Re: [Gluster-users] Volume not healing

2021-03-22 Thread Diego Zuccato
Il 19/03/21 18:06, Strahil Nikolov ha scritto:

> Are you running it against the fuse mountpoint ?
Yup.

> You are not supposed to see 'no such file or directory' ... Maybe
> something more serious is going on.
Between that and the duplicated files,that's for sure. But I don't know
where to look to at least diangose (if not fix) this :( As I said,
probably part of the issue is due to the multiple failures for OOM and
the multiple tries to remove a brick.

I'm currently emptying the volume then I'll recreate it from scratch,
hoping for the best.

-- 
Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
Servizi Informatici
Alma Mater Studiorum - Università di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786




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Re: [Gluster-users] Volume not healing

2021-03-22 Thread Diego Zuccato
Il 20/03/21 15:21, Zenon Panoussis ha scritto:

> When you have 0 files that need healing,
>   gluster volume heal BigVol granular-entry-heal enable
> I have tested with and without granular and, empirically,
> without any hard statistics, I find granular considerably
> faster.
Tks for the hint, but it's already set. I usually do it as soon as I
create the volume :) I don't understand why it's not the default :)

-- 
Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
Servizi Informatici
Alma Mater Studiorum - Università di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786




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Re: [Gluster-users] Volume not healing

2021-03-20 Thread Zenon Panoussis


> Is it possible to speed it up? Nodes are nearly idle...

When you have 0 files that need healing,

  gluster volume heal BigVol granular-entry-heal enable

I have tested with and without granular and, empirically,
without any hard statistics, I find granular considerably
faster.





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Re: [Gluster-users] Volume not healing

2021-03-19 Thread Diego Zuccato
Il 19/03/21 13:17, Strahil Nikolov ha scritto:

> find /FUSE/mountpoint -exec stat {} \;
Running it now (redirecting stdout to /dev/null).
It's finding quite a lot of "no such file or directory" errors.

-- 
Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
Servizi Informatici
Alma Mater Studiorum - Università di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786




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Re: [Gluster-users] Volume not healing

2021-03-19 Thread Diego Zuccato
Il 19/03/21 11:06, Diego Zuccato ha scritto:

> I tried to run "gluster v heal BigVol info summary" and got quite a high
> count of entries to be healed on some bricks:
> # gluster v heal BigVol info summary|grep pending|grep -v ' 0$'
> Number of entries in heal pending: 41
> Number of entries in heal pending: 2971
> Number of entries in heal pending: 20
> Number of entries in heal pending: 2393
> 
> Too bad that those numbers aren't decreasing with time.
Slight correction. Seems the numbers are *slowly* decreasing. After one
hour I see:
# gluster v heal BigVol info summary|grep pending|grep -v ' 0$'
Number of entries in heal pending: 41
Number of entries in heal pending: 2955
Number of entries in heal pending: 20
Number of entries in heal pending: 2384

Is it possible to speed it up? Nodes are nearly idle...

-- 
Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
Servizi Informatici
Alma Mater Studiorum - Università di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786




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[Gluster-users] Volume not healing

2021-03-19 Thread Diego Zuccato
Hello all.

I have a "problematic" volume. It was Rep3a1 with a dedicated VM for the
arbiters.

Too bad I understimated RAM needs and the arbiters VM crashed frequently
for OOM (had just 8GB allocated). Even the other two nodes sometimes
crashed, too, during a remove-brick operation (other thread).

So I've had to stop & re-run the remove-brick multiple times, even
rebooting the nodes, but it never completed.

Now, I decided to move all the files to a temporary storage to rebuild
the volume from scratch, but I find directories with duplicated files
(two identical files, same name, size and contents), probably the two
replicas.

I tried to run "gluster v heal BigVol info summary" and got quite a high
count of entries to be healed on some bricks:
# gluster v heal BigVol info summary|grep pending|grep -v ' 0$'
Number of entries in heal pending: 41
Number of entries in heal pending: 2971
Number of entries in heal pending: 20
Number of entries in heal pending: 2393

Too bad that those numbers aren't decreasing with time.

Seems no entries are considered in split-brain condition (all counts for
"gluster v heal BigVol info split-brain" are 0).

Is there something I can do to convince Gluster to heal those entries
w/o going entry-by-entry manually?

Thanks.

-- 
Diego Zuccato
DIFA - Dip. di Fisica e Astronomia
Servizi Informatici
Alma Mater Studiorum - Università di Bologna
V.le Berti-Pichat 6/2 - 40127 Bologna - Italy
tel.: +39 051 20 95786




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