca-807a-4867-aea5-ff43ef7647c6.14977556.9
 info.flags=0x17
2017-11-07 09:45:12.147357 7f985b34f700 10 adding 
gn1-pf.rgw.data.root++.bucket.meta.XXX-mon-bucket:eb32b1ca-807a-4867-aea5-ff43ef7647c6.14977556.9
 to cache LRU end
2017-11-07 09:45:12.147364 7f985b34f700 10 updating xattr: name=user.rgw.acl 
bl.length()=155
2017-11-07 09:45:12.147376 7f985b34f700 10 distributing notification 
oid=notify.6 bl.length()=708
2017-11-07 09:45:22.148361 7f985b34f700  0 ERROR: failed to distribute cache 
for 
gn1-pf.rgw.data.root:.bucket.meta.XXX-mon-bucket:eb32b1ca-807a-4867-aea5-ff43ef7647c6.14977556.9

2017-11-07 09:45:22.150273 7f985b34f700 10 cache put: 
name=gn1-pf.rgw.meta++.meta:bucket:XXX-mon-bucket:_iaUdq4vufCpgnMlapZCm169:1 
info.flags=0x17
2017-11-07 09:45:22.150283 7f985b34f700 10 adding 
gn1-pf.rgw.meta++.meta:bucket:XXX-mon-bucket:_iaUdq4vufCpgnMlapZCm169:1 to 
cache LRU end
2017-11-07 09:45:22.150291 7f985b34f700 10 distributing notification 
oid=notify.1 bl.length()=407
2017-11-07 09:45:31.881703 7f985b34f700 10 cache put: 
name=gn1-pf.rgw.data.root++XXX-mon-bucket info.flags=0x17
2017-11-07 09:45:31.881720 7f985b34f700 10 moving 
gn1-pf.rgw.data.root++XXX-mon-bucket to cache LRU end
2017-11-07 09:45:31.881733 7f985b34f700 10 distributing notification 
oid=notify.1 bl.length()=372

As you can see, for OID 
'gn1-pf.rgw.data.root++.bucket.meta.XXX-mon-bucket:eb32b1ca-807a-4867-aea5-ff43ef7647c6.14977556.9'
 the cache notify failed, but for 'gn1-pf.rgw.data.root++XXX-mon-bucket' it 
went just fine.

Skimming through the logs I see that notifies fail when one of these objects is 
used:

- notify.4
- notify.6

In total there are 8 notify objects in the 'control' pool:

- notify.0
- notify.1
- notify.2
- notify.3
- notify.4
- notify.5
- notify.6
- notify.7

I don't know if that's something which might relate to it.

I created this issue in the tracker: http://tracker.ceph.com/issues/22060

Wido

> Yehuda
> 
> > Is anybody else running into this issue?
> >
> > Wido
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Re: [ceph-users] RGW: ERROR: failed to distribute cache

[Yehuda Sadeh-Weinraub]

On Mon, Nov 6, 2017 at 7:29 AM, Wido den Hollander  wrote:
> Hi,
>
> On a Ceph Luminous (12.2.1) environment I'm seeing RGWs stall and about the 
> same time I see these errors in the RGW logs:
>
> 2017-11-06 15:50:24.859919 7f8f5fa1a700  0 ERROR: failed to distribute cache 
> for 
> gn1-pf.rgw.data.root:.bucket.meta.X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.20
> 2017-11-06 15:50:41.768881 7f8f7824b700  0 ERROR: failed to distribute cache 
> for gn1-pf.rgw.data.root:X
> 2017-11-06 15:55:15.781739 7f8f7824b700  0 ERROR: failed to distribute cache 
> for 
> gn1-pf.rgw.meta:.meta:bucket.instance:X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32:_XK5LExyX6EEIXxCD5Cws:1
> 2017-11-06 15:55:25.784404 7f8f7824b700  0 ERROR: failed to distribute cache 
> for 
> gn1-pf.rgw.data.root:.bucket.meta.X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32
>
> I see one message from a year ago: 
> http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-June/010531.html
>
> The setup has two RGWs running:
>
> - ceph-rgw1
> - ceph-rgw2
>
> While trying to figure this out I see that a "radosgw-admin period pull" 
> hangs for ever.
>
> I don't know if that is related, but it's something I've noticed.
>
> Mainly I see that at random times the RGW stalls for about 30 seconds and 
> while that happens these messages show up in the RGW's log.
>

do you happen to know if there's a dynamic resharding happening? The
dynamic resharding should only affect the writes to the specific
bucket, and should not affect cache distribution though. Originally I
thought it could be HUP signal related issue, but that seem to be
fixed in 12.2.1.

Yehuda

> Is anybody else running into this issue?
>
> Wido
> ___
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> ceph-users@lists.ceph.com
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Re: [ceph-users] RGW: ERROR: failed to distribute cache

[Mark Schouten]

I see this once on both my RGW's today:
rgw01:

2017-11-06 10:36:35.070068 7f4a4f300700  0 ERROR: failed to distribute cache 
for default.rgw.meta:.meta:bucket.instance:XXX/YYY:ZZZ.30636654.1::0
2017-11-06 10:36:45.139068 7f4a4f300700  0 ERROR: failed to distribute cache 
for default.rgw.data.root:.bucket.meta.XXX:YYY:ZZZ.30636654.1



rgw02:
2017-11-06 10:38:29.606736 7f2463658700  0 ERROR: failed to distribute cache 
for default.rgw.meta:.meta:bucket.instance:XXX/YYY:ZZZ.30636741.1::0
2017-11-06 10:38:39.647266 7f2463658700  0 ERROR: failed to distribute cache 
for default.rgw.data.root:.bucket.meta.XXX:YYY:ZZZ.30636741.1


Not sure if it's a coincidence, but it is the bucket that should be dynamically 
reindexed for resharding, which is broken (Issue #22046)

Met vriendelijke groeten,

-- 
Kerio Operator in de Cloud? https://www.kerioindecloud.nl/
Mark Schouten  | Tuxis Internet Engineering
KvK: 61527076 | http://www.tuxis.nl/
T: 0318 200208 | i...@tuxis.nl



 Van:   Wido den Hollander <w...@42on.com> 
 Aan:   <ceph-users@lists.ceph.com> 
 Verzonden:   6-11-2017 16:29 
 Onderwerp:   [ceph-users] RGW:  ERROR: failed to distribute cache 

Hi, 
 
On a Ceph Luminous (12.2.1) environment I'm seeing RGWs stall and about the 
same time I see these errors in the RGW logs: 
 
2017-11-06 15:50:24.859919 7f8f5fa1a700  0 ERROR: failed to distribute cache 
for 
gn1-pf.rgw.data.root:.bucket.meta.X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.20
 
2017-11-06 15:50:41.768881 7f8f7824b700  0 ERROR: failed to distribute cache 
for gn1-pf.rgw.data.root:X 
2017-11-06 15:55:15.781739 7f8f7824b700  0 ERROR: failed to distribute cache 
for 
gn1-pf.rgw.meta:.meta:bucket.instance:X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32:_XK5LExyX6EEIXxCD5Cws:1
 
2017-11-06 15:55:25.784404 7f8f7824b700  0 ERROR: failed to distribute cache 
for 
gn1-pf.rgw.data.root:.bucket.meta.X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32
 
 
I see one message from a year ago: 
http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-June/010531.html 
 
The setup has two RGWs running: 
 
- ceph-rgw1 
- ceph-rgw2 
 
While trying to figure this out I see that a "radosgw-admin period pull" hangs 
for ever. 
 
I don't know if that is related, but it's something I've noticed. 
 
Mainly I see that at random times the RGW stalls for about 30 seconds and while 
that happens these messages show up in the RGW's log. 
 
Is anybody else running into this issue? 
 
Wido 
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[ceph-users] RGW: ERROR: failed to distribute cache

[Wido den Hollander]

Hi,

On a Ceph Luminous (12.2.1) environment I'm seeing RGWs stall and about the 
same time I see these errors in the RGW logs:

2017-11-06 15:50:24.859919 7f8f5fa1a700  0 ERROR: failed to distribute cache 
for 
gn1-pf.rgw.data.root:.bucket.meta.X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.20
2017-11-06 15:50:41.768881 7f8f7824b700  0 ERROR: failed to distribute cache 
for gn1-pf.rgw.data.root:X
2017-11-06 15:55:15.781739 7f8f7824b700  0 ERROR: failed to distribute cache 
for 
gn1-pf.rgw.meta:.meta:bucket.instance:X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32:_XK5LExyX6EEIXxCD5Cws:1
2017-11-06 15:55:25.784404 7f8f7824b700  0 ERROR: failed to distribute cache 
for 
gn1-pf.rgw.data.root:.bucket.meta.X:eb32b1ca-807a-4867-aea5-ff43ef7647c6.20755572.32

I see one message from a year ago: 
http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-June/010531.html

The setup has two RGWs running:

- ceph-rgw1
- ceph-rgw2

While trying to figure this out I see that a "radosgw-admin period pull" hangs 
for ever.

I don't know if that is related, but it's something I've noticed.

Mainly I see that at random times the RGW stalls for about 30 seconds and while 
that happens these messages show up in the RGW's log.

Is anybody else running into this issue?

Wido
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Re: [ceph-users] RGW: ERROR: failed to distribute cache

[Василий Ангапов]

BTW, I have 10 RGW load balanced through Apache.

When restarting one of them I get the following messages in log:
2016-06-14 14:44:15.919801 7fd4728dea40  2 all 8 watchers are set,
enabling cache
2016-06-14 14:44:15.919879 7fce370f7700  2 garbage collection: start
2016-06-14 14:44:15.919990 7fce368f6700  2 object expiration: start
2016-06-14 14:44:15.920534 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.15
2016-06-14 14:44:15.921257 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.16
2016-06-14 14:44:15.922145 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.17
2016-06-14 14:44:15.923772 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.18
2016-06-14 14:44:15.924557 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.19
2016-06-14 14:44:15.925400 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.20
2016-06-14 14:44:15.926349 7fd4728dea40  0 starting handler: fastcgi
2016-06-14 14:44:15.927125 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.21
2016-06-14 14:44:15.927897 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.22
2016-06-14 14:44:15.928412 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.23
2016-06-14 14:44:15.929042 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.24
2016-06-14 14:44:15.930752 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.25
2016-06-14 14:44:15.931313 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.26
2016-06-14 14:44:15.932482 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.27
2016-06-14 14:44:15.933237 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.28
2016-06-14 14:44:15.934097 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.29
2016-06-14 14:44:15.934660 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.30
2016-06-14 14:44:15.936322 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.31
2016-06-14 14:44:15.936979 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.0
2016-06-14 14:44:15.937559 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.1
2016-06-14 14:44:15.938222 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.2
2016-06-14 14:44:15.939000 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.3
2016-06-14 14:44:15.939622 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.4
2016-06-14 14:44:15.940135 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.5
2016-06-14 14:44:15.940669 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.6
2016-06-14 14:44:15.941227 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.7
2016-06-14 14:44:15.941854 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.8
2016-06-14 14:44:15.942333 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.9
2016-06-14 14:44:15.943036 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.10
2016-06-14 14:44:15.944708 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.11
2016-06-14 14:44:15.946347 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.12
2016-06-14 14:44:15.947001 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.13
2016-06-14 14:44:15.947610 7fce370f7700  0 RGWGC::process() failed to
acquire lock on gc.14
2016-06-14 14:44:15.947615 7fce370f7700  2 garbage collection: stop
2016-06-14 14:44:15.947949 7fd4728dea40 -1 rgw realm watcher: Failed
to watch realms.87abf44e-cab3-48c4-b012-0a9247519a5b.control with (2)
No such file or directory
2016-06-14 14:44:15.948370 7fd4728dea40 -1 rgw realm watcher: Failed
to establish a watch on RGWRealm, disabling dynamic reconfiguration.

2016-06-14 17:34 GMT+03:00 Василий Ангапов :
> I also get the following:
>
> $ radosgw-admin period update --commit
> 2016-06-14 14:32:28.982847 7fed392baa40  0 ERROR: failed to distribute
> cache for .rgw.root:periods.87abf44e-cab3-48c4-b012-0a9247519a5b:staging
> 2016-06-14 14:32:38.991846 7fed392baa40  0 ERROR: failed to distribute
> cache for 
> .rgw.root:periods.87abf44e-cab3-48c4-b012-0a9247519a5b:staging.latest_epoch
> 2016-06-14 14:32:49.002380 7fed392baa40  0 ERROR: failed to distribute
> cache for .rgw.root:periods.af0b6743-82ba-4517-bd51-36bdfbe48f9f.3
> 2016-06-14 14:32:59.013307 7fed392baa40  0 ERROR: failed to distribute
> cache for .rgw.root:periods.af0b6743-82ba-4517-bd51-36bdfbe48f9f.latest_epoch
> 2016-06-14 14:33:09.023554 7fed392baa40  0 ERROR: failed to distribute
> cache for .rgw.root:periods.af0b6743-82ba-4517-bd51-36bdfbe48f9f.latest_epoch
> 2016-06-14 14:33:19.034593 7fed392baa40  0 ERROR: failed to distribute
> cache for .rgw.root:zonegroup_info.bef0aa4e-6670-4c39-8520-ee51140424cc
> 2016-06-14 14:33:29.043825 7fed392baa40  0 ERROR: failed to distribute
> cache for .rgw.root:zonegroups_names.ed
> 2016-06-14 14:33:29.046386 7fed392baa40  0 Realm notify failed with -2
> {
> "id": "af0b6743-82ba-4517-bd51-36bdfbe48f9f",
>   

Re: [ceph-users] RGW: ERROR: failed to distribute cache

[Василий Ангапов]

I also get the following:

$ radosgw-admin period update --commit
2016-06-14 14:32:28.982847 7fed392baa40  0 ERROR: failed to distribute
cache for .rgw.root:periods.87abf44e-cab3-48c4-b012-0a9247519a5b:staging
2016-06-14 14:32:38.991846 7fed392baa40  0 ERROR: failed to distribute
cache for 
.rgw.root:periods.87abf44e-cab3-48c4-b012-0a9247519a5b:staging.latest_epoch
2016-06-14 14:32:49.002380 7fed392baa40  0 ERROR: failed to distribute
cache for .rgw.root:periods.af0b6743-82ba-4517-bd51-36bdfbe48f9f.3
2016-06-14 14:32:59.013307 7fed392baa40  0 ERROR: failed to distribute
cache for .rgw.root:periods.af0b6743-82ba-4517-bd51-36bdfbe48f9f.latest_epoch
2016-06-14 14:33:09.023554 7fed392baa40  0 ERROR: failed to distribute
cache for .rgw.root:periods.af0b6743-82ba-4517-bd51-36bdfbe48f9f.latest_epoch
2016-06-14 14:33:19.034593 7fed392baa40  0 ERROR: failed to distribute
cache for .rgw.root:zonegroup_info.bef0aa4e-6670-4c39-8520-ee51140424cc
2016-06-14 14:33:29.043825 7fed392baa40  0 ERROR: failed to distribute
cache for .rgw.root:zonegroups_names.ed
2016-06-14 14:33:29.046386 7fed392baa40  0 Realm notify failed with -2
{
"id": "af0b6743-82ba-4517-bd51-36bdfbe48f9f",
"epoch": 3,
"predecessor_uuid": "f2645d83-b1b4-4045-bf26-2b762c71937b",
"sync_status": [
"",
"",

2016-06-14 17:12 GMT+03:00 Василий Ангапов :
> Hello,
>
> I have Ceph 10.2.1 and when creating user in RGW I get the following error:
>
> $ radosgw-admin user create --uid=test --display-name="test"
> 2016-06-14 14:07:32.332288 7f00a4487a40  0 ERROR: failed to distribute
> cache for ed-1.rgw.meta:.meta:user:test:_dW3fzQ3UX222SWQvr3qeHYR:1
> 2016-06-14 14:07:42.338251 7f00a4487a40  0 ERROR: failed to distribute
> cache for ed-1.rgw.users.uid:test
> 2016-06-14 14:07:52.362768 7f00a4487a40  0 ERROR: failed to distribute
> cache for ed-1.rgw.users.keys:3J7DOREPC0ZLVFTMIW75
> {
> "user_id": "test",
> "display_name": "test",
> "email": "",
> "suspended": 0,
> "max_buckets": 1000,
> "auid": 0,
> "subusers": [],
> "keys": [
> {
> "user": "melesta",
> "access_key": "***",
> "secret_key": "***"
> }
> ],
> "swift_keys": [],
> "caps": [],
> "op_mask": "read, write, delete",
> "default_placement": "",
> "placement_tags": [],
> "bucket_quota": {
> "enabled": false,
> "max_size_kb": -1,
> "max_objects": -1
> },
> "user_quota": {
> "enabled": false,
> "max_size_kb": -1,
> "max_objects": -1
> },
> "temp_url_keys": []
> }
>
> What does it mean? Is something wrong?
>
> Thanks!
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[ceph-users] RGW: ERROR: failed to distribute cache

[Василий Ангапов]

Hello,

I have Ceph 10.2.1 and when creating user in RGW I get the following error:

$ radosgw-admin user create --uid=test --display-name="test"
2016-06-14 14:07:32.332288 7f00a4487a40  0 ERROR: failed to distribute
cache for ed-1.rgw.meta:.meta:user:test:_dW3fzQ3UX222SWQvr3qeHYR:1
2016-06-14 14:07:42.338251 7f00a4487a40  0 ERROR: failed to distribute
cache for ed-1.rgw.users.uid:test
2016-06-14 14:07:52.362768 7f00a4487a40  0 ERROR: failed to distribute
cache for ed-1.rgw.users.keys:3J7DOREPC0ZLVFTMIW75
{
"user_id": "test",
"display_name": "test",
"email": "",
"suspended": 0,
"max_buckets": 1000,
"auid": 0,
"subusers": [],
"keys": [
{
"user": "melesta",
"access_key": "***",
"secret_key": "***"
}
],
"swift_keys": [],
"caps": [],
"op_mask": "read, write, delete",
"default_placement": "",
"placement_tags": [],
"bucket_quota": {
"enabled": false,
"max_size_kb": -1,
"max_objects": -1
},
"user_quota": {
"enabled": false,
"max_size_kb": -1,
"max_objects": -1
},
"temp_url_keys": []
}

What does it mean? Is something wrong?

Thanks!
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