Hi,
On 30 July 2018 at 00:45, Pat Haley <phaley@xxxxxxx> wrote:
Hi All,
We are adding a new brick (91TB) to our existing gluster volume (328 TB). The new brick is on a new physical server and we want to make sure that we are doing this correctly (the existing volume had 2 bricks on a single physical server). Both are running glusterfs 3.7.11. The steps we've followed are
The first question we have is at what point should the additional 91 TB be visible to the client servers? Currently when we run "df -h" on any client we still only see the original 328 TB. Does the additional space only appear to the clients after the rebalance using fix-layout finishes?
- Setup glusterfs and created brick on new server mseas-data3
- Peer probe commands in order to make sure that meas-data2 and mseas-data3 are in a Trusted Storage Pool
- Added brick3 (lives on mseas-data3, is 91TB) to data-volume on mseas-data2 (328TB)
- Ran gluster volume rebalance data-volume fix-layout start cmd (fix-layout to NOT migrate data during process, we did not want to yet) Still running as of this Email
No, this should be available immediately. Do you see any error messages in the client log files when running df? Does running the command from a fresh mount succeed?
The follow-up question is how long should the rebalance using fix-layout take?
This is dependent on the number of directories on the volume.
Regards,
Nithya
Some additional information
# gluster volume info
Volume Name: data-volume
Type: Distribute
Volume ID: c162161e-2a2d-4dac-b015-f31fd89ceb18
Status: Started
Number of Bricks: 3
Transport-type: tcp
Bricks:
Brick1: mseas-data2:/mnt/brick1
Brick2: mseas-data2:/mnt/brick2
Brick3: mseas-data3:/export/sda/brick3
Options Reconfigured:
diagnostics.client-log-level: ERROR
network.inode-lru-limit: 50000
performance.md-cache-timeout: 60
performance.open-behind: off
disperse.eager-lock: off
auth.allow: *
server.allow-insecure: on
nfs.exports-auth-enable: on
diagnostics.brick-sys-log-level: WARNING
performance.readdir-ahead: on
nfs.disable: on
nfs.export-volumes: off
Thanks
-- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -=-=- Pat Haley Email: phaley@xxxxxxx Center for Ocean Engineering Phone: (617) 253-6824 Dept. of Mechanical Engineering Fax: (617) 253-8125 MIT, Room 5-213 http://web.mit.edu/phaley/www/ 77 Massachusetts Avenue Cambridge, MA 02139-4301
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