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Attach a new disk for Mastodon
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Description

The current partition where redis and pgsql are currently hasn't more space disk available.

Yet, hypervisor still has 315.1G available.

Event Timeline

dereckson created this task.Jul 11 2017, 18:10
dereckson updated the task description. (Show Details)
dereckson added a project: Servers.

I. Attach a new disk to Dwellers

Stormshear
$ cd /vmfs/volumes/53b61491-b0561938-eec8-0cc47a055d1e/Dwellers
$ vmkfstools -c 200G Mastodon.vmdk
Create: 100% done.
$ vim-cmd vmsvc/getallvms | grep Dwellers
2      Dwellers   [datastore1] Dwellers/Dwellers.vmx   centos64Guest    vmx-08                                                                                                                                                              
$ vim-cmd vmsvc/device.diskaddexisting 2 /vmfs/volumes/53b61491-b0561938-eec8-0cc47a055d1e/Dwellers/Mastodon.vmdk 0 1
Dwellers logs
Jul 11 20:36:03 dwellers.nasqueron.org kernel: vmw_pvscsi: msg type: 0x0 - MSG RING: 1/0 (5) 
Jul 11 20:36:03 dwellers.nasqueron.org kernel: vmw_pvscsi: msg: device added at scsi0:1:0
Jul 11 20:36:03 dwellers.nasqueron.org kernel: scsi 2:0:1:0: Direct-Access     VMware   Virtual disk     1.0  PQ: 0 ANSI: 2
Jul 11 20:36:03 dwellers.nasqueron.org kernel: sd 2:0:1:0: [sdb] 419430400 512-byte logical blocks: (214 GB/200 GiB)
Jul 11 20:36:03 dwellers.nasqueron.org kernel: sd 2:0:1:0: [sdb] Write Protect is off
Jul 11 20:36:03 dwellers.nasqueron.org kernel: sd 2:0:1:0: [sdb] Mode Sense: 61 00 00 00
Jul 11 20:36:03 dwellers.nasqueron.org kernel: sd 2:0:1:0: [sdb] Cache data unavailable
Jul 11 20:36:03 dwellers.nasqueron.org kernel: sd 2:0:1:0: [sdb] Assuming drive cache: write through
Jul 11 20:36:03 dwellers.nasqueron.org kernel: sd 2:0:1:0: Attached scsi generic sg2 type 0
Jul 11 20:36:03 dwellers.nasqueron.org kernel:  sdb: unknown partition table
Jul 11 20:36:03 dwellers.nasqueron.org kernel: sd 2:0:1:0: [sdb] Attached SCSI disk

II. Partition the disk

Dwellers
$ fdisk /dev/sdb
Select (default p): p
Partition number (1-4, default 1): 
First sector (2048-419430399, default 2048): 
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-419430399, default 419430399): 
Using default value 419430399
Partition 1 of type Linux and of size 200 GiB is set

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

III. Add the disk to LVM

Dwellers
$ mkdir /srv/mastodon-data
$ pvcreate /dev/sdb1
  Physical volume "/dev/sdb1" successfully created.
$ vgcreate mastodon /dev/sdb1
  Volume group "mastodon" successfully created
$ lvcreate -l 100%FREE -n mastodon_data mastodon
  Logical volume "mastodon_data" created.
$ mkfs -t xfs /dev/mastodon/mastodon_data 
meta-data=/dev/mastodon/mastodon_data isize=512    agcount=4, agsize=13106944 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0, sparse=0
data     =                       bsize=4096   blocks=52427776, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal log           bsize=4096   blocks=25599, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
$ echo "/dev/mapper/mastodon-mastodon_data /srv/mastodon-data xfs defaults 1 2" >> /etc/fstab

Current operation is to move everything to /srv/mastodon-data

Redis cache and PostgreSQL database are done, media attachments are moving (that's slow as there are a lot of small files).

Done, server restarted. /srv/mastodon-data partition uses 33 Gb.

Done, server restarted. /srv/mastodon-data partition uses 33 Gb.

dereckson closed this task as Resolved.Jul 11 2017, 20:32