[ovirt-users] Replicated Glusterfs on top of ZFS
Arman Khalatyan
arm2arm at gmail.com
Fri Mar 3 14:30:17 UTC 2017
No, I have one pool made of the one disk and ssd as a cache and log device.
I have 3 Glusterfs bricks- separate 3 hosts:Volume type Replicate
(Arbiter)= replica 2+1!
That how much you can push into compute nodes(they have only 3 disk slots).
On Fri, Mar 3, 2017 at 3:19 PM, Juan Pablo <pablo.localhost at gmail.com>
wrote:
> ok, you have 3 pools, zclei22, logs and cache, thats wrong. you should
> have 1 pool, with zlog+cache if you are looking for performance.
> also, dont mix drives.
> whats the performance issue you are facing?
>
>
> regards,
>
> 2017-03-03 11:00 GMT-03:00 Arman Khalatyan <arm2arm at gmail.com>:
>
>> This is CentOS 7.3 ZoL version 0.6.5.9-1
>>
>> [root at clei22 ~]# lsscsi
>>
>> [2:0:0:0] disk ATA INTEL SSDSC2CW24 400i /dev/sda
>>
>> [3:0:0:0] disk ATA HGST HUS724040AL AA70 /dev/sdb
>>
>> [4:0:0:0] disk ATA WDC WD2002FYPS-0 1G01 /dev/sdc
>>
>>
>> [root at clei22 ~]# pvs ;vgs;lvs
>>
>> PV VG Fmt
>> Attr PSize PFree
>>
>> /dev/mapper/INTEL_SSDSC2CW240A3_CVCV306302RP240CGN vg_cache lvm2
>> a-- 223.57g 0
>>
>> /dev/sdc2 centos_clei22 lvm2
>> a-- 1.82t 64.00m
>>
>> VG #PV #LV #SN Attr VSize VFree
>>
>> centos_clei22 1 3 0 wz--n- 1.82t 64.00m
>>
>> vg_cache 1 2 0 wz--n- 223.57g 0
>>
>> LV VG Attr LSize Pool Origin Data% Meta%
>> Move Log Cpy%Sync Convert
>>
>> home centos_clei22 -wi-ao---- 1.74t
>>
>>
>> root centos_clei22 -wi-ao---- 50.00g
>>
>>
>> swap centos_clei22 -wi-ao---- 31.44g
>>
>>
>> lv_cache vg_cache -wi-ao---- 213.57g
>>
>>
>> lv_slog vg_cache -wi-ao---- 10.00g
>>
>>
>> [root at clei22 ~]# zpool status -v
>>
>> pool: zclei22
>>
>> state: ONLINE
>>
>> scan: scrub repaired 0 in 0h0m with 0 errors on Tue Feb 28 14:16:07 2017
>>
>> config:
>>
>>
>> NAME STATE READ WRITE CKSUM
>>
>> zclei22 ONLINE 0 0 0
>>
>> HGST_HUS724040ALA640_PN2334PBJ4SV6T1 ONLINE 0 0 0
>>
>> logs
>>
>> lv_slog ONLINE 0 0 0
>>
>> cache
>>
>> lv_cache ONLINE 0 0 0
>>
>>
>> errors: No known data errors
>>
>>
>> *ZFS config:*
>>
>> [root at clei22 ~]# zfs get all zclei22/01
>>
>> NAME PROPERTY VALUE SOURCE
>>
>> zclei22/01 type filesystem -
>>
>> zclei22/01 creation Tue Feb 28 14:06 2017 -
>>
>> zclei22/01 used 389G -
>>
>> zclei22/01 available 3.13T -
>>
>> zclei22/01 referenced 389G -
>>
>> zclei22/01 compressratio 1.01x -
>>
>> zclei22/01 mounted yes -
>>
>> zclei22/01 quota none default
>>
>> zclei22/01 reservation none default
>>
>> zclei22/01 recordsize 128K local
>>
>> zclei22/01 mountpoint /zclei22/01 default
>>
>> zclei22/01 sharenfs off default
>>
>> zclei22/01 checksum on default
>>
>> zclei22/01 compression off local
>>
>> zclei22/01 atime on default
>>
>> zclei22/01 devices on default
>>
>> zclei22/01 exec on default
>>
>> zclei22/01 setuid on default
>>
>> zclei22/01 readonly off default
>>
>> zclei22/01 zoned off default
>>
>> zclei22/01 snapdir hidden default
>>
>> zclei22/01 aclinherit restricted default
>>
>> zclei22/01 canmount on default
>>
>> zclei22/01 xattr sa local
>>
>> zclei22/01 copies 1 default
>>
>> zclei22/01 version 5 -
>>
>> zclei22/01 utf8only off -
>>
>> zclei22/01 normalization none -
>>
>> zclei22/01 casesensitivity sensitive -
>>
>> zclei22/01 vscan off default
>>
>> zclei22/01 nbmand off default
>>
>> zclei22/01 sharesmb off default
>>
>> zclei22/01 refquota none default
>>
>> zclei22/01 refreservation none default
>>
>> zclei22/01 primarycache metadata local
>>
>> zclei22/01 secondarycache metadata local
>>
>> zclei22/01 usedbysnapshots 0 -
>>
>> zclei22/01 usedbydataset 389G -
>>
>> zclei22/01 usedbychildren 0 -
>>
>> zclei22/01 usedbyrefreservation 0 -
>>
>> zclei22/01 logbias latency default
>>
>> zclei22/01 dedup off default
>>
>> zclei22/01 mlslabel none default
>>
>> zclei22/01 sync disabled local
>>
>> zclei22/01 refcompressratio 1.01x -
>>
>> zclei22/01 written 389G -
>>
>> zclei22/01 logicalused 396G -
>>
>> zclei22/01 logicalreferenced 396G -
>>
>> zclei22/01 filesystem_limit none default
>>
>> zclei22/01 snapshot_limit none default
>>
>> zclei22/01 filesystem_count none default
>>
>> zclei22/01 snapshot_count none default
>>
>> zclei22/01 snapdev hidden default
>>
>> zclei22/01 acltype off default
>>
>> zclei22/01 context none default
>>
>> zclei22/01 fscontext none default
>>
>> zclei22/01 defcontext none default
>>
>> zclei22/01 rootcontext none default
>>
>> zclei22/01 relatime off default
>>
>> zclei22/01 redundant_metadata all default
>>
>> zclei22/01 overlay off default
>>
>>
>>
>>
>>
>> On Fri, Mar 3, 2017 at 2:52 PM, Juan Pablo <pablo.localhost at gmail.com>
>> wrote:
>>
>>> Which operating system version are you using for your zfs storage?
>>> do:
>>> zfs get all your-pool-name
>>> use arc_summary.py from freenas git repo if you wish.
>>>
>>>
>>> 2017-03-03 10:33 GMT-03:00 Arman Khalatyan <arm2arm at gmail.com>:
>>>
>>>> Pool load:
>>>> [root at clei21 ~]# zpool iostat -v 1
>>>> capacity operations
>>>> bandwidth
>>>> pool alloc free read write
>>>> read write
>>>> -------------------------------------- ----- ----- ----- -----
>>>> ----- -----
>>>> zclei21 10.1G 3.62T 0 112
>>>> 823 8.82M
>>>> HGST_HUS724040ALA640_PN2334PBJ52XWT1 10.1G 3.62T 0 46
>>>> 626 4.40M
>>>> logs - - -
>>>> - - -
>>>> lv_slog 225M 9.72G 0 66
>>>> 198 4.45M
>>>> cache - - -
>>>> - - -
>>>> lv_cache 9.81G 204G 0 46
>>>> 56 4.13M
>>>> -------------------------------------- ----- ----- ----- -----
>>>> ----- -----
>>>>
>>>> capacity operations
>>>> bandwidth
>>>> pool alloc free read write
>>>> read write
>>>> -------------------------------------- ----- ----- ----- -----
>>>> ----- -----
>>>> zclei21 10.1G 3.62T 0
>>>> 191 0 12.8M
>>>> HGST_HUS724040ALA640_PN2334PBJ52XWT1 10.1G 3.62T 0
>>>> 0 0 0
>>>> logs - - -
>>>> - - -
>>>> lv_slog 225M 9.72G 0
>>>> 191 0 12.8M
>>>> cache - - -
>>>> - - -
>>>> lv_cache 9.83G 204G 0
>>>> 218 0 20.0M
>>>> -------------------------------------- ----- ----- ----- -----
>>>> ----- -----
>>>>
>>>> capacity operations
>>>> bandwidth
>>>> pool alloc free read write
>>>> read write
>>>> -------------------------------------- ----- ----- ----- -----
>>>> ----- -----
>>>> zclei21 10.1G 3.62T 0
>>>> 191 0 12.7M
>>>> HGST_HUS724040ALA640_PN2334PBJ52XWT1 10.1G 3.62T 0
>>>> 0 0 0
>>>> logs - - -
>>>> - - -
>>>> lv_slog 225M 9.72G 0
>>>> 191 0 12.7M
>>>> cache - - -
>>>> - - -
>>>> lv_cache 9.83G 204G 0
>>>> 72 0 7.68M
>>>> -------------------------------------- ----- ----- ----- -----
>>>> ----- -----
>>>>
>>>>
>>>> On Fri, Mar 3, 2017 at 2:32 PM, Arman Khalatyan <arm2arm at gmail.com>
>>>> wrote:
>>>>
>>>>> Glusterfs now in healing mode:
>>>>> Receiver:
>>>>> [root at clei21 ~]# arcstat.py 1
>>>>> time read miss miss% dmis dm% pmis pm% mmis mm%
>>>>> arcsz c
>>>>> 13:24:49 0 0 0 0 0 0 0 0 0 4.6G
>>>>> 31G
>>>>> 13:24:50 154 80 51 80 51 0 0 80 51 4.6G
>>>>> 31G
>>>>> 13:24:51 179 62 34 62 34 0 0 62 42 4.6G
>>>>> 31G
>>>>> 13:24:52 148 68 45 68 45 0 0 68 45 4.6G
>>>>> 31G
>>>>> 13:24:53 140 64 45 64 45 0 0 64 45 4.6G
>>>>> 31G
>>>>> 13:24:54 124 48 38 48 38 0 0 48 38 4.6G
>>>>> 31G
>>>>> 13:24:55 157 80 50 80 50 0 0 80 50 4.7G
>>>>> 31G
>>>>> 13:24:56 202 68 33 68 33 0 0 68 41 4.7G
>>>>> 31G
>>>>> 13:24:57 127 54 42 54 42 0 0 54 42 4.7G
>>>>> 31G
>>>>> 13:24:58 126 50 39 50 39 0 0 50 39 4.7G
>>>>> 31G
>>>>> 13:24:59 116 40 34 40 34 0 0 40 34 4.7G
>>>>> 31G
>>>>>
>>>>>
>>>>> Sender
>>>>> [root at clei22 ~]# arcstat.py 1
>>>>> time read miss miss% dmis dm% pmis pm% mmis mm%
>>>>> arcsz c
>>>>> 13:28:37 8 2 25 2 25 0 0 2 25 468M
>>>>> 31G
>>>>> 13:28:38 1.2K 727 62 727 62 0 0 525 54 469M
>>>>> 31G
>>>>> 13:28:39 815 508 62 508 62 0 0 376 55 469M
>>>>> 31G
>>>>> 13:28:40 994 624 62 624 62 0 0 450 54 469M
>>>>> 31G
>>>>> 13:28:41 783 456 58 456 58 0 0 338 50 470M
>>>>> 31G
>>>>> 13:28:42 916 541 59 541 59 0 0 390 50 470M
>>>>> 31G
>>>>> 13:28:43 768 437 56 437 57 0 0 313 48 471M
>>>>> 31G
>>>>> 13:28:44 877 534 60 534 60 0 0 393 53 470M
>>>>> 31G
>>>>> 13:28:45 957 630 65 630 65 0 0 450 57 470M
>>>>> 31G
>>>>> 13:28:46 819 479 58 479 58 0 0 357 51 471M
>>>>> 31G
>>>>>
>>>>>
>>>>> On Thu, Mar 2, 2017 at 7:18 PM, Juan Pablo <pablo.localhost at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> hey,
>>>>>> what are you using for zfs? get an arc status and show please
>>>>>>
>>>>>>
>>>>>> 2017-03-02 9:57 GMT-03:00 Arman Khalatyan <arm2arm at gmail.com>:
>>>>>>
>>>>>>> no,
>>>>>>> ZFS itself is not on top of lvm. only ssd was spitted by lvm for
>>>>>>> slog(10G) and cache (the rest)
>>>>>>> but in any-case the ssd does not help much on glusterfs/ovirt load
>>>>>>> it has almost 100% cache misses....:( (terrible performance compare with
>>>>>>> nfs)
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Mar 2, 2017 at 1:47 PM, FERNANDO FREDIANI <
>>>>>>> fernando.frediani at upx.com> wrote:
>>>>>>>
>>>>>>>> Am I understanding correctly, but you have Gluster on the top of
>>>>>>>> ZFS which is on the top of LVM ? If so, why the usage of LVM was necessary
>>>>>>>> ? I have ZFS with any need of LVM.
>>>>>>>>
>>>>>>>> Fernando
>>>>>>>>
>>>>>>>> On 02/03/2017 06:19, Arman Khalatyan wrote:
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>> I use 3 nodes with zfs and glusterfs.
>>>>>>>> Are there any suggestions to optimize it?
>>>>>>>>
>>>>>>>> host zfs config 4TB-HDD+250GB-SSD:
>>>>>>>> [root at clei22 ~]# zpool status
>>>>>>>> pool: zclei22
>>>>>>>> state: ONLINE
>>>>>>>> scan: scrub repaired 0 in 0h0m with 0 errors on Tue Feb 28
>>>>>>>> 14:16:07 2017
>>>>>>>> config:
>>>>>>>>
>>>>>>>> NAME STATE READ WRITE
>>>>>>>> CKSUM
>>>>>>>> zclei22 ONLINE 0
>>>>>>>> 0 0
>>>>>>>> HGST_HUS724040ALA640_PN2334PBJ4SV6T1 ONLINE 0
>>>>>>>> 0 0
>>>>>>>> logs
>>>>>>>> lv_slog ONLINE 0
>>>>>>>> 0 0
>>>>>>>> cache
>>>>>>>> lv_cache ONLINE 0
>>>>>>>> 0 0
>>>>>>>>
>>>>>>>> errors: No known data errors
>>>>>>>>
>>>>>>>> Name:
>>>>>>>> GluReplica
>>>>>>>> Volume ID:
>>>>>>>> ee686dfe-203a-4caa-a691-26353460cc48
>>>>>>>> Volume Type:
>>>>>>>> Replicate (Arbiter)
>>>>>>>> Replica Count:
>>>>>>>> 2 + 1
>>>>>>>> Number of Bricks:
>>>>>>>> 3
>>>>>>>> Transport Types:
>>>>>>>> TCP, RDMA
>>>>>>>> Maximum no of snapshots:
>>>>>>>> 256
>>>>>>>> Capacity:
>>>>>>>> 3.51 TiB total, 190.56 GiB used, 3.33 TiB free
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
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>>>>>>>>
>>>>>>>>
>>>>>>>>
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>>>>>>>>
>>>>>>>
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>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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