[Gluster-users] cluster.min-free-disk is not working in distributed disperse volume

Susant Palai spalai at redhat.com
Thu Aug 27 12:50:15 UTC 2015 

Comments inline.

----- Original Message -----
From: "Mohamed Pakkeer" <mdfakkeer at gmail.com>
To: "Susant Palai" <spalai at redhat.com>
Cc: "Mathieu Chateau" <mathieu.chateau at lotp.fr>, "gluster-users" <gluster-users at gluster.org>, "Gluster Devel" <gluster-devel at gluster.org>, "Vijay Bellur" <vbellur at redhat.com>, "Pranith Kumar Karampuri" <pkarampu at redhat.com>, "Ashish Pandey" <aspandey at redhat.com>
Sent: Thursday, 27 August, 2015 5:41:02 PM
Subject: Re: [Gluster-users] cluster.min-free-disk is not working in distributed disperse volume


Hi Susant, 


Thanks for your reply.I think, we started the re-balance with force option. I requested a question on this mail thread regarding to run the rebalancer daemon forcefully on a dedicated peered node instead of selecting a cluster node automatically. 
>>> Currently there is no such feature to start rebalance on a dedicated node. 

If i start rebalancer, the rebalancer daemon starts the fixlayout on all nodes and migrate files on anyone node(always node 1 on our cluster), 
The first node cpu usage is always high during rebalance compare with rest of the cluster nodes. 


To reduce the cpu usage of rebalancer datanode( node1), i peered a new node( without disk) for re-balance and started the rebalancer. It started again the rebalancer on same node1. 


Is there any way to run the rebalancer daemon( file migration) forcefully on a dedicated peered node? 





Regards 
Backer 






On Thu, Aug 27, 2015 at 3:00 PM, Susant Palai < spalai at redhat.com > wrote: 


comments inline. 
++Ccing Pranith and Ashish to detail on disperse behaviour. 

----- Original Message ----- 
From: "Mohamed Pakkeer" < mdfakkeer at gmail.com > 
To: "Susant Palai" < spalai at redhat.com >, "Vijay Bellur" < vbellur at redhat.com > 
Cc: "Mathieu Chateau" < mathieu.chateau at lotp.fr >, "gluster-users" < gluster-users at gluster.org >, "Gluster Devel" < gluster-devel at gluster.org > 
Sent: Wednesday, 26 August, 2015 2:08:02 PM 
Subject: Re: [Gluster-users] cluster.min-free-disk is not working in distributed disperse volume 


Hi Susant, 



I am monitoring the re-balance daemon data movement. I have few queries about this data movement.I can see the data movement on the following cases. 


1. Source sub-volume is 90% occupied and destination sub-volume is 98% occupied. 
log info 
[2015-08-26 06:53:26.219674] I [MSGID: 109022] [dht-rebalance.c:1282:dht_migrate_file] 0-qubevaultdr-dht: completed migration of /Packages/Features/MPEG/B/BrokenHorses_FTR_S_EN-en_INT-XX_51_HD_RIM_IOP_OV/BrokenHorses_FTR_S_EN-en_INT-XX_51_HD_20150401_RIM_IOP_OV/BROKEN-HORSES_EN-en_INT_REV_MPEG-reel-3-mpeg2.mxf from subvolume qubevaultdr-disperse-7 to qubevaultdr-disperse-10 

Can you mention whether you gave force option while starting rebalance? If force flag is set, rebalance will move the data with out considering whether it is moving the data from a high avail space to a low avail space. 


2. Source sub-volume is 98% occupied and destination sub-volume is 97% occupied 
log info 
[2015-08-26 06:52:18.071802] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_ S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/BROKER-2_R3_MPEG_AUDIO_250514.mxf: attempting to move from glustertest-disperse-10 to glustertest-disperse-8 


3. source sub-volume is 94% occupied and destination sub-volume is 15% occupied 
log info 
[2015-08-26 06:53:26.348804] I [MSGID: 109022] [dht-rebalance.c:1282:dht_migrate_file] 0-glustertest-dht: completed migration of /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/ASSETMAP from sub-volume glustertest-disperse-26 to glustertest-disperse-56 


I can see the case 2 and 3 are valid cases because source has more data than destination. But Case 1 is invalid, because source sub-volume has less data than destination sub-volume. Also i have one more query about case 2. Why does the case 2 choose the destination as 94% occupied sub-volume instead of so many under utilized sub-volumes( 13% to 15 % sub-volumes- glustertest-disperse-36 to glustertest-disperse-71 ) ? 






Rebalance Log 


[2015-08-26 06:52:18.071802] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_ S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/BROKER-2_R3_MPEG_AUDIO_250514.mxf: attempting to move from glustertest-disperse-10 to glustertest-disperse-8 
[2015-08-26 06:52:22.633777] I [MSGID: 109022] [dht-rebalance.c:1282:dht_migrate_file] 0-glustertest-dht: completed migration of /Packages/Features/MPEG/B/Broker2_FTR_S_TE-X X_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/BROKER_SMK_MPEG_260514-reel-1-mpeg2.mxf from subvolume glustertest-disperse-9 to glustertest-disperse-34 
[2015-08-26 06:52:22.638955] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_ S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/BROKER-2_R1-2-3-4-5-6-7-8_MPEG_240514-reel-3-mpeg2.mxf: attempting to move from glustertest-disperse-14 to glustertest-disperse-39 
[2015-08-26 06:52:50.171304] I [MSGID: 109022] [dht-rebalance.c:1282:dht_migrate_file] 0-glustertest-dht: completed migration of /Packages/Features/MPEG/B/Broker2_FTR_S_TE-X X_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/BROKER-2_R3_MPEG_AUDIO_250514.mxf from sub-volume glustertest-disperse-10 to glustertest-disperse-8 
[2015-08-26 06:52:50.179238] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_ S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/BROKER-2_R1-2-3-4-5-6-7-8_MPEG_240514-reel-4-mpeg2.mxf: attempting to move from glustertest-disperse-16 to glustertest-disperse-5 
[2015-08-26 06:53:08.579988] I [MSGID: 109022] [dht-rebalance.c:1282:dht_migrate_file] 0-glustertest-dht: completed migration of /Packages/Features/MPEG/B/BrokenHorses_FTR_S _EN-en_INT-XX_51_HD_RIM_IOP_OV/BrokenHorses_FTR_S_EN-en_INT-XX_51_HD_20150401_RIM_IOP_OV/BROKEN-HORSES_EN-en_INT_REV_MPEG-reel-4-mpeg2.mxf from subvolume glustertest-disperse-2 to glustertest-disperse-23 
[2015-08-26 06:53:08.583021] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_ S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/IntegrityCheckResults.log: attempting to move from glustertest-disperse-18 to glustertest-disperse-0 
[2015-08-26 06:53:08.698014] I [MSGID: 109022] [dht-rebalance.c:1282:dht_migrate_file] 0-glustertest-dht: completed migration of /Packages/Features/MPEG/B/Broker2_FTR_S_TE-X X_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/IntegrityCheckResults.log from sub-volume glustertest-disperse-18 to glustertest-disperse-0 
[2015-08-26 06:53:08.703567] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_ S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/BROKER-2_R1-2-3-4-5-6-7-8_MPEG_240514-reel-5-mpeg2.mxf: attempting to move from glustertest-disperse-21 to glustertest-disperse-40 
[2015-08-26 06:53:26.219674] I [MSGID: 109022] [dht-rebalance.c:1282:dht_migrate_file] 0-glustertest-dht: completed migration of /Packages/Features/MPEG/B/BrokenHorses_FTR_S_EN-en_INT-XX_51_HD_RIM_IOP_OV/BrokenHorses_FTR_S_EN-en_INT-XX_51_HD_20150401_RIM_IOP_OV/BROKEN-HORSES_EN-en_INT_REV_MPEG-reel-3-mpeg2.mxf from subvolume glustertest-disperse-7 to glustertest-disperse-10 
[2015-08-26 06:53:26.226307] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/ASSETMAP: attempting to move from glustertest-disperse-26 to glustertest-disperse-56 
[2015-08-26 06:53:26.348804] I [MSGID: 109022] [dht-rebalance.c:1282:dht_migrate_file] 0-glustertest-dht: completed migration of /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/ASSETMAP from subvolume glustertest-disperse-26 to glustertest-disperse-56 
[2015-08-26 06:53:26.354215] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/B/Broker2_FTR_S_TE-XX_IN-A_51_HD_RIH_IOP_OV/Broker2_FTR-V1_S_TE-XX_IN-A_51_HD_20140526_RIH_IOP_OV/BROKER-2_R8_MPEG_AUDIO_250514.mxf: attempting to move from glustertest-disperse-29 to glustertest-disperse-16 




Subvolume0 to subvolume35 


root at glustertestdn001:# df -h 
Filesystem Size Used Avail Use% Mounted on Subvolume Details 
========== ==== ==== ===== ==== =========== ================== 


/dev/sdb1 3.7T 3.6T 51G 99% /media/disk1 - glustertest-disperse-0 
/dev/sdc1 3.7T 3.3T 384G 90% /media/disk2 - glustertest-disperse-1 
/dev/sdd1 3.7T 3.6T 76G 98% /media/disk3 - glustertest-disperse-2 
/dev/sde1 3.7T 3.5T 214G 95% /media/disk4 - glustertest-disperse-3 
/dev/sdf1 3.7T 3.3T 365G 91% /media/disk5 - glustertest-disperse-4 
/dev/sdg1 3.7T 3.5T 173G 96% /media/disk6 - glustertest-disperse-5 
/dev/sdh1 3.7T 3.4T 284G 93% /media/disk7 - glustertest-disperse-6 
/dev/sdi1 3.7T 3.3T 373G 90% /media/disk8 - glustertest-disperse-7 
/dev/sdj1 3.7T 3.6T 122G 97% /media/disk9 - glustertest-disperse-8 
/dev/sdk1 3.7T 3.4T 247G 94% /media/disk10 - glustertest-disperse-9 
/dev/sdl1 3.7T 3.6T 108G 98% /media/disk11 - glustertest-disperse-10 
/dev/sdm1 3.7T 3.4T 252G 94% /media/disk12 - glustertest-disperse-11 
/dev/sdn1 3.7T 3.5T 241G 94% /media/disk13 - glustertest-disperse-12 
/dev/sdo1 3.7T 3.6T 136G 97% /media/disk14 - glustertest-disperse-13 
/dev/sdp1 3.7T 3.4T 247G 94% /media/disk15 - glustertest-disperse-14 
/dev/sdq1 3.7T 3.5T 170G 96% /media/disk16 - glustertest-disperse-15 
/dev/sdr1 3.7T 3.4T 257G 94% /media/disk17 - glustertest-disperse-16 
/dev/sds1 3.7T 3.4T 258G 94% /media/disk18 - glustertest-disperse-17 
/dev/sdt1 3.7T 3.5T 171G 96% /media/disk19 - glustertest-disperse-18 
/dev/sdu1 3.7T 3.5T 184G 96% /media/disk20 - glustertest-disperse-19 
/dev/sdv1 3.7T 3.4T 281G 93% /media/disk21 - glustertest-disperse-20 
/dev/sdw1 3.7T 3.3T 347G 91% /media/disk22 - glustertest-disperse-21 
/dev/sdx1 3.7T 3.5T 191G 95% /media/disk23 - glustertest-disperse-22 
/dev/sdy1 3.7T 3.5T 217G 95% /media/disk24 - glustertest-disperse-23 
/dev/sdz1 3.7T 3.4T 263G 93% /media/disk25 - glustertest-disperse-24 
/dev/sdaa1 3.7T 3.6T 66G 99% /media/disk26 - glustertest-disperse-25 
/dev/sdab1 3.7T 3.5T 225G 94% /media/disk27 - glustertest-disperse-26 
/dev/sdac1 3.7T 3.4T 310G 92% /media/disk28 - glustertest-disperse-27 
/dev/sdad1 3.7T 3.5T 159G 96% /media/disk29 - glustertest-disperse-28 
/dev/sdae1 3.7T 3.3T 373G 91% /media/disk30 - glustertest-disperse-29 
/dev/sdaf1 3.7T 3.4T 305G 92% /media/disk31 - glustertest-disperse-30 
/dev/sdag1 3.7T 3.5T 184G 96% /media/disk32 - glustertest-disperse-31 
/dev/sdah1 3.7T 3.5T 186G 96% /media/disk33 - glustertest-disperse-32 
/dev/sdai1 3.7T 3.3T 373G 91% /media/disk34 - glustertest-disperse-33 
/dev/sdaj1 3.7T 3.3T 361G 91% /media/disk35 - glustertest-disperse-34 
/dev/sdak1 3.7T 3.3T 375G 90% /media/disk36 - glustertest-disperse-35 






Subvolume36 to subvolume71 





root at glustertestdn011:/var/log/glusterfs# df -h 


Filesystem Size Used Avail Use% Mounted on SubVolume Detail 
========== ==== ==== ===== ==== ========== ================ 
/dev/sdc1 3.7T 475G 3.2T 13% /media/disk1 - glustertest-disperse-36 
/dev/sdd1 3.7T 467G 3.2T 13% /media/disk2 - glustertest-disperse-37 
/dev/sde1 3.7T 492G 3.2T 14% /media/disk3 - glustertest-disperse-38 
/dev/sdf1 3.7T 470G 3.2T 13% /media/disk4 - glustertest-disperse-39 
/dev/sdg1 3.7T 498G 3.2T 14% /media/disk5 - glustertest-disperse-40 
/dev/sdh1 3.7T 461G 3.2T 13% /media/disk6 - glustertest-disperse-41 
/dev/sdi1 3.7T 451G 3.2T 13% /media/disk7 - glustertest-disperse-42 
/dev/sdj1 3.7T 464G 3.2T 13% /media/disk8 - glustertest-disperse-43 
/dev/sdk1 3.7T 426G 3.3T 12% /media/disk9 - glustertest-disperse-44 
/dev/sdl1 3.7T 425G 3.3T 12% /media/disk10 - glustertest-disperse-45 
/dev/sdm1 3.7T 460G 3.2T 13% /media/disk11 - glustertest-disperse-46 
/dev/sdn1 3.7T 478G 3.2T 13% /media/disk12 - glustertest-disperse-47 
/dev/sdo1 3.7T 475G 3.2T 13% /media/disk13 - glustertest-disperse-48 
/dev/sdp1 3.7T 520G 3.2T 14% /media/disk14 - glustertest-disperse-49 
/dev/sdq1 3.7T 456G 3.2T 13% /media/disk15 - glustertest-disperse-50 
/dev/sdr1 3.7T 442G 3.3T 12% /media/disk16 - glustertest-disperse-51 
/dev/sds1 3.7T 494G 3.2T 14% /media/disk17 - glustertest-disperse-52 
/dev/sdt1 3.7T 495G 3.2T 14% /media/disk18 - glustertest-disperse-53 
/dev/sdu1 3.7T 426G 3.3T 12% /media/disk19 - glustertest-disperse-54 
/dev/sdv1 3.7T 471G 3.2T 13% /media/disk20 - glustertest-disperse-55 
/dev/sdw1 3.7T 531G 3.2T 15% /media/disk21 - glustertest-disperse-56 
/dev/sdx1 3.7T 576G 3.1T 16% /media/disk22 - glustertest-disperse-57 
/dev/sdy1 3.7T 411G 3.3T 12% /media/disk23 - glustertest-disperse-58 
/dev/sdz1 3.7T 455G 3.2T 13% /media/disk24 - glustertest-disperse-59 
/dev/sdaa1 3.7T 427G 3.3T 12% /media/disk25 - glustertest-disperse-60 
/dev/sdab1 3.7T 442G 3.3T 12% /media/disk26 - glustertest-disperse-61 
/dev/sdac1 3.7T 449G 3.2T 13% /media/disk27 - glustertest-disperse-62 
/dev/sdad1 3.7T 446G 3.3T 12% /media/disk28 - glustertest-disperse-63 
/dev/sdae1 3.7T 412G 3.3T 12% /media/disk29 - glustertest-disperse-64 
/dev/sdaf1 3.7T 480G 3.2T 13% /media/disk30 - glustertest-disperse-65 
/dev/sdag1 3.7T 485G 3.2T 14% /media/disk31 - glustertest-disperse-66 
/dev/sdah1 3.7T 453G 3.2T 13% /media/disk32 - glustertest-disperse-67 
/dev/sdai1 3.7T 410G 3.3T 12% /media/disk33 - glustertest-disperse-68 
/dev/sdaj1 3.7T 457G 3.2T 13% /media/disk34 - glustertest-disperse-69 
/dev/sdak1 3.7T 444G 3.3T 12% /media/disk35 - glustertest-disperse-70 
/dev/sdal1 3.7T 484G 3.2T 13% /media/disk36 - glustertest-disperse-71 




Is this the normal behavior of DHT in distributed disperse volume ? 

Requesting Pranith and Ashish to comment on this. 



Thanks 
Backer 







On Tue, Aug 25, 2015 at 12:36 PM, Susant Palai < spalai at redhat.com > wrote: 


Mohamed, 
Will investigate in to weighted rebalance behavior. 

Susant 

----- Original Message ----- 
From: "Mohamed Pakkeer" < mdfakkeer at gmail.com > 
To: "Susant Palai" < spalai at redhat.com > 
Cc: "Mathieu Chateau" < mathieu.chateau at lotp.fr >, "gluster-users" < gluster-users at gluster.org >, "Gluster Devel" < gluster-devel at gluster.org > 
Sent: Tuesday, 25 August, 2015 9:40:01 AM 
Subject: Re: [Gluster-users] cluster.min-free-disk is not working in distributed disperse volume 




Hi Sasant, 
We have created the disperse volume across nodes. We stopped all the upload operations and started the rebalance last night.After overnight re-balance, some harddisk is occupied 100% and some disks have 13% disk space. 


disk1 belongs to disperse-set-0 ..... disk36 belongs to disperse-set-35 


df -h result of one data node 



/dev/sdb1 3.7T 3.7T 545M 100% /media/disk1 
/dev/sdc1 3.7T 3.2T 496G 87% /media/disk2 
/dev/sdd1 3.7T 3.7T 30G 100% /media/disk3 
/dev/sde1 3.7T 3.5T 173G 96% /media/disk4 
/dev/sdf1 3.7T 3.2T 458G 88% /media/disk5 
/dev/sdg1 3.7T 3.5T 143G 97% /media/disk6 
/dev/sdh1 3.7T 3.5T 220G 95% /media/disk7 
/dev/sdi1 3.7T 3.3T 415G 89% /media/disk8 
/dev/sdj1 3.7T 3.6T 72G 99% /media/disk9 
/dev/sdk1 3.7T 3.5T 186G 96% /media/disk10 
/dev/sdl1 3.7T 3.6T 65G 99% /media/disk11 
/dev/sdm1 3.7T 3.5T 195G 95% /media/disk12 
/dev/sdn1 3.7T 3.5T 199G 95% /media/disk13 
/dev/sdo1 3.7T 3.6T 78G 98% /media/disk14 
/dev/sdp1 3.7T 3.5T 200G 95% /media/disk15 
/dev/sdq1 3.7T 3.6T 119G 97% /media/disk16 
/dev/sdr1 3.7T 3.5T 206G 95% /media/disk17 
/dev/sds1 3.7T 3.5T 193G 95% /media/disk18 
/dev/sdt1 3.7T 3.6T 131G 97% /media/disk19 
/dev/sdu1 3.7T 3.5T 141G 97% /media/disk20 
/dev/sdv1 3.7T 3.5T 243G 94% /media/disk21 
/dev/sdw1 3.7T 3.4T 299G 92% /media/disk22 
/dev/sdx1 3.7T 3.5T 163G 96% /media/disk23 
/dev/sdy1 3.7T 3.5T 168G 96% /media/disk24 
/dev/sdz1 3.7T 3.5T 219G 95% /media/disk25 
/dev/sdaa1 3.7T 3.7T 37G 100% /media/disk26 
/dev/sdab1 3.7T 3.5T 172G 96% /media/disk27 
/dev/sdac1 3.7T 3.4T 276G 93% /media/disk28 
/dev/sdad1 3.7T 3.6T 108G 98% /media/disk29 
/dev/sdae1 3.7T 3.3T 399G 90% /media/disk30 
/dev/sdaf1 3.7T 3.5T 240G 94% /media/disk31 
/dev/sdag1 3.7T 3.6T 122G 97% /media/disk32 
/dev/sdah1 3.7T 3.5T 147G 97% /media/disk33 
/dev/sdai1 3.7T 3.4T 342G 91% /media/disk34 
/dev/sdaj1 3.7T 3.4T 288G 93% /media/disk35 
/dev/sdak1 3.7T 3.4T 342G 91% /media/disk36 


disk1 belongs to disperse-set-0. Rebalancer logs shows, still rebalancer is trying to fill the disperse-set-0 after filling to 100% 




[2015-08-24 19:52:53.036622] E [MSGID: 109023] [dht-rebalance.c:672:__dht_check_free_space] 0-glustertest-dht: data movement attempted from node (glustertest-disperse-7) to node (glustertest-disperse-0) which does not have required free space for (/Packages/Features/MPEG/A/AMEO-N-CHALLANGE_FTR_S_BEN-XX_IN-UA_51_HD_RIC_OV/AMEO-N-CHALLANGE_FTR_S_BEN-XX_IN-UA_51_HD_20110521_RIC_OV/AMI-NEBO-C_R3_AUDIO_190511.mxf) 


[2015-08-24 19:52:53.042026] I [dht-rebalance.c:1002:dht_migrate_file] 0-glustertest-dht: /Packages/Features/MPEG/A/AMEO-N-CHALLANGE_FTR_S_BEN-XX_IN-UA_51_HD_RIC_OV/AMEO-N-CHALLANGE_FTR_S_BEN-XX_IN-UA_51_HD_20110521_RIC_OV/AMINEBO-CHALLANGE_BEN_R1-2-3-4-5-6_MPEG_200511-reel-5-mpeg2.mxf: attempting to move from glustertest-disperse-13 to glustertest-disperse-0 


I think, cluster.weighted-rebalance and cluster.min-free-dis k have bugs for re-balancing the data, based on weight and disk free space. 




Thanks 
Backer 




On Mon, Aug 24, 2015 at 4:28 PM, Mohamed Pakkeer < mdfakkeer at gmail.com > wrote: 



Hi Susant, 


Thanks for your quick reply. We are not updating any files. Actually we are archiving video files on this cluster. I think there is a bug in cluster.min-free-disk. 


Also i would like to know about rebalance the cluster. Currently we have 20 nodes and 10 nodes hard disks are almost full . So we need to rebalance the data. If i run the rebalancer, it starts on first node(node1) and starts the migration process. The first node cpu usage is always high during rebalance compare with rest of the cluster nodes.To reduce the cpu usage of rebalancer datanode( node1), i peer a new node( without disk) for rebalance and start the rebalancer. It starts again the rebalancer on same node1. How can we run a rebalancer on a dedicated node? 


Also we are facing memory leaks in fixlayout and heal full operations. 


Regards 
Backer 




On Mon, Aug 24, 2015 at 2:57 PM, Susant Palai < spalai at redhat.com > wrote: 


Hi, 
Cluster.min-free-disk controls new file creation on the bricks. If you happen to write to the existing files on the brick and that is leading to brick getting full, then most probably you should run a rebalance. 

Regards, 
Susant 



----- Original Message ----- 
From: "Mathieu Chateau" < mathieu.chateau at lotp.fr > 
To: "Mohamed Pakkeer" < mdfakkeer at gmail.com > 
Cc: "gluster-users" < gluster-users at gluster.org >, "Gluster Devel" < gluster-devel at gluster.org > 
Sent: Monday, 24 August, 2015 2:47:00 PM 
Subject: Re: [Gluster-users] cluster.min-free-disk is not working in distributed disperse volume 




720 brick! Respect ! 
Le 24 août 2015 09:48, "Mohamed Pakkeer" < mdfakkeer at gmail.com > a écrit : 



Hi, 


I have a cluster of 720 bricks, all bricks are 4TB in size. I have change the cluster.min-free-disk default value 10% to 3%. So all the disks should have 3% minimum disk space free. But some cluster disks are getting full now. Is there any additional configuration for keeping some percentage of disk space kept free? 





Volume Name: glustertest 
Type: Distributed-Disperse 
Volume ID: 2b575b5c-df2e-449c-abb9-c56cec27e609 
Status: Started 
Number of Bricks: 72 x (8 + 2) = 720 
Transport-type: tcp 





Options Reconfigured: 
features.default-soft-limit: 95% 
cluster.min-free-disk: 3% 
performance.readdir-ahead: on 


df -h of one node 



/dev/sdb1 3.7T 3.6T 132G 97% /media/disk1 
/dev/sdc1 3.7T 3.2T 479G 88% /media/disk2 
/dev/sdd1 3.7T 3.6T 109G 98% /media/disk3 


Any help will be greatly appreciated. 




Regards 
Backer 







_______________________________________________ 
Gluster-users mailing list 
Gluster-users at gluster.org 
http://www.gluster.org/mailman/listinfo/gluster-users 

_______________________________________________ 
Gluster-users mailing list 
Gluster-users at gluster.org 
http://www.gluster.org/mailman/listinfo/gluster-users 










-- 

Thanks & Regards 
K. Mohamed Pakkeer 
Mobile- 0091-8754410114

More information about the Gluster-users mailing list