Have a quick question on adding space via a new disk/block device to a non-root/ext3 mount-point that has data and is mounted.
I Have an ext3 mountpoint '/u01', which has a device '/dev/sdb' attached.
[root@vm2 ~]# findmnt -l /u01
TARGET SOURCE FSTYPE OPTIONS
/u01 /dev/sdb ext3 rw,relatime,seclabel,errors=continue,user_xattr,acl,barrier=1,data=ordered
Problem is this device is almost full (67%) and cannot be extended.
[root@vm2 ~]# df -Th /u01
Filesystem Type Size Used Avail Use% Mounted on
/dev/sdb ext3 12G 7.5G 3.8G 67% /u01
[root@vm2 ~]#
So I added another device '/dev/sdk' of size 20g and partitioned it as below.
[root@vm2 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 5G 0 disk
├─sda1 8:1 0 500M 0 part /boot
└─sda2 8:2 0 4.5G 0 part
├─ol-root 252:0 0 16G 0 lvm /
└─ol-swap 252:1 0 512M 0 lvm [SWAP]
sdb 8:16 0 12G 0 disk /u01
sdc 8:32 0 30G 0 disk /u02
sdd 8:48 0 30G 0 disk /u03
sde 8:64 0 4G 0 disk /redo1
sdf 8:80 0 4G 0 disk /redo2
sdg 8:96 0 4G 0 disk /cntl1
sdh 8:112 0 4G 0 disk /cntl2
sdi 8:128 0 6G 0 disk /gghome
sdj 8:144 0 12G 0 disk
└─sdj1 8:145 0 12G 0 part
└─ol-root 252:0 0 16G 0 lvm /
sdk 8:160 0 20G 0 disk
└─sdk1 8:161 0 20G 0 part
sr0 11:0 1 1024M 0 rom
[root@vm2 ~]#
I want to understand if this new device '/dev/sdk1' can also be added the mount-point '/u01' so as to resize it to 12g(sdb) + 20g(sdk1), so that when I move heavy files to /u01, I dont get a space error.
There are no clear methods I saw so far which describe the same. Mostly people talk about extending the root partition(xfs), but for me, this '/u01' is not mounted on the root partition, but on a separate ext3.
Here are some outputs which may help.
[root@vm2 ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/ol-root xfs 16G 3.5G 13G 22% /
devtmpfs devtmpfs 2.4G 0 2.4G 0% /dev
tmpfs tmpfs 2.4G 80K 2.4G 1% /dev/shm
tmpfs tmpfs 2.4G 8.9M 2.4G 1% /run
tmpfs tmpfs 2.4G 0 2.4G 0% /sys/fs/cgroup
/dev/sda1 xfs 497M 149M 349M 30% /boot
/dev/sdb ext3 12G 7.5G 3.8G 67% /u01
/dev/sdc ext3 30G 5.9G 23G 21% /u02
/dev/sdi ext3 6.0G 141M 5.5G 3% /gghome
/dev/sdh ext3 4.0G 137M 3.7G 4% /cntl2
/dev/sdd ext3 30G 173M 28G 1% /u03
/dev/sde ext3 4.0G 137M 3.7G 4% /redo1
/dev/sdg ext3 4.0G 137M 3.7G 4% /cntl1
/dev/sdf ext3 4.0G 137M 3.7G 4% /redo2
Physical Volume Display (PVDISPLAY)
[root@vm2 ~]# pvdisplay /dev/sdk1
--- Physical volume ---
PV Name /dev/sdk1
VG Name ol
PV Size 20.00 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 5119
Free PE 5119
Allocated PE 0
PV UUID 5tsaXp-bz1j-UwLS-lLRk-capI-i4rW-ps9Lk4
Volume Group Display (vgdisplay)
[root@vm2 ~]# vgdisplay
--- Volume group ---
VG Name ol
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 7
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 4
Act PV 3
VG Size 86.50 GiB
PE Size 4.00 MiB
Total PE 22143
Alloc PE / Size 4225 / 16.50 GiB
Free PE / Size 17918 / 69.99 GiB
VG UUID Jfwpry-P7rO-NocS-DrVA-J3q2-tIOR-fkE41G
Logical Volume Display (lvdisplay)
[root@vm2 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/ol/swap
LV Name swap
VG Name ol
LV UUID 3ZrLkL-JGYa-8EdA-oW7S-uCS2-dbmS-KdCI1h
LV Write Access read/write
LV Creation host, time localhost, 2016-03-06 14:40:27 -0800
LV Status available
# open 2
LV Size 512.00 MiB
Current LE 128
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 252:1
--- Logical volume ---
LV Path /dev/ol/root
LV Name root
VG Name ol
LV UUID WXQ5ne-UYgM-A53J-s1KE-ec72-Y52x-K5Qb1v
LV Write Access read/write
LV Creation host, time localhost, 2016-03-06 14:40:27 -0800
LV Status available
# open 1
LV Size 16.00 GiB
Current LE 4097
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 252:0
I have already tried the below which fails and does'nt show the new device added to '/u01', which does'nt work
[root@vm2 ~]# umount /u01
[root@vm2 ~]# mount /dev/sdk1 /u01
Here is my fstab file as well.
[root@vm2 ~]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Sun Mar 6 22:40:28 2016
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/ol-root / xfs defaults 0 0
UUID=22363586-3aee-4128-aa86-4ff1ff7f30a2 /boot xfs defaults 0 0
/dev/mapper/ol-swap swap swap defaults 0 0
/dev/sdb /u01 auto defaults,nofail 0 2
/dev/sdc /u02 auto defaults,nofail 0 2
/dev/sdd /u03 auto defaults,nofail 0 2
/dev/sde /redo1 auto defaults,nofail 0 2
/dev/sdf /redo2 auto defaults,nofail 0 2
/dev/sdg /cntl1 auto defaults,nofail 0 2
/dev/sdh /cntl2 auto defaults,nofail 0 2
/dev/sdi /gghome auto defaults,nofail 0 2
Lastly the Linux version
[root@vm2 ~]# uname -a
Linux vm2 3.8.13-55.1.6.el7uek.x86_64 #2 SMP Wed Feb 11 14:18:22 PST 2015 x86_64 x86_64 x86_64 GNU/Linux
[root@vm2 ~]#
FYI : this server/vm cannot connect to the internet to download custom rpm or packages like mhddfs or unionfs. So restricted to traditional approaches.
Any help is appreciated.
Thanks N23