[DRBD-user] Can't grow my DRBD device

[Pascal Robert]

> Le 2016-01-22 à 16:57, Ricardo Branco <ricardo at wenn.com> a écrit :
> 
> I run LVM under and over drbd so yours is slightly different from mine.
> Did you do e2resize to your mounted partition?
> I am not sure if DRBD would indicate the total size of the syncd data or that of the mounted partition.

That was my mistake. I was calling resize2fs on /dev/mysqldata0/drbd-main instead of /dev/drbd0 

> Sent from my BlackBerry 10 smartphone.
>   Original Message  
> From: Pascal Robert
> Sent: Friday, 22 January 2016 21:48
> To: Ricardo Branco
> Cc: drbd-user at lists.linbit.com
> Subject: Re: [DRBD-user] Can't grow my DRBD device
> 
> 
>> Le 2016-01-22 à 16:34, Ricardo Branco <ricardo at wenn.com> a écrit :
>> 
>> Give vgdisplay and pvdisplay.
> 
> [root at db1 ~]# vgdisplay 
> --- Volume group ---
> VG Name mysqldata0
> System ID 
> Format lvm2
> Metadata Areas 3
> Metadata Sequence No 6
> VG Access read/write
> VG Status resizable
> MAX LV 0
> Cur LV 1
> Open LV 1
> Max PV 0
> Cur PV 3
> Act PV 3
> VG Size 119,98 GiB
> PE Size 4,00 MiB
> Total PE 30716
> Alloc PE / Size 30461 / 118,99 GiB
> Free PE / Size 255 / 1020,00 MiB
> VG UUID vBpnT5-BYr7-5YnX-WhmK-MSSn-H1e1-K8jKJp
> 
> [root at db1 ~]# pvdisplay
> --- Physical volume ---
> PV Name /dev/xvdb
> VG Name mysqldata0
> PV Size 20,00 GiB / not usable 4,00 MiB
> Allocatable yes 
> PE Size 4,00 MiB
> Total PE 5119
> Free PE 255
> Allocated PE 4864
> PV UUID tpi7HM-DWpk-ghjH-7X02-tnEd-e9zL-TZKllc
> 
> --- Physical volume ---
> PV Name /dev/xvdc1
> VG Name mysqldata0
> PV Size 19,99 GiB / not usable 1,43 MiB
> Allocatable yes (but full)
> PE Size 4,00 MiB
> Total PE 5118
> Free PE 0
> Allocated PE 5118
> PV UUID kgXx4D-Awq0-6LBa-gsGe-IxM7-GL00-lq8BcH
> 
> --- Physical volume ---
> PV Name /dev/xvde1
> VG Name mysqldata0
> PV Size 80,00 GiB / not usable 1,35 MiB
> Allocatable yes (but full)
> PE Size 4,00 MiB
> Total PE 20479
> Free PE 0
> Allocated PE 20479
> PV UUID NSILm6-a9LT-JxxP-JF7r-8mZo-EiRB-YktHwH
> 
> --- Physical volume ---
> PV Name /dev/xvda2
> VG Name VG
> PV Size 29,51 GiB / not usable 11,00 MiB
> Allocatable yes (but full)
> PE Size 32,00 MiB
> Total PE 944
> Free PE 0
> Allocated PE 944
> PV UUID clH3oy-w3Jt-96H1-A1Jd-OydP-dDAl-jyGyxZ
> 
> 
>> Did you add additional disk to your VG then expand the LV before you did drbd resize?
> 
> Yep.
> 
>> 
>> Sent from my BlackBerry 10 smartphone.
>> Original Message 
>> From: Pascal Robert
>> Sent: Friday, 22 January 2016 21:30
>> To: drbd-user at lists.linbit.com
>> Subject: [DRBD-user] Can't grow my DRBD device
>> 
>> Hi,
>> 
>> I’m running DRBD on both of a LVM volume. Disk space was lacking, so I added a (virtual) disk, grow the LVM but calling « drbdadmin resize mysqldata » don’t do anything. And yes, the LVM was augmented on both nodes. Any steps missing (according to my googling, growing the LVM and calling "drbdadm resize mysqldata" should be enough)?
>> 
>> [root at db1 ~]# lvdisplay 
>> --- Logical volume ---
>> LV Path /dev/mysqldata0/drbd-main
>> LV Name drbd-main
>> VG Name mysqldata0
>> LV UUID QeQP4s-mrLT-5DBi-qkyK-Km30-lvIY-J2Xl7M
>> LV Write Access read/write
>> LV Creation host, time localhost.localdomain, 2015-06-19 10:43:29 -0400
>> LV Status available
>> # open 2
>> LV Size 118,99 GiB
>> Current LE 30461
>> Segments 3
>> Allocation inherit
>> Read ahead sectors auto
>> - currently set to 256
>> Block device 253:2
>> 
>> [root at db1 ~]# drbd-overview 
>> 0:mysqldata/0 Connected Primary/Secondary UpToDate/UpToDate /data/mysql ext4 39G 2.0G 35G 6% 
>> 
>> [root at db1 ~]# drbdadm resize mysqldata
>> 
>> [root at db1 ~]# cat /proc/drbd 
>> version: 8.4.6 (api:1/proto:86-101)
>> GIT-hash: 833d830e0152d1e457fa7856e71e11248ccf3f70 build by phil at Build64R6, 2015-04-09 14:35:00
>> 0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
>> ns:97670132 nr:0 dw:36839300 dr:102839901 al:8282 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
>> 
>> [root at db1 ~]# cat /etc/drbd.d/mysqldata.res 
>> resource mysqldata {
>> options {
>> on-no-data-accessible suspend-io;
>> }
>> net {
>> cram-hmac-alg "sha1";
>> shared-secret "XXXXXXXX";
>> protocol C;
>> }
>> 
>> on db1.druide {
>> address 10.6.79.20:7788;
>> device /dev/drbd0;
>> disk /dev/mysqldata0/drbd-main;
>> meta-disk internal;
>> }
>> on db2.druide {
>> address 10.6.79.21:7788;
>> device /dev/drbd0;
>> disk /dev/mysqldata0/drbd-main;
>> meta-disk internal;
>> }
>> }
>> 
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> 
>