Hi Anthony

Appreciate you taking the time to provide so much guidance
All your messages in this mailing list are well documented and VERY helpful

I have attached a text file with the output of the commands you mentioned

You are right , there is no /dev/bluefs_/bluefsstore_bdev pointing to the
NVME namespaces
No specific reason to use separate WAL , just remembered it was recommended
back in the "mimic" days ( yes, I am a bit "rusty")

I am using 4+2 EC

I have 2 separate NVMEs ( 1.6 TB each) dedicated to DB/WAL for HDD
I want to use one for the 6 HDD that I currently have , and save the other
for when I will be adding more HDDs

The servers are SuperMicro SSG-641E with 2 x Intel GOLD 6530  (  32 cores
each) and 1TB RAM

My plan was/is to use the 3 x 15TB NVME on each server for high performance
pools (like metadata for cephfs or index for RGW)
I have carved them in 3 ( 5 TB each) so I can deploy more PGs hence
increase performance

The SSD are meant to be used for RBD ( proxmox )

The HDD are meant to be used for archiving data using  S3 and cephfs.

I can redeploy -  please clarify 2 things about osd spec file

  1. can I use NVME namespaces ( created with nvme command - see below) or
should I let ceph partition the NVME disk ?
       in either case, how do you specify  WHICH device/NVME to use for
DB/WAL ( as I have 2 identical ones and want to keep the second one for
adding more HDD in the future )

        nvme create-ns $device --nsze=$per_ns_blocks --ncap=$per_ns_blocks
--flbas=0 --dps=0
        nvme attach-ns $device --namespace-id=$i --controllers=`nvme
id-ctrl $device

 2. to deploy 3 different types of OSDs using the spec I have with the
advice from you , I am guessing this is the correct spec


service_type: osd
service_id: hdd_osd
crush_device_class: hdd_class
placement:
  host_pattern: *
spec:
   data_devices
     rotational: 1
  db_devices:
    rotational: 0
    size: 1000G:1600G
  filter_logic: AND
  objectstore: bluestore

service_id: ssd_osd
crush_device_class: ssd_class
placement:
  host_pattern: *
spec:
   data_devices
     rotational: 0
    size: 6000G:8000G

service_id: nvme_osd
crush_device_class: nvme_class
placement:
  host_pattern: *
spec:
   data_devices
     rotational: 0
    size: 4000G:5500G

Many thanks
Steven

On Sun, 29 Jun 2025 at 17:45, Anthony D'Atri <a...@dreamsnake.net> wrote:

> So you have NVMe SSD OSDs, SATA SSD OSDs, and HDD OSDs with offload onto
> NVNe SSDs.
>
> Did you have a specific reason to explicitly specify wal_devices_. It’s
> usually fine to just run with the default WAL size, with the WAL colocated
> with the DB.  And thus give your DB partitions a bit more space.
>
> What are your use-cases for these three classes of OSDs?  Looks like you
> have 42x 20T HDD OSDs, 63x NVMe OSDs,  and 84x 7.6T SATA SSD OSDs?
> Apparently with the 15T SSDs divided into 3x OSDs each?  How much CPU do
> you have on these nodes? Any specific reason to have chopped up the NVMe
> SSDs into thirds?
>
> It looks to me as though your .mgr pool is using the default
> replicated_rule, which does not specify a device class.  This will confound
> the balancer and if enabled the pg_autoscaler.
> I recommend changing the .mgr pool to use the CRUSH rule that the
> non-buckets.data pools use, which should be one that specifies
> 3-replication constrained to one of the SSD device classes.  As it is the
> .mgr pool may be placed on any of the three device classes, which is
> trivial with respect to space, but confounds as I mentioned.
>
> Or you could manually edit the CRUSH map and change the #0 replicated_rule
> to specify nvme_class but it sounds like you’re new to Ceph and I don’t
> want to frighten you with that process which unfortunately is still
> old-school.  Changing the rule as I suggested will be much safer.
>
> The numbers look like you have all of the RGW pools except buckets.data on
> the nvme_class SSDs, which is fine, but you won’t begin to use all their
> capacity, the index pool will maybe use 5-10% of the capacity used by your
> buckets.data pool over time, depending on your distribution of object sizes
> and the replication strategy of your buckets.data pool.  Doing the math
> I’ll speculate that your buckets.data pool is using a … EC 5+2 profile?
> True?  If so I might suggest rebuilding if/while you still can.  There are
> distinct advantages to having EC K+M < the number of OSD nodes.
>
>
>
>
> Hi,
>
> Yes, I have separate NVME namespaces allocated  for WAL and DB to each
> spinning disk
>
>
> Namespaces, or partitions?
>
>
> Does that mean I still have to hunt for the 8TB culprit ?
>
>
> Okay so `ceph cf` shows 8.2 TB of raw space used on the hdd_class OSDs,
> that’s your concern, right?
>
> Please share outputs of the following:
>
> `ceph osd df` (showing a few of each device class)
> `ceph osd dump | grep pool`
> `ceph osd metadata NNNN | egrep /dev\|bluefs_\|bluestore_bdev` for at
> least one OSD of each device class.  And run it yourself without specifying
> an OSD ID so it captures all, and see if all OSDs in each device class look
> the same.
> `ceph osd device ls-by-host ceph-host-1
>
> It’s entirely possible that your WAL+DB aren’t actually offloaded to SSDs
> as you intended.  Advanced OSD service specs can be tricky.
>
> That’s my suspicion, that the WAL+DB are actually still on your HDDs.
> Which can be migrated in-situ, or you can nuke the site from orbit and
> redeploy.
>
> A note about your OSD specs.  Specifying the models as you’re doing is
> totally supported.  But think about what happens if you add nodes in the
> future that have different drive SKUs, or you RMA a drive and they send you
> a different SKU as the replacement.
>
> It’s usually more future-proof to use a size range in the spec for each
> osd service instead of `model`, with a bit of margin to account for base 2
> units vs base 10 units.
>
> Here’s an example that creates OSDs on SSDs between 490 and 1200 GB, this
> is on systems that have ~ 1TB nominal drives.  The systems also have 2TB
> SATA SSDs that are used for WAL+DB offload, which are above the 1200GB
> limit specified so they aren’t matched.
>
> service_type: osd
> service_id: dashboard-admin-1705602677615
> service_name: osd.dashboard-admin-1705602677615
> placement:
>   host_pattern: *
> spec:
>   data_devices:
>     rotational: 0
>     size: 490G:1200G
>   filter_logic: AND
>   objectstore: bluestore
>
> And here is a spec that matches any HDD larger than 18T and deploys OSDs
> on them without offload.  This cluster has 20TB HDDs, so the range of 18+
> TB matches both the SEAGATE_ST20000NM007H and SEAGATE_ST20000NM002D drives
> present.
>
> service_type: osd
> service_id: cost_capacity
> service_name: osd.cost_capacity
> placement:
>   host_pattern: noactuallyusedanymore
> spec:
>   data_devices:
>     rotational: 1
>     size: '18T:'
>   filter_logic: AND
>   objectstore: bluestore
>
> Oh, and make sure that your HDDs and SSDs are all updated to the most
> recent firmware.  If you have Dell chassis, run DSU on the nodes and update
> all firmware, but skip the OS drivers.  If you have HP chassis, you can get
> firmware update scripts from their web site, but I suspect these aren’t
> HP.  If anyone else, they’re likely generic drives and you can get firmware
> updaters from the mfgs respective web sites.
>
> Then reboot nodes one at a time to effect the firmware, letting the
> cluster completely recover between each reboot.
>
>
>
>
> If yes , what would be the most efficient way of finding out what takes
> the space ?
>
> Apologies for sending pictures but we are operating in an air gapped
> environment
>
> I used this spec file to create the OSDs
>
> <image.png>
>
> Here is the osd tree of one of the servers
> all the other 6 are similar
>
> <image.png>
>
> Steven
>
>
> On Sun, 29 Jun 2025 at 14:25, Anthony D'Atri <a...@dreamsnake.net> wrote:
>
>> WAL by default rides along with the DB and rarely warrants a separate or
>> larger allocation.
>>
>> Since you say you’ve allocated DB space, does that mean that you have
>> WAL+DB offloaded onto SSDs?  If so they don’t contribute to the space used
>> on the hdd device class.
>>
>>
>> > On Jun 29, 2025, at 1:56 PM, Steven Vacaroaia <ste...@gmail.com> wrote:
>> >
>> > Hi Janne
>> >
>> > Thanks
>> > That make sense since I have allocated 196GB for DB and 5 GB for WALL
>> for
>> > all 42 spinning OSDs
>> > Again, thanks
>> > Steveb
>> >
>> > On Sun, 29 Jun 2025 at 12:02, Janne Johansson <icepic...@gmail.com>
>> wrote:
>> >
>> >> Den sön 29 juni 2025 kl 17:22 skrev Steven Vacaroaia <ste...@gmail.com
>> >:
>> >>
>> >>> Hi,
>> >>>
>> >>> I just built a new CEPH squid cluster with 7 nodes
>> >>> Since this is brand new, there is no actuall data on it except few
>> test
>> >>> files in the S3 data.bucket
>> >>>
>> >>> Why is "ceph -s" reporting 8 TB of used capacity ?
>> >>>
>> >>
>> >> Because each OSD will have GBs of preallocated data for the RocksDB,
>> >> write-ahead-logs and other structures, and this counts against "raw
>> >> available space", even if you don't have objects of this size put into
>> the
>> >> pools, the creation of the DBs and other things happened at osd
>> creation,
>> >> or when the first object was made, and are there even if you delete the
>> >> object later.
>> >>
>> >> --
>> >> May the most significant bit of your life be positive.
>> >>
>> > _______________________________________________
>> > ceph-users mailing list -- ceph-users@ceph.io
>> > To unsubscribe send an email to ceph-users-le...@ceph.io
>>
>>
>
ID   CLASS       WEIGHT    REWEIGHT  SIZE     RAW USE  DATA     OMAP     META   
  AVAIL    %USE  VAR   PGS  STATUS
153   hdd_class  18.38179   1.00000   18 TiB  266 GiB   70 GiB    1 KiB  1.3 
GiB   18 TiB  1.41  2.14  151      up
160   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.11  143      up
167   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.12  143      up
172   hdd_class  18.38179   1.00000   18 TiB  264 GiB   68 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.13  146      up
180   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.12  145      up
186   hdd_class  18.38179   1.00000   18 TiB  265 GiB   69 GiB    1 KiB  1.2 
GiB   18 TiB  1.41  2.14  150      up
  6  nvme_class   4.54749   1.00000  4.5 TiB  192 MiB   69 MiB    1 KiB  123 
MiB  4.5 TiB  0.00  0.01    5      up
 13  nvme_class   4.54749   1.00000  4.5 TiB  113 MiB   69 MiB    1 KiB   44 
MiB  4.5 TiB  0.00  0.00   10      up
 20  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    5      up
 26  nvme_class   4.54749   1.00000  4.5 TiB  192 MiB   69 MiB    1 KiB  123 
MiB  4.5 TiB  0.00  0.01    7      up
 32  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    8      up
 40  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    5      up
 48  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    6      up
 55  nvme_class   4.54749   1.00000  4.5 TiB  125 MiB   69 MiB    1 KiB   56 
MiB  4.5 TiB  0.00  0.00    5      up
 62  nvme_class   4.54749   1.00000  4.5 TiB  941 MiB   69 MiB    4 KiB  872 
MiB  4.5 TiB  0.02  0.03    8      up
 67   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 74   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 81   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 86   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 93   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
100   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
107   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
113   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
120   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
127   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
134   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
142   ssd_class   6.98630   1.00000  7.0 TiB   95 MiB   69 MiB    1 KiB   26 
MiB  7.0 TiB  0.00  0.00    0      up
147   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.12  145      up
158   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.12  145      up
166   hdd_class  18.38179   1.00000   18 TiB  265 GiB   69 GiB    1 KiB  1.2 
GiB   18 TiB  1.41  2.14  150      up
171   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.12  144      up
179   hdd_class  18.38179   1.00000   18 TiB  265 GiB   69 GiB    1 KiB  1.2 
GiB   18 TiB  1.41  2.14  150      up
187   hdd_class  18.38179   1.00000   18 TiB  264 GiB   68 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.13  147      up
  5  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    7      up
 10  nvme_class   4.54749   1.00000  4.5 TiB  258 MiB   69 MiB    1 KiB  189 
MiB  4.5 TiB  0.01  0.01    5      up
 15  nvme_class   4.54749   1.00000  4.5 TiB  196 MiB   69 MiB    1 KiB  127 
MiB  4.5 TiB  0.00  0.01    9      up
 22  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    5      up
 28  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00   11      up
 35  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    7      up
 42  nvme_class   4.54749   1.00000  4.5 TiB  188 MiB   69 MiB    1 KiB  118 
MiB  4.5 TiB  0.00  0.01    4      up
 50  nvme_class   4.54749   1.00000  4.5 TiB  941 MiB   69 MiB    4 KiB  872 
MiB  4.5 TiB  0.02  0.03    8      up
 57  nvme_class   4.54749   1.00000  4.5 TiB  188 MiB   69 MiB    1 KiB  118 
MiB  4.5 TiB  0.00  0.01    2      up
 66   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 71   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 80   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 85   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 92   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 98   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
105   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
112   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
119   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
126   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
133   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
140   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
149   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.12  144      up
156   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.12  144      up
162   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.11  143      up
168   hdd_class  18.38179   1.00000   18 TiB  265 GiB   69 GiB    1 KiB  1.2 
GiB   18 TiB  1.41  2.14  150      up
175   hdd_class  18.38179   1.00000   18 TiB  266 GiB   70 GiB    1 KiB  1.3 
GiB   18 TiB  1.41  2.14  150      up
182   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.12  143      up
  0  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    4      up
 11  nvme_class   4.54749   1.00000  4.5 TiB  125 MiB   69 MiB    1 KiB   56 
MiB  4.5 TiB  0.00  0.00    6      up
 16  nvme_class   4.54749   1.00000  4.5 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  4.5 TiB  0.00  0.00    8      up
 27  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    4      up
 33  nvme_class   4.54749   1.00000  4.5 TiB  395 MiB   69 MiB    1 KiB  326 
MiB  4.5 TiB  0.01  0.01    8      up
 38  nvme_class   4.54749   1.00000  4.5 TiB  654 MiB   69 MiB    1 KiB  585 
MiB  4.5 TiB  0.01  0.02    6      up
 46  nvme_class   4.54749   1.00000  4.5 TiB  297 MiB   69 MiB    1 KiB  228 
MiB  4.5 TiB  0.01  0.01    9      up
 52  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    7      up
 58  nvme_class   4.54749   1.00000  4.5 TiB  297 MiB   69 MiB    1 KiB  228 
MiB  4.5 TiB  0.01  0.01    5      up
 68   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 76   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 83   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 88   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 95   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
102   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
109   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
116   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
123   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
128   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
135   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
141   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
148   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.5 
GiB   18 TiB  1.39  2.11  143      up
155   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.3 
GiB   18 TiB  1.40  2.12  146      up
164   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.12  143      up
170   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.12  145      up
177   hdd_class  18.38179   1.00000   18 TiB  264 GiB   68 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.13  146      up
183   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.12  144      up
  1  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    6      up
  7  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    2      up
 17  nvme_class   4.54749   1.00000  4.5 TiB  720 MiB   69 MiB    1 KiB  651 
MiB  4.5 TiB  0.02  0.02   11      up
 23  nvme_class   4.54749   1.00000  4.5 TiB  487 MiB   69 MiB    1 KiB  418 
MiB  4.5 TiB  0.01  0.02    7      up
 34  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    7      up
 41  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    7      up
 47  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    3      up
 53  nvme_class   4.54749   1.00000  4.5 TiB  188 MiB   69 MiB    1 KiB  118 
MiB  4.5 TiB  0.00  0.01    7      up
 59  nvme_class   4.54749   1.00000  4.5 TiB  258 MiB   69 MiB    1 KiB  189 
MiB  4.5 TiB  0.01  0.01    5      up
 63   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 72   ssd_class   6.98630   1.00000  7.0 TiB  156 MiB   69 MiB    1 KiB   87 
MiB  7.0 TiB  0.00  0.00    0      up
 78   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 89   ssd_class   6.98630   1.00000  7.0 TiB  112 MiB   69 MiB    1 KiB   43 
MiB  7.0 TiB  0.00  0.00    0      up
 97   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
104   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
111   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
118   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
125   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
132   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
139   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
146   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
151   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.11  142      up
159   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.11  142      up
163   hdd_class  18.38179   1.00000   18 TiB  265 GiB   69 GiB    1 KiB  1.2 
GiB   18 TiB  1.41  2.14  150      up
173   hdd_class  18.38179   1.00000   18 TiB  265 GiB   69 GiB    1 KiB  1.3 
GiB   18 TiB  1.41  2.14  150      up
178   hdd_class  18.38179   1.00000   18 TiB  265 GiB   69 GiB    1 KiB  1.3 
GiB   18 TiB  1.41  2.14  150      up
185   hdd_class  18.38179   1.00000   18 TiB  264 GiB   68 GiB    1 KiB  1.3 
GiB   18 TiB  1.40  2.13  147      up
  4  nvme_class   4.54749   1.00000  4.5 TiB  611 MiB   69 MiB    1 KiB  542 
MiB  4.5 TiB  0.01  0.02    9      up
 12  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    5      up
 18  nvme_class   4.54749   1.00000  4.5 TiB  192 MiB   69 MiB    1 KiB  123 
MiB  4.5 TiB  0.00  0.01    9      up
 24  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    3      up
 29  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    5      up
 39  nvme_class   4.54749   1.00000  4.5 TiB  395 MiB   69 MiB    1 KiB  326 
MiB  4.5 TiB  0.01  0.01    5      up
 45  nvme_class   4.54749   1.00000  4.5 TiB  262 MiB   69 MiB    1 KiB  193 
MiB  4.5 TiB  0.01  0.01    6      up
 54  nvme_class   4.54749   1.00000  4.5 TiB   95 MiB   69 MiB    1 KiB   26 
MiB  4.5 TiB  0.00  0.00    8      up
 61  nvme_class   4.54749   1.00000  4.5 TiB  399 MiB   69 MiB    1 KiB  330 
MiB  4.5 TiB  0.01  0.01    9      up
 64   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 73   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 79   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 87   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 94   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
101   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
108   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
114   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
121   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
129   ssd_class   6.98630   1.00000  7.0 TiB  268 MiB  110 MiB    1 KiB  158 
MiB  7.0 TiB  0.00  0.01    1      up
136   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
143   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
150   hdd_class  18.38179   1.00000   18 TiB  264 GiB   68 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.13  146      up
154   hdd_class  18.38179   1.00000   18 TiB  266 GiB   70 GiB    1 KiB  1.3 
GiB   18 TiB  1.41  2.14  151      up
161   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.12  145      up
169   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.1 
GiB   18 TiB  1.40  2.13  146      up
176   hdd_class  18.38179   1.00000   18 TiB  266 GiB   70 GiB    1 KiB  1.2 
GiB   18 TiB  1.41  2.14  151      up
184   hdd_class  18.38179   1.00000   18 TiB  265 GiB   69 GiB    1 KiB  1.3 
GiB   18 TiB  1.41  2.14  150      up
  2  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    6      up
  8  nvme_class   4.54749   1.00000  4.5 TiB  188 MiB   69 MiB    1 KiB  118 
MiB  4.5 TiB  0.00  0.01    9      up
 19  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    4      up
 25  nvme_class   4.54749   1.00000  4.5 TiB  192 MiB   69 MiB    1 KiB  123 
MiB  4.5 TiB  0.00  0.01    5      up
 30  nvme_class   4.54749   1.00000  4.5 TiB  192 MiB   69 MiB    1 KiB  123 
MiB  4.5 TiB  0.00  0.01    8      up
 36  nvme_class   4.54749   1.00000  4.5 TiB  293 MiB   69 MiB    1 KiB  224 
MiB  4.5 TiB  0.01  0.01    7      up
 44  nvme_class   4.54749   1.00000  4.5 TiB  941 MiB   69 MiB    4 KiB  872 
MiB  4.5 TiB  0.02  0.03    6      up
 49  nvme_class   4.54749   1.00000  4.5 TiB  188 MiB   69 MiB    1 KiB  118 
MiB  4.5 TiB  0.00  0.01    6      up
 56  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    2      up
 65   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 70   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 77   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 84   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 91   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 99   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
106   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
115   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
122   ssd_class   6.98630   1.00000  7.0 TiB  116 MiB   69 MiB    1 KiB   47 
MiB  7.0 TiB  0.00  0.00    0      up
130   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
137   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
144   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
152   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.12  144      up
157   hdd_class  18.38179   1.00000   18 TiB  266 GiB   70 GiB    1 KiB  1.3 
GiB   18 TiB  1.41  2.14  151      up
165   hdd_class  18.38179   1.00000   18 TiB  266 GiB   70 GiB    1 KiB  1.3 
GiB   18 TiB  1.41  2.14  151      up
174   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.11  143      up
181   hdd_class  18.38179   1.00000   18 TiB  262 GiB   66 GiB    1 KiB  1.2 
GiB   18 TiB  1.39  2.11  143      up
188   hdd_class  18.38179   1.00000   18 TiB  263 GiB   67 GiB    1 KiB  1.2 
GiB   18 TiB  1.40  2.12  143      up
  3  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00   10      up
  9  nvme_class   4.54749   1.00000  4.5 TiB  188 MiB   69 MiB    1 KiB  118 
MiB  4.5 TiB  0.00  0.01    6      up
 14  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    2      up
 21  nvme_class   4.54749   1.00000  4.5 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  4.5 TiB  0.00  0.00    6      up
 31  nvme_class   4.54749   1.00000  4.5 TiB  209 MiB   69 MiB    1 KiB  140 
MiB  4.5 TiB  0.00  0.01    5      up
 37  nvme_class   4.54749   1.00000  4.5 TiB  188 MiB   69 MiB    1 KiB  118 
MiB  4.5 TiB  0.00  0.01   10      up
 43  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    5      up
 51  nvme_class   4.54749   1.00000  4.5 TiB  104 MiB   69 MiB    1 KiB   34 
MiB  4.5 TiB  0.00  0.00    3      up
 60  nvme_class   4.54749   1.00000  4.5 TiB  337 MiB   69 MiB    1 KiB  268 
MiB  4.5 TiB  0.01  0.01   11      up
 69   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 75   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 82   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 90   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
 96   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
103   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
110   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
117   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
124   ssd_class   6.98630   1.00000  7.0 TiB  268 MiB  110 MiB    1 KiB  158 
MiB  7.0 TiB  0.00  0.01    1      up
131   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
138   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
145   ssd_class   6.98630   1.00000  7.0 TiB  108 MiB   69 MiB    1 KiB   39 
MiB  7.0 TiB  0.00  0.00    0      up
                              TOTAL  1.6 PiB   11 TiB  2.8 TiB  303 KiB   65 
GiB  1.6 PiB  0.66                   

*************************
ceph osd dump | grep pool >> debug.txt

************************


MIN/MAX VAR: 0.00/2.14  STDDEV: 0.68
pool 1 '.mgr' replicated size 3 min_size 2 crush_rule 0 object_hash rjenkins 
pg_num 1 pgp_num 1 autoscale_mode on last_change 72 flags hashpspool 
stripe_width 0 pg_num_max 32 pg_num_min 1 application mgr read_balance_score 
150.00
pool 26 '.rgw.root' replicated size 3 min_size 2 crush_rule 6 object_hash 
rjenkins pg_num 1 pgp_num 1 autoscale_mode on last_change 757 flags hashpspool 
stripe_width 0 application rgw read_balance_score 60.00
pool 27 'default.rgw.log' replicated size 3 min_size 2 crush_rule 6 object_hash 
rjenkins pg_num 1 pgp_num 1 autoscale_mode on last_change 749 flags hashpspool 
stripe_width 0 application rgw read_balance_score 60.00
pool 28 'default.rgw.control' replicated size 3 min_size 2 crush_rule 6 
object_hash rjenkins pg_num 1 pgp_num 1 autoscale_mode on last_change 768 flags 
hashpspool stripe_width 0 application rgw read_balance_score 60.00
pool 29 'default.rgw.meta' replicated size 3 min_size 2 crush_rule 6 
object_hash rjenkins pg_num 1 pgp_num 1 autoscale_mode on last_change 755 flags 
hashpspool stripe_width 0 pg_autoscale_bias 4 application rgw 
read_balance_score 60.00
pool 30 'default.rgw.buckets.index' replicated size 3 min_size 2 crush_rule 6 
object_hash rjenkins pg_num 128 pgp_num 128 autoscale_mode on last_change 1153 
lfor 0/0/1146 flags hashpspool stripe_width 0 pg_autoscale_bias 4 application 
rgw read_balance_score 2.95
pool 31 'default.rgw.buckets.non-ec' replicated size 3 min_size 2 crush_rule 6 
object_hash rjenkins pg_num 1 pgp_num 1 autoscale_mode on last_change 759 flags 
hashpspool stripe_width 0 application rgw read_balance_score 60.00
pool 33 'default.rgw.buckets.data' erasure profile hdd-k4m2 size 6 min_size 5 
crush_rule 9 object_hash rjenkins pg_num 1024 pgp_num 1024 autoscale_mode warn 
last_change 1136 flags hashpspool,ec_overwrites max_bytes 329853488332800 
stripe_width 16384 application rgw

*******************
osd.188 is a rotational drive 
ceph osd metadata osd.188 >> debug.txt
******************


{
    "id": 188,
    "arch": "x86_64",
    "back_addr": "[v2:10.0.0.7:7010/1214744388,v1:10.0.0.7:7011/1214744388]",
    "back_iface": "",
    "bluefs": "1",
    "bluefs_db_access_mode": "blk",
    "bluefs_db_block_size": "4096",
    "bluefs_db_dev_node": "/dev/dm-38",
    "bluefs_db_devices": "nvme0n1",
    "bluefs_db_driver": "KernelDevice",
    "bluefs_db_optimal_io_size": "4096",
    "bluefs_db_partition_path": "/dev/dm-38",
    "bluefs_db_rotational": "0",
    "bluefs_db_size": "210449203200",
    "bluefs_db_support_discard": "1",
    "bluefs_db_type": "ssd",
    "bluefs_dedicated_db": "1",
    "bluefs_dedicated_wal": "1",
    "bluefs_single_shared_device": "0",
    "bluefs_wal_access_mode": "blk",
    "bluefs_wal_block_size": "4096",
    "bluefs_wal_dev_node": "/dev/dm-37",
    "bluefs_wal_devices": "nvme0n10",
    "bluefs_wal_driver": "KernelDevice",
    "bluefs_wal_optimal_io_size": "4096",
    "bluefs_wal_partition_path": "/dev/dm-37",
    "bluefs_wal_rotational": "0",
    "bluefs_wal_size": "5364514816",
    "bluefs_wal_support_discard": "1",
    "bluefs_wal_type": "ssd",
    "bluestore_allocation_from_file": "1",
    "bluestore_bdev_access_mode": "blk",
    "bluestore_bdev_block_size": "4096",
    "bluestore_bdev_dev_node": "/dev/dm-36",
    "bluestore_bdev_devices": "sdf",
    "bluestore_bdev_driver": "KernelDevice",
    "bluestore_bdev_optimal_io_size": "0",
    "bluestore_bdev_partition_path": "/dev/dm-36",
    "bluestore_bdev_rotational": "1",
    "bluestore_bdev_size": "20000584761344",
    "bluestore_bdev_support_discard": "0",
    "bluestore_bdev_type": "hdd",
    "bluestore_min_alloc_size": "4096",
    "ceph_release": "squid",
    "ceph_version": "ceph version 19.2.2 
(0eceb0defba60152a8182f7bd87d164b639885b8) squid (stable)",
    "ceph_version_short": "19.2.2",
    "ceph_version_when_created": "ceph version 19.2.2 
(0eceb0defba60152a8182f7bd87d164b639885b8) squid (stable)",
    "container_hostname": "ceph-host-7",
    "container_image": 
"quay.io/ceph/ceph@sha256:8214ebff6133ac27d20659038df6962dbf9d77da21c9438a296b2e2059a56af6",
    "cpu": "INTEL(R) XEON(R) GOLD 6530",
    "created_at": "2025-06-25T21:13:21.665651Z",
    "default_device_class": "hdd",
    "device_ids": 
"nvme0n1=MTFDKCC1T6TGQ-1BK1DABYY_3624105411B7,nvme0n10=MTFDKCC1T6TGQ-1BK1DABYY_3624105411B7,sdf=ATA_ST20000NM007D-3D_ZVTH5VM0",
    "device_paths": 
"nvme0n1=/dev/disk/by-path/pci-0000:49:00.0-nvme-1,nvme0n10=/dev/disk/by-path/pci-0000:49:00.0-nvme-10,sdf=/dev/disk/by-path/pci-0000:38:00.0-sas-exp0x500304802bcd323f-phy10-lun-0",
    "devices": "nvme0n1,nvme0n10,sdf",
    "distro": "centos",
    "distro_description": "CentOS Stream 9",
    "distro_version": "9",
    "front_addr": 
"[v2:192.168.122.236:7008/1214744388,v1:192.168.122.236:7009/1214744388]",
    "front_iface": "",
    "hb_back_addr": "[v2:10.0.0.7:7014/1214744388,v1:10.0.0.7:7015/1214744388]",
    "hb_front_addr": 
"[v2:192.168.122.236:7012/1214744388,v1:192.168.122.236:7013/1214744388]",
    "hostname": "ceph-host-7",
    "journal_rotational": "0",
    "kernel_description": "#65-Ubuntu SMP PREEMPT_DYNAMIC Mon May 19 17:15:03 
UTC 2025",
    "kernel_version": "6.8.0-62-generic",
    "mem_swap_kb": "8388604",
    "mem_total_kb": "1056481544",
    "network_numa_unknown_ifaces": "back_iface,front_iface",
    "objectstore_numa_nodes": "1",
    "objectstore_numa_unknown_devices": "sdf",
    "os": "Linux",
    "osd_data": "/var/lib/ceph/osd/ceph-188",
    "osd_objectstore": "bluestore",
    "osdspec_affinity": "hdd_osds",
    "rotational": "1"
}



**************
ceph device ls-by-host ceph-host-1 >> debug.txt
**************
DEVICE                                 DEV                                      
            DAEMONS                                          EXPECTED FAILURE
ATA_Micron_5400_MTFD_24534D3377EF      sdh                                      
            osd.74                                                           
ATA_Micron_5400_MTFD_24534D33781A      sdp                                      
            osd.127                                                          
ATA_Micron_5400_MTFD_24534D33783D      sdj                                      
            osd.86                                                           
ATA_Micron_5400_MTFD_24534D33783F      sdr                                      
            osd.142                                                          
ATA_Micron_5400_MTFD_24534D337850      sdi                                      
            osd.81                                                           
ATA_Micron_5400_MTFD_24534D33A815      sdk                                      
            osd.93                                                           
ATA_Micron_5400_MTFD_24534D33B3B8      sdq                                      
            osd.134                                                          
ATA_Micron_5400_MTFD_24534D33B3C7      sdm                                      
            osd.107                                                          
ATA_Micron_5400_MTFD_24534D33B3F5      sdg                                      
            osd.67                                                           
ATA_Micron_5400_MTFD_24534D33B413      sdo                                      
            osd.120                                                          
ATA_Micron_5400_MTFD_24534D33B44D      sdl                                      
            osd.100                                                          
ATA_Micron_5400_MTFD_24534D33BB42      sdn                                      
            osd.113                                                          
ATA_ST20000NM007D-3D_ZVTGW8GC          sdd                                      
            osd.172                                                          
ATA_ST20000NM007D-3D_ZVTH1FLZ          sde                                      
            osd.180                                                          
ATA_ST20000NM007D-3D_ZVTH2TKN          sda                                      
            osd.153                                                          
ATA_ST20000NM007D-3D_ZVTH37LY          sdc                                      
            osd.167                                                          
ATA_ST20000NM007D-3D_ZVTH4KWL          sdf                                      
            osd.186                                                          
ATA_ST20000NM007D-3D_ZVTH4YH6          sdb                                      
            osd.160                                                          
MTFDKCC15T3TGP-1BK1DABYY_2724104F6785  nvme0n1 nvme0n2 nvme0n3                  
            osd.13 osd.20 osd.6                                              
MTFDKCC15T3TGP-1BK1DABYY_3324104F16E2  nvme3n1 nvme3n2 nvme3n3                  
            osd.26 osd.32 osd.40                                             
MTFDKCC15T3TGP-1BK1DABYY_38241053E2E3  nvme4n1 nvme4n2 nvme4n3                  
            osd.48 osd.55 osd.62                                             
MTFDKCC1T6TGQ-1BK1DABYY_50241081D831   nvme1n1 nvme1n11 nvme1n12 nvme1n13 
nvme1n14 nvme1n6  osd.153 osd.160 osd.167 osd.172 osd.180 osd.186               
   
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