xfs_growfs: is not a mounted xfs filesystem when trying to grow ol-root

Question

I have 25+ VM's running OL7.5. As they grow/get repurposed I sometimes need to add more HDD to them.

I have added space to ol-root and ol-swap many times before, following [in summary] :

fdisk to create partition
partprobe -s
pvcreate /dev/sdb1
vgextend ol /dev/sdb1
pvscan
lvextend /dev/mapper/ol-root /dev/sdb1

but on some VM's I can no longer add that ol-root space to the file system:

xfs_growfs /dev/mapper/ol-root
Error:   xfs_growfs: /dev/mapper/ol-root is not a mounted XFS filesystem

I have done this many many times before with no issue on the same VM's. On this VM I built from scratch and have added sda3 and sda4.

On this particular box I need to upgrade 11g to 18c. I need 10G ol-swap and more HDD to install the 18c database.

$ lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0          11:0    1 1024M  0 rom
sda           8:0    0   55G  0 disk
├─sda4        8:4    0   10G  0 part
│ └─ol-root 252:0    0   46G  0 lvm  /
├─sda2        8:2    0   15G  0 part
│ ├─ol-swap 252:1    0    8G  0 lvm  [SWAP]
│ └─ol-root 252:0    0   46G  0 lvm  /
├─sda3        8:3    0   29G  0 part
│ ├─ol-swap 252:1    0    8G  0 lvm  [SWAP]
│ └─ol-root 252:0    0   46G  0 lvm  /
└─sda1        8:1    0    1G  0 part /boot


$ df -Th /dev/mapper/ol-root
Filesystem          Type  Size  Used Avail Use% Mounted on
/dev/mapper/ol-root xfs    46G   45G  1.5G  97% /

Any suggestions please?

Many thanks

Darren

p.s. The box im trying to expand is a clone of the VM above. After multiple attempts to grow the file system i killed the box. The source box shares the same issue with xfs_growfs even when i dont add an sdb partition. The xfs_growfs should return a much different error when there is no space to allocate.

And use lvextend -L+10GB /dev/mapper/ol-root (for example) to add 10GB to the LV — Romeo Ninov, Jun 21, 2019 at 11:16
Hi, i do '-L' when im adding space to ol-swap but usually i just want to add all the space that is available to ol-root — David Janes, Jun 21, 2019 at 11:20
"Check is the LV is mounted as read-only" not sure how i do this? The file system is read-write. — David Janes, Jun 21, 2019 at 11:22
man page for xfs_growfs state that argument is mount point. (e.g. xfs_growfs /) — Archemar, Jun 21, 2019 at 11:25

Alexander Tolkachev · Accepted Answer · 2019-10-04 18:45:39Z

14

You need to target the mount-point not the LVM mapper for the xfs_growfs command. This seems to be a new "feature" since we used to be able to xfs_growfs on the mapper.

But the man page specifically refers to mount-point:

xfs_growfs(8) System Manager's Manual xfs_growfs(8)

NAME xfs_growfs, xfs_info - expand an XFS filesystem

SYNOPSIS xfs_growfs [ -dilnrx ] [ -D size ] [ -e rtextsize ] [ -L size ] [ -m maxpct ] [ -t mtab ] [ -R size ] mount-point

edited Oct 4, 2019 at 18:45

Alexander Tolkachev

4,6383 gold badges15 silver badges24 bronze badges

answered Oct 4, 2019 at 18:33

Jason Richling

1411 silver badge3 bronze badges

Add a comment |

David Janes · Accepted Answer · 2019-06-21 11:48:27Z

OK so doing -L and xxfs_growfs has worked. VM had ol-root 6GB free

Code for the actual VM, step by step: Adding 16GB to new HDD in vSphere

# fdisk -l

Disk /dev/sda: 59.1 GB, 59055800320 bytes, 115343360 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000cbfb1

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200    33554431    15727616   8e  Linux LVM
/dev/sda3        33554432    94371839    30408704   8e  Linux LVM
/dev/sda4        94371840   115343359    10485760   8e  Linux LVM

Disk /dev/sdb: 17.2 GB, 17179869184 bytes, 33554432 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/ol-root: 49.4 GB, 49379540992 bytes, 96444416 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/ol-swap: 8589 MB, 8589934592 bytes, 16777216 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

# ls /sys/class/scsi_device
1:0:0:0  2:0:0:0  2:0:1:0
# echo 1 > /sys/class/scsi_device/1\:0\:0\:0/device/rescan
# echo 1 > /sys/class/scsi_device/2\:0\:0\:0/device/rescan
# echo 1 > /sys/class/scsi_device/2\:0\:1\:0/device/rescan

fdisk /dev/sdb, n, p, 1, t, 1, 8e, w

# fdisk -l

Disk /dev/sda: 59.1 GB, 59055800320 bytes, 115343360 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000cbfb1

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200    33554431    15727616   8e  Linux LVM
/dev/sda3        33554432    94371839    30408704   8e  Linux LVM
/dev/sda4        94371840   115343359    10485760   8e  Linux LVM

Disk /dev/sdb: 17.2 GB, 17179869184 bytes, 33554432 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x86979f60

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048    33554431    16776192   8e  Linux LVM

Disk /dev/mapper/ol-root: 49.4 GB, 49379540992 bytes, 96444416 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/ol-swap: 8589 MB, 8589934592 bytes, 16777216 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Partprobe

# partprobe -s
/dev/sda: msdos partitions 1 2 3 4
/dev/sdb: msdos partitions 1

pvcreate

# pvcreate /dev/sdb1
  Physical volume "/dev/sdb1" successfully created.

vgextend

# vgextend ol /dev/sdb1
  Volume group "ol" successfully extended

pvscan

# pvscan
  PV /dev/sda2   VG ol              lvm2 [<15.00 GiB / 0    free]
  PV /dev/sda3   VG ol              lvm2 [<29.00 GiB / 0    free]
  PV /dev/sda4   VG ol              lvm2 [<10.00 GiB / 0    free]
  PV /dev/sdb1   VG ol              lvm2 [<16.00 GiB / <16.00 GiB free]
  Total: 4 [69.98 GiB] / in use: 4 [69.98 GiB] / in no VG: 0 [0   ]

lvextend

# lvextend -L+16380M /dev/mapper/ol-root /dev/sdb1
  Size of logical volume ol/root changed from <45.99 GiB (11773 extents) to 61.98 GiB (15868 extents).
  Logical volume ol/root successfully resized.

xfs_growfs

# xfs_growfs /
meta-data=/dev/mapper/ol-root    isize=256    agcount=14, agsize=877824 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=0        finobt=0 spinodes=0 rmapbt=0
         =                       reflink=0
data     =                       bsize=4096   blocks=12055552, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 12055552 to 16248832
# df -h
Filesystem           Size  Used Avail Use% Mounted on
devtmpfs             4.8G     0  4.8G   0% /dev
tmpfs                4.8G     0  4.8G   0% /dev/shm
tmpfs                4.8G  9.4M  4.8G   1% /run
tmpfs                4.8G     0  4.8G   0% /sys/fs/cgroup
/dev/mapper/ol-root   62G   42G   21G  68% /
/dev/sda1           1014M  419M  596M  42% /boot
tmpfs                973M   12K  973M   1% /run/user/42
tmpfs                973M     0  973M   0% /run/user/0

I followed this: https://ma.ttias.be/increase-expand-xfs-filesystem-in-red-hat-rhel-7-cento7/

Why would it work before but not now ?

This is very confusing. What part of this answer is the actual solution? — Michael Hampton, Jun 21, 2019 at 14:06
Using -L in lvextend -L+16380M /dev/mapper/ol-root /dev/sdb1 and not specifying /dev/mapper/ol-root in xfs_growfs. Just use: xfs_growfs / — David Janes, Jul 3, 2019 at 10:46
It worked before because that tutorial is out of date. See the more recently posted answer. — Michael Hampton, Jul 21, 2020 at 15:23

Stack Exchange Network

xfs_growfs: is not a mounted xfs filesystem when trying to grow ol-root

2 Answers 2

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged
xfs
.

Hot Network Questions

xfs_growfs: is not a mounted xfs filesystem when trying to grow ol-root

2 Answers 2

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged xfs.

Related

Hot Network Questions

Not the answer you're looking for? Browse other questions tagged
xfs
.