Cifs mounted Datastore: Do or dont?

fuzzyduck

Member
Jul 14, 2021
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Obviously the answer is NO, but what can i expect?

Say i have this:
1. PBS installed as VM in PVE
2. Cifs mount inside PBS to other (non PVE) machine with disks attached
3. Backup PBS seperately to non-PBS location
4. Backup the rest of VM&CT to PBS

When PVE dies, and it takes PBS with it can i restore everything doing like:
1. install PVE
2. install PBS from that single regular backup
3. Mount the cifs again
4. restore all VM&CT? or is the connection PBS--->Chunks lost?
 
Last edited:

Dunuin

Famous Member
Jun 30, 2020
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Obviously the answer is NO, but what can i expect?

Say i have this:
1. PBS installed as VM in PVE
2. Cifs mount inside PBS to other (non PVE) machine with disks attached
3. Backup PBS seperately to non-PBS location
4. Backup the rest of VM&CT to PBS

When PVE dies, and it takes PBS with it can i restore everything doing like:
1. install PVE
2. install PBS from that single regular backup
3. Mount the cifs again
4. restore all VM&CT? or is the connection PBS--->Chunks lost?
Yes, that will work. But I would atleast use NFS instead of SMB. But don't expect great performance. PBS is only designed to run on local SSDs. With NFS on HDDs even a GC of 0.5TB chunks will run for over an hour using a 10Gbit NIC. Verify tasks possibly even longer.
 
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fuzzyduck

Member
Jul 14, 2021
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Is it worth the hassle of setting up this config? I have a simple vzdump task running nightly now. Does it copy/write less each backup with PBS? Or does it copy everything and does the dedup on? I have the spare room so i dont mind non-dedup
 

fuzzyduck

Member
Jul 14, 2021
56
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Think ill stick to the old method. Else its just an extra layer of complexity in my simple homelab.
 

hvisage

Active Member
May 21, 2013
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2. Cifs mount inside PBS to other (non PVE) machine with disks attached
I'd test that portion, as PBS relies on a POSIX with last access time for "touching" chunks to check which chunks can be "expired"

Rather setup a 2nd off provider/site with sync jobs pulling the backups for 2nd *copy*
 
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