ISILON(Powerscale) Cluster - slow restore data from snapshot folder

Question

Hello,

I have to make restore test of our VM, as I did in last year.

In last year i did:

1. I created a folder /ifs/restore

2. I go to my snap "cd /ifs/.snapshot/Sync-ssd-2023..."

3. Make a command "cp -c my VM/* /ifs/restore"

and it tooks around 8 min for restore (all VM files had in last year ~70GB)

Today I did the same (VM files are now ~100GB) but today command "cp -c" is taking around ~60min

Where I should start diagnose the issue , maybe there is faster option to restore ??

Thanks,

DELL-Sam L · Answer

Hello tedew, What is your current onefs version? Are you using PowerProtect Data Manager for your snapshots? Are you restoring to a different node?

tedew · Answer

hello,

I have OneFS 9.4.

I am using builtin methods in OneFS ( DataProtection -> SnapshotIQ ) for snapshots,replication etc.

"Are you restoring to a different node?" I'm not sure how to check this. I juts connect to my PoweScale by SSH (every time on the same IP - set as managemt)

Thanks,

DELL-Sam L · Answer

Hello tedew,

Are you restoring to a windows host or a unix host? Here is a link to the PowerScale OneFS 9.4.0.0 Web Administration Guide that shows how to find if you have more than 1 node.

https://dell.to/3BRW6oq

Phil.Lam · Answer

@tedew  is it a mixed cluster?  maybe the snapshots are in archive nodes now.

tedew · Answer

Hi,After one year I had to do the same test of restoring VMs from .snapshot :) I have the same issue - low restoring from snapshots folder to other folder. maybe I shoud use some other way to restore instead of CP - C /ifs/.snapshot/.MY_VM /ifs/resterord_Vm_test ??

DELL-Josh Cr · Answer

Hi,   Thanks for your question. What version of OneFS are you running? Is all other performance fine? Let us know if you have any additional questions.

tedew · Answer

hello, We have still OneFS 9.4 - it is isolated enviroment. Yes, reousres are fine. I might have a stupid question — does it matter if I run cp -c from inside a .snapshot directory?

DELL-Josh Cr · Answer

It should work from anywhere as long as you specify the full path. cp /ifs/.snapshot/<snapshot_name>/<directory> /ifs/<target_directory>

Are th file sizes small? It could also depend on how many snapshots it needs to go through to get the files.

Phil.Lam · Answer

@tedew , you can also synciq from shapshot to directory, uses all nodes instead of single thread cp -c.

000022672 : https://www.dell.com/support/kbdoc/en-us/000022672/onefs-how-to-recover-individual-file-s-from-snapshots-using-the-onefs-sync-iq

Isilon

ISILON(Powerscale) Cluster - slow restore data from snapshot folder

Was this post helpful?