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

[Ricardo Branco]

Give vgdisplay and pvdisplay.
Did you add additional disk to your VG then expand the LV before you did drbd resize?

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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