On Wed, Jul 24, 2019 at 1:58 PM Janek Bevendorff <
janek.bevendo...@uni-weimar.de> wrote:
> Ceph-fuse ?
>
> No, I am using the kernel module.
>
>
which version?
>
> Was there "Client xxx failing to respond to cache pressure" health warning?
>
>
> At first, yes (at least with the Mimic client). T
which version?
Nautilus, 14.2.2.
try mounting cephfs on a machine/vm with small memory (4G~8G), then
rsync your date into mount point of that machine.
I could try running it in a memory-limited Docker container, but isn't
there a better way to achieve the same thing? This sounds like a bug
Hi Team,
I guess for cluster installed with Nuatilus this warning will not come and
it is only for upgraded systems.
Please let us know disabling bluestore warn on legacy statfs is the only
option for upgraded clusters.
thanks,
Muthu
On Fri, Jul 19, 2019 at 5:22 PM Paul Emmerich
wrote:
> blues
On Wed, Jul 24, 2019 at 3:13 PM Janek Bevendorff <
janek.bevendo...@uni-weimar.de> wrote:
>
> which version?
>
> Nautilus, 14.2.2.
>
I mean kernel version
> try mounting cephfs on a machine/vm with small memory (4G~8G), then rsync
> your date into mount point of that machine.
>
> I could try ru
On 7/20/19 6:06 PM, Wei Zhao wrote:
> Hi ceph users:
> I was doing write benchmark, and found some io will be blocked for a
> very long time. The following log is one op , it seems to wait for
> replica to finish. My ceph version is 12.2.4, and the pool is 3+2 EC .
> Does anyone give me some ad
On 7/16/19 6:53 PM, M Ranga Swami Reddy wrote:
> Thanks for your reply..
> Here, new pool creations and pg auto scale may cause rebalance..which
> impact the ceph cluster performance..
>
> Please share name space detail like how to use etc
>
Would it be RBD, Rados, CephFS? What would you be us
On 7/18/19 12:21 PM, Eugen Block wrote:
> Hi list,
>
> we're facing an unexpected recovery behavior of an upgraded cluster
> (Luminous -> Nautilus).
>
> We added new servers with Nautilus to the existing Luminous cluster, so
> we could first replace the MONs step by step. Then we moved the old
I mean kernel version
Oh, of course. 4.15.0-54 on Ubuntu 18.04 LTS.
Right now I am also experiencing a different phenomenon. Since I wrapped
it up yesterday, the MDS machines have been trying to rejoin, but could
only handle a few hundred up to a few hundred thousand inodes per second
befo
Hi Wido,
thanks for your response.
Have you tried to dump the historic slow ops on the OSDs involved to see
what is going on?
$ ceph daemon osd.X dump_historic_slow_ops
Good question, I don't recall doing that. Maybe my colleague did but
he's on vacation right now. ;-)
But to be clear, a
Just so I understand, the duration for this operation is 329 seconds (a lot
!) but all the reported events happened ~ at the same time (2019-07-20
23:13:18)
Were all the events of this ops reported ?
Why do you see a problem with the "waiting for subops from 4" event ?
Thanks, Massimo
On Wed, Ju
Hello all,
I have a bit confusion about the num of bandwidth while ceph recovering.
Below is the result of ceph -w display while ceph recovering:
2019-07-22 18:30:20.378134 mon.0 [INF] pgmap v54047611: 704 pgs: 9
active+remapped+backfilling, 695 active+clean; 3847 GB data, 7742 GB used, 5049
Hello ceph-users,
I am currently building a Ceph cluster that will serve as a backend for
Openstack and object storage using RGW. The cluster itself is finished and
integrated with Openstack and virtual machines for testing are being deployed.
Now I'm a bit stumped on how to effectively backup the
Hi all,
we just upgraded our cluster to:
ceph version 14.2.0-300-gacd2f2b9e1
(acd2f2b9e196222b0350b3b59af9981f91706c7f) nautilus (stable)
When clicking through the dashboard to see what's new we noticed that
the crushmap viewer only shows the first root of our crushmap (we have
two roots
Hi Eugen,
Yes its solved, we reported in 14.2.1 and team fixed in 14.2.2
Regards,
Manuel
-Mensaje original-
De: ceph-users En nombre de Eugen Block
Enviado el: miércoles, 24 de julio de 2019 15:10
Para: ceph-users@lists.ceph.com
Asunto: [ceph-users] Nautilus dashboard: crushmap viewer s
On 7/24/19 1:37 PM, Fabian Niepelt wrote:
> Hello ceph-users,
>
> I am currently building a Ceph cluster that will serve as a backend for
> Openstack and object storage using RGW. The cluster itself is finished and
> integrated with Openstack and virtual machines for testing are being deployed.
Thank you very much!
Zitat von EDH - Manuel Rios Fernandez :
Hi Eugen,
Yes its solved, we reported in 14.2.1 and team fixed in 14.2.2
Regards,
Manuel
-Mensaje original-
De: ceph-users En nombre de Eugen Block
Enviado el: miércoles, 24 de julio de 2019 15:10
Para: ceph-users@lists.c
Does Ceph-fuse mount also has the same issue?
On Wed, Jul 24, 2019 at 3:35 AM Janek Bevendorff
wrote:
>
>
> I mean kernel version
>
> Oh, of course. 4.15.0-54 on Ubuntu 18.04 LTS.
>
> Right now I am also experiencing a different phenomenon. Since I wrapped it
> up yesterday, the MDS machines hav
>
> complete DR with Ceph to restore it back to how it was at a given
point in time is a challenge.
>
> Trying to backup a Ceph cluster sounds very 'enterprise' and is
difficult to scale as well.
Hmmm, I was actually also curious how backups were done, especially on
these clusters that have
Hi, thanks for the reply.
Am Mittwoch, den 24.07.2019, 15:26 +0200 schrieb Wido den Hollander:
>
> On 7/24/19 1:37 PM, Fabian Niepelt wrote:
> > Hello ceph-users,
> >
> > I am currently building a Ceph cluster that will serve as a backend for
> > Openstack and object storage using RGW. The clust
We're seeing ~5800 IOPS, ~23 MiB/s on 4 KiB IO (stripe_width 8192) on a
pool that could do 3 GiB/s with 4M blocksize. So, yeah, well, that is
rather harsh, even for EC.
4kb IO is slow in Ceph even without EC. Your 3 GB/s linear writes don't
matter anything. Ceph adds a significant overhead to e
Hallo,
what about RGW Replication:
https://ceph.com/geen-categorie/radosgw-simple-replication-example/
http://docs.ceph.com/docs/master/radosgw/multisite/
or rdb-mirroring:
http://docs.ceph.com/docs/master/rbd/rbd-mirroring/
Regards,
Tobias
Am 24.07.19 um 13:37 schrieb Fabian Niepelt:
Hello
Update: I had to wipe my CephFS, because after I increased the beacon
grace period on the last attempt, I couldn't get the MDSs to rejoin
anymore at all without running out of memory on the machine. I tried
wiping all sessions and the journal, but it didn't work. In the end all
I achieved was t
Note that enabling rbd mirroring means taking a hit on IOPS performance,
just think of it as a x2 overhead mainly on IOPS.
But it does work very well for disaster recovery scenarios if you can take
the performance hit.
Paul
--
Paul Emmerich
Looking for help with your Ceph cluster? Contact us a
So it looks like the problem only occurs with the kernel module, but
maybe ceph-fuse is just too slow to tell. In fact, it is a magnitude
slower. I only get 1.3k reqs/s compared to the 20k req/s with the
kernel module, which is not practical at all.
Update 2: it does indeed seem like ceph-f
On 7/24/19 4:06 PM, Fabian Niepelt wrote:
> Hi, thanks for the reply.
>
> Am Mittwoch, den 24.07.2019, 15:26 +0200 schrieb Wido den Hollander:
>>
>> On 7/24/19 1:37 PM, Fabian Niepelt wrote:
>>> Hello ceph-users,
>>>
>>> I am currently building a Ceph cluster that will serve as a backend for
>>
Hi,
Why not using backup tools that can do native OpenStack backups?
We are also using Ceph as the cinder backend on our OpenStack platform. We use
CommVault to make our backups.
- Sinan
> Op 24 jul. 2019 om 17:48 heeft Wido den Hollander het
> volgende geschreven:
>
>
>
>> On 7/24/19 4:0
On 07/23/2019 12:28 AM, Marc Schöchlin wrote:
>>> For testing purposes i set the timeout to unlimited ("nbd_set_ioctl
>>> /dev/nbd0 0", on already mounted device).
>>> >> I re-executed the problem procedure and discovered that the
>>> >> compression-procedure crashes not at the same file, but cra
Hi,
I’m running in production a 3 monitors, 10 osdnodes ceph cluster. This cluster
is used to host Openstack VM rbd. My pools are set to use a k=6 m=2 erasure
code profile with a 3 copy metadata pool in front. The cluster runs well, but
we recently had a short outage which triggered unexpected
Hi,
We had an strange issue while adding a new OSD to our Ceph Luminous 12.2.8
cluster. Our cluster has > 300 OSDs based on SSDs and NVMe.
After adding a new OSD to the Ceph cluster one of the already running OSDs
started to give us slow queries warnings.
We checked the OSD and it was working
Hi,
What would be the proper way to add 100 new OSDs to a cluster?
I have to add 100 new OSDs to our actual > 300 OSDs cluster, and I would like
to know how you do it.
Usually, we add them quite slowly. Our cluster is a pure SSD/NVMe one, and it
can handle plenty of load, but for the sake of s
Hi Jason,
i installed kernel 4.4.0-154.181 (from ubuntu package sources) and performed
the crash reproduction.
The problem also re-appeared with that kernel release.
A gunzip with 10 gunzip processes throwed 1600 write and 330 read IOPS against
the cluster/the rbd_ec volume with a transfer rate
I often add 50+ OSDs at a time and my cluster is all NLSAS. Here is what I do,
you can obviously change the weight increase steps to what you are comfortable
with. This has worked well for me and my workloads. I've sometimes seen peering
take longer if I do steps too quickly but I don't run any
On Wed, Jul 24, 2019 at 12:47 PM Marc Schöchlin wrote:
>
> Hi Jason,
>
> i installed kernel 4.4.0-154.181 (from ubuntu package sources) and performed
> the crash reproduction.
> The problem also re-appeared with that kernel release.
>
> A gunzip with 10 gunzip processes throwed 1600 write and 330
Hi Kevin,
Yeah, that makes a lot of sense, and looks even safer than adding OSDs one by
one. What do you change, the crush weight? Or the reweight? (I guess you change
the crush weight, I am right?)
Thanks!
El 24 jul 2019, a les 19:17, Kevin Hrpcek
mailto:kevin.hrp...@ssec.wisc.edu>> va esc
2/3 monitors is enough to maintain quorum, as is any majority.
However, EC pools have a default min_size of k+1 chunks.
This can be adjusted to k, but that has it's own dangers.
I assume you are using failure domain = "host"?
As you had k=6,m=2, and lost 2 failure domains, you had k chunks left,
CERN has a pretty nice reweight script that we run when we add OSDs in production.https://github.com/cernceph/ceph-scripts/blob/master/tools/ceph-gentle-reweightMight be of help!Kind regards, David Majchrzak Ursprungligt meddelande Ämne: Re: [ceph-users] How to add 100 new OSDs...F
I change the crush weights. My 4 second sleep doesn't let peering finish for
each one before continuing. I'd test with some small steps to get an idea of
how much remaps when increasing the weight by $x. I've found my cluster is
comfortable with +1 increases...also it take awhile to get to a wei
Hi,
I’m working through updating from 12.2.12/luminious to 14.2.2/nautilus on
centos 7.6. The managers are updated alright:
# ceph -s
cluster:
id: 2fdb5976-1234-4b29-ad9c-1ca74a9466ec
health: HEALTH_WARN
Degraded data redundancy: 24177/9555955 objects degraded (0.253%)
I usually add 20 OSDs each time.
To take control of the influence of backfilling, I will set
primary-affinity to 0 of those new OSDs and adjust backfilling
configurations.
http://docs.ceph.com/docs/master/rados/configuration/osd-config-ref/#backfilling
Kevin Hrpcek 于2019年7月25日周四 上午2:02写道：
> I c
Hi Peter,
Im not sure but maybe after some changes the OSDs are not being recongnized by
ceph scripts.
Ceph used to use udev to detect the OSDs and then moved to lvm, which kind of
OSDs are you running? Blustore or filestore? Which version did you use to
create them?
Cheers!
El 24 jul 2019,
Did you use ceph-disk before?
Support for ceph-disk was removed, see Nautilus upgrade instructions.
You'll need to run "ceph-volume simple scan" to convert them to ceph-volume
Paul
--
Paul Emmerich
Looking for help with your Ceph cluster? Contact us at https://croit.io
croit GmbH
Freseniusstr
Bluestore created with 12.2.10/luminous.
The OSD startup generates logs like:
2019-07-24 12:39:46.483 7f4b27649d80 0 set uid:gid to 167:167 (ceph:ceph)
2019-07-24 12:39:46.483 7f4b27649d80 0 ceph version 14.2.2
(4f8fa0a0024755aae7d95567c63f11d6862d55be) nautilus (stable), process ceph-osd,
pi
On Wed, Jul 24, 2019 at 8:36 PM Peter Eisch
wrote:
> # lsblk
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> sda 8:0 0 1.7T 0 disk
> ├─sda1 8:1 0 100M 0 part
> ├─sda2 8:2 0 1.7T 0 part
> └─sda5 8:5 0 10M 0 part
> sdb 8:16 0 1.7T 0 disk
> ├─sdb1 8:17 0 100M 0 part
> ├─sdb2 8:18 0 1.7T 0 part
> └─sdb5
On 7/24/19 7:15 PM, Kevin Hrpcek wrote:
> I often add 50+ OSDs at a time and my cluster is all NLSAS. Here is what
> I do, you can obviously change the weight increase steps to what you are
> comfortable with. This has worked well for me and my workloads. I've
> sometimes seen peering take longe
[2019-07-24 13:40:49,602][ceph_volume.process][INFO ] Running command:
/bin/systemctl show --no-pager --property=Id --state=running ceph-osd@*
This is the only log event. At the prompt:
# ceph-volume simple scan
#
peter
Peter Eisch
Senior Site Reliability Engineer
T1.612.659.3228
virginpuls
On 7/24/19 6:02 PM, Sinan Polat wrote:
> Hi,
>
> Why not using backup tools that can do native OpenStack backups?
>
> We are also using Ceph as the cinder backend on our OpenStack platform. We
> use CommVault to make our backups.
How much data is there in that Ceph cluster? And how does it p
Hi Paul,
To do better to answer you question, I'm following:
http://docs.ceph.com/docs/nautilus/releases/nautilus/
At step 6, upgrade OSDs, I jumped on an OSD host and did a full 'yum update'
for patching the host and rebooted to pick up the current centos kernel.
I didn't do anything to speci
Just chiming in to say that this too has been my preferred method for adding
[large numbers of] OSDs.
Set the norebalance nobackfill flags.
Create all the OSDs, and verify everything looks good.
Make sure my max_backfills, recovery_max_active are as expected.
Make sure everything has peered.
Unse
It is inherently dangerous to accept client IO - particularly writes -
when at k. Just like it's dangerous to accept IO with 1 replica in
replicated mode. It is not inherently dangerous to do recovery when at
k, but apparently it was originally written to use min_size rather
than k.
Looking at the
+1 on adding them all at the same time.
All these methods that gradually increase the weight aren't really
necessary in newer releases of Ceph.
Paul
--
Paul Emmerich
Looking for help with your Ceph cluster? Contact us at https://croit.io
croit GmbH
Freseniusstr. 31h
81247 München
www.croit.io
On Wed, Jul 24, 2019 at 2:56 PM Peter Eisch
wrote:
> Hi Paul,
>
> To do better to answer you question, I'm following:
> http://docs.ceph.com/docs/nautilus/releases/nautilus/
>
> At step 6, upgrade OSDs, I jumped on an OSD host and did a full 'yum
> update' for patching the host and rebooted to pi
Hi,
Is anybody using 4x (size=4, min_size=2) replication with Ceph?
The reason I'm asking is that a customer of mine asked me for a solution
to prevent a situation which occurred:
A cluster running with size=3 and replication over different racks was
being upgraded from 13.2.5 to 13.2.6.
During
We got a few size=4 pools, but most of them are metadata pools paired with
m=3 or m=4 erasure coded pools for the actual data.
Goal is to provide the same availability and durability guarantees for the
metadata as the data.
But we got some older odd setup with replicated size=4 for that reason
(se
I’d say the cure is worse than the issue you’re trying to fix, but that’s my
two cents.
Mark Schouten
> Op 24 jul. 2019 om 21:22 heeft Wido den Hollander het
> volgende geschreven:
>
> Hi,
>
> Is anybody using 4x (size=4, min_size=2) replication with Ceph?
>
> The reason I'm asking is that
All;
There's been a lot of discussion of various kernel versions on this list
lately, so I thought I'd seek some clarification.
I prefer to run CentOS, and I prefer to keep the number of "extra" repositories
to a minimum. Ceph requires adding a Ceph repo, and the EPEL repo. Updating
the kern
On 7/24/19 9:35 PM, Mark Schouten wrote:
> I’d say the cure is worse than the issue you’re trying to fix, but that’s my
> two cents.
>
I'm not completely happy with it either. Yes, the price goes up and
latency increases as well.
Right now I'm just trying to find a clever solution to this. It
I’m at step 6. I updated/rebooted the host to complete “installing the new
packages and restarting the ceph-osd daemon” on the first OSD host. All the
systemctl definitions to start the OSDs were deleted, all the properties in
/var/lib/ceph/osd/ceph-* directories were deleted. All the files
On Wed, Jul 24, 2019 at 3:49 PM Peter Eisch
wrote:
>
>
> I’m at step 6. I updated/rebooted the host to complete “installing the
> new packages and restarting the ceph-osd daemon” on the first OSD host.
> All the systemctl definitions to start the OSDs were deleted, all the
> properties in /var/l
On 7/24/19 9:38 PM, dhils...@performair.com wrote:
> All;
>
> There's been a lot of discussion of various kernel versions on this list
> lately, so I thought I'd seek some clarification.
>
> I prefer to run CentOS, and I prefer to keep the number of "extra"
> repositories to a minimum. Ceph
Hi,
I appreciate the insistency that the directions be followed. I wholly agree.
The only liberty I took was to do a ‘yum update’ instead of just ‘yum update
ceph-osd’ and then reboot. (Also my MDS runs on the MON hosts, so it got
update a step early.)
As for the logs:
[2019-07-24 15:07:22
On Wed, Jul 24, 2019 at 4:15 PM Peter Eisch
wrote:
> Hi,
>
>
>
> I appreciate the insistency that the directions be followed. I wholly
> agree. The only liberty I took was to do a ‘yum update’ instead of just
> ‘yum update ceph-osd’ and then reboot. (Also my MDS runs on the MON hosts,
> so it
On 23/7/19 9:59 pm, Stuart Longland wrote:
> I'll do some proper measurements once the migration is complete.
A starting point (I accept more rigorous disk storage tests exist):
> virtatomos ~ # hdparm -tT /dev/vdb
>
> /dev/vdb:
> Timing cached reads: 2556 MB in 1.99 seconds = 1281.50 MB/sec
+ other ceph-users
On Wed, Jul 24, 2019 at 10:26 AM Janek Bevendorff
wrote:
>
> > what's the ceph.com mailing list? I wondered whether this list is dead but
> > it's the list announced on the official ceph.com homepage, isn't it?
> There are two mailing lists announced on the website. If you go
I can't understand how using RAID0 is better than JBOD, considering jbod
would be many individual disks, each used as OSDs, instead of a single big
one used as a single OSD.
On Mon, Jul 22, 2019 at 4:05 AM Vitaliy Filippov wrote:
> OK, I meant "it may help performance" :) the main point is tha
One RAID0 array per drive :)
I can't understand how using RAID0 is better than JBOD, considering jbod
would be many individual disks, each used as OSDs, instead of a single
big one used as a single OSD.
--
With best regards,
Vitaliy Filippov
___
RAID0 mode being discussed here means several RAID0 "arrays", each with
a single physical disk as a member of it.
I.e. the number of OSDs is the same whether in RAID0 or JBOD mode.
E.g. 12x physicals disks = 12x RAID0 single disk "arrays" or 12x JBOD
physical disks = 12x OSDs.
Simon
On 24/07/
/dev/vdb:
Timing cached reads: 2556 MB in 1.99 seconds = 1281.50 MB/sec
Timing buffered disk reads: 62 MB in 3.03 seconds = 20.48 MB/sec
That is without any special tuning, just migrating back to FileStore…
journal is on the HDD (it wouldn't let me put it on the SSD like it did
last time
On 25/7/19 8:48 am, Vitaliy Filippov wrote:
> I get 60 mb/s inside a VM in my home nano-ceph consisting of 5 HDDs 4 of
> which are inside one PC and 5th is plugged into a ROCK64 :)) I use
> Bluestore...
60 millibits per second? 60 bits every 1000 seconds? Are you serious?
Or did we get the capi
60 millibits per second? 60 bits every 1000 seconds? Are you serious?
Or did we get the capitalisation wrong?
Assuming 60MB/sec (as 60 Mb/sec would still be slower than the 5MB/sec
I
was getting), maybe there's some characteristic that Bluestore is
particularly dependent on regarding the HDD
On 25/7/19 9:01 am, vita...@yourcmc.ru wrote:
60 millibits per second? 60 bits every 1000 seconds? Are you serious?
Or did we get the capitalisation wrong?
Assuming 60MB/sec (as 60 Mb/sec would still be slower than the 5MB/sec I
was getting), maybe there's some characteristic that Bluestore i
Hi,
We run few hundred HDD OSDs for our backup cluster, we set one RAID 0 per HDD
in order to be able to use -battery protected- write cache from the RAID
controller. It really improves performance, for both bluestore and filestore
OSDs.
We also avoid expanders as we had bad experiences with t
Cache=writeback is perfectly safe, it's flushed when the guest calls fsync, so
journaled filesystems and databases don't lose data that's committed to the
journal.
25 июля 2019 г. 2:28:26 GMT+03:00, Stuart Longland
пишет:
>On 25/7/19 9:01 am, vita...@yourcmc.ru wrote:
>>> 60 millibits per seco
I think it should to set "osd_pool_default_min_size=1" before you add osd ,
and the osd that you add at a time should in same Failure domain.
Hi,
What would be the proper way to add 100 new OSDs to a cluster?
I have to add 100 new OSDs to our actual > 300 OSDs cluster, and I would like
to kno
Hello,
I've inherited a Ceph cluster from someone who has left zero documentation or
any handover. A couple days ago it decided to show the entire company what it
is capable of..
The health report looks like this:
[root@host mnt]# ceph -s
cluster:
id: 809718aa-3eac-4664-b8fa-38c46cdb
On 7/25/19 6:49 AM, Sangwhan Moon wrote:
> Hello,
>
> I've inherited a Ceph cluster from someone who has left zero documentation or
> any handover. A couple days ago it decided to show the entire company what it
> is capable of..
>
> The health report looks like this:
>
> [root@host mnt]# c
+1 on that. We are going to add 384 OSDs next week to a 2K+ cluster. The proposed solution really works well!KasparOp 24 juli 2019 om 21:06 schreef Paul Emmerich : +1 on adding them all at the same time.All these methods that gradually increase the weight aren't really necessary in newer releases
Hello,
Original Message:
>
>
> On 7/25/19 6:49 AM, Sangwhan Moon wrote:
> > Hello,
> >
> > I've inherited a Ceph cluster from someone who has left zero documentation
> > or any handover. A couple days ago it decided to show the entire company
> > what it is capable of..
> >
> > The health re
On Thu, 25 Jul 2019 13:49:22 +0900 Sangwhan Moon wrote:
> osd: 39 osds: 39 up, 38 in
You might want to find that out OSD.
--
Christian BalzerNetwork/Systems Engineer
ch...@gol.com Rakuten Mobile Inc.
___
ceph-users ma
Original Message:
> On Thu, 25 Jul 2019 13:49:22 +0900 Sangwhan Moon wrote:
>
> > osd: 39 osds: 39 up, 38 in
>
> You might want to find that out OSD.
Thanks, I've identified the OSD and put it back in - doesn't seem to change
anything though. :(
Sangwhan
___
On 7/25/19 7:49 AM, Sangwhan Moon wrote:
> Hello,
>
> Original Message:
>>
>>
>> On 7/25/19 6:49 AM, Sangwhan Moon wrote:
>>> Hello,
>>>
>>> I've inherited a Ceph cluster from someone who has left zero documentation
>>> or any handover. A couple days ago it decided to show the entire company
Den ons 24 juli 2019 kl 21:48 skrev Wido den Hollander :
> Right now I'm just trying to find a clever solution to this. It's a 2k
> OSD cluster and the likelihood of an host or OSD crashing is reasonable
> while you are performing maintenance on a different host.
>
> All kinds of things have cross
Original Message:
>
>
> On 7/25/19 7:49 AM, Sangwhan Moon wrote:
> > Hello,
> >
> > Original Message:
> >>
> >>
> >> On 7/25/19 6:49 AM, Sangwhan Moon wrote:
> >>> Hello,
> >>>
> >>> I've inherited a Ceph cluster from someone who has left zero
> >>> documentation or any handover. A couple days
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