We have a Dell R420 with the Perc H710 Mini that was configured with 3 1TB drives in a RAID 5. I added another 1TB drive and thanks to a little help from the Dell discussion board, the RAID 5 reconfigured correctly and now has 2.47 TiB. I used the well-known tactic of simply opening Gparted and sliding the existing partition up to 1.9TB and used the lvextend -r -l +100%FREE command to get it there. But we'd like to use the rest of the unallocated disk space for our /home partition.
First I ran into this error:
parted ---pretend-input-tty /dev/sda resizepart 2 100%
Error: partition length of 5266759680 sectors exceeds the msdos-partition-table-imposed maximum of 4294967295
I found this tip on SO, which says to create a new partition of the unallocated disk space
I tested that but kept running in this error:
lvextend -L1844.1G /dev/mapper/fedora_newserver-home
Rounding size to boundary between physical extents: 1.80 TiB.
Insufficient free space: 214489 extents needed, but only 0 available
From the tutorial:
Note that the
-Lparameter oflvextendindicates the total size of the Logical Volume, not the amount that the Logical Volume is extended
Am I misunderstanding the syntax here? You can see from fdisk the entire logical volume as 2.47 TB. I'm trying to add the newly available space to the home partition.
fdisk -l
Disk /dev/sda: 2.47 TiB, 2698581639168 bytes, 5270667264 sectors
Disk model: PERC H710
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xa23c34a0
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 3907583 3905536 1.9G 83 Linux
/dev/sda2 3907584 4006645759 4002738176 1.9T 8e Linux LVM
Another SF suggestion has an example of a single line command to achieve what I'm looking to do but wanted to see if there was a more preferred way.
I deleted that extra partition above in Gparted so I can try again.
By request:
pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 fedora_newserver lvm2 a-- 1.86t 0
vgs
VG #PV #LV #SN Attr VSize VFree
fedora_newserver 1 5 0 wz--n- 1.86t 0
Thanks @NasirRiley! I had to slightly modify your instructions.
pvcreate /dev/sda3
WARNING: ext4 signature detected on /dev/sda3 at offset 1080. Wipe it? [y/n]: y
Wiping ext4 signature on /dev/sda3.
Physical volume "/dev/sda3" successfully created.
Then:
vgextend fedora_newserver /dev/sda3
Volume group "fedora_newserver" successfully extended
Next, didn't quite get us the entire unallocated space:
lvextend -l +100%FREE /dev/mapper/fedora_newserver-home
Size of logical volume fedora_newserver/home changed from 1.21 TiB (317766 extents) to 1.80 TiB (472065 extents).
Logical volume fedora_newserver/home successfully resized.
The next command errored:
xfs_growfs /dev/mapper/fedora_newserver-home xfs_growfs: /dev/mapper/fedora_newserver-home is not a mounted XFS filesystem
Then:
lvdisplay | sed -n '/home/,/Size/p'
LV Path /dev/fedora_newserver/home
LV Name home
VG Name fedora_newserver
LV UUID j94360-O22L-
LV Write Access read/write
LV Creation host, time ourserver.edu, 2018-03-03 13:55:06 -0500
LV Status available
# open 1
LV Size 1.80 TiB
We weren't quite there:
df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 24G 4.0K 24G 1% /dev
tmpfs 24G 23M 24G 1% /dev/shm
tmpfs 24G 3.1M 24G 1% /run
/dev/mapper/fedora_newserver-root 280G 41G 240G 15% /
tmpfs 24G 4.2M 24G 1% /tmp
/dev/mapper/fedora_newserver-home 1.3T 859G 383G 70% /u/newserver
/dev/sda1 1.9G 256M 1.5G 15% /boot
/dev/mapper/fedora_newserver-var 187G 73G 114G 39% /var
/dev/mapper/fedora_newserver-usr_local 187G 58G 129G 32% /usr/local
Here's what finally worked:
lvextend -r -l +100%FREE /dev/mapper/fedora_neweserver-home
Size of logical volume fedora_newserver/home unchanged from 1.80 TiB (472065 extents).
Logical volume fedora_newserver/home successfully resized.
meta-data=/dev/mapper/fedora_newserver-home isize=512 agcount=7, agsize=48828160 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=0, rmapbt=0
= reflink=0
data = bsize=4096 blocks=325392384, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=95367, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 325392384 to 483394560
Now we're there:
df -h|grep home
/dev/mapper/fedora_newserver-home 1.9T 860G 985G 47% /u/newserver
Not sure why the xfs command fails, we clearly are using XFS, perhaps it's being in a LVM?
From blkid:
/dev/mapper/fedora_newserver-home: LABEL="home" UUID="5aab1b3f-5cb5" TYPE="xfs"
OK the revised XFS command did NOT work:
xfs_growfs /home
xfs_growfs: /home is not a mounted XFS filesystem
Duh, had to use the actual mount point:
xfs_growfs /u/newserver
meta-data=/dev/mapper/fedora_newserver-home isize=512 agcount=10, agsize=48828160 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=0, rmapbt=0
= reflink=0
data = bsize=4096 blocks=483394560, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=95367, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
As you can see from
pvsandvgs, you don't have any space available in them to extend thefedora_newserver-homelogical volume. You need to useparted(orfdisk) to create a new partition,/dev/sda3with the rest of the space from/dev/sda. I'm taking it that you know how to do this considering that you created the other ones.After that, create a new physical volume:
Add it to the
fedora_newservervolume group:And extend the
fedora_newserver-homevolume group to use the rest of the free space:(You may need to use it on the actual mountpoint. I assumed that it was home until you added it to your question.)
You can then see the increased space with:
Or: