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GeneralRe: my code is running so slow i want to get out and push. Pin
honey the codewitch11-Aug-19 2:07
memberhoney the codewitch11-Aug-19 2:07 
GeneralRe: my code is running so slow i want to get out and push. Pin
Sander Rossel11-Aug-19 2:27
professionalSander Rossel11-Aug-19 2:27 
GeneralRe: my code is running so slow i want to get out and push. Pin
honey the codewitch11-Aug-19 2:28
memberhoney the codewitch11-Aug-19 2:28 
Rantsigh, watching backup progress... Pin
lopatir10-Aug-19 9:45
memberlopatir10-Aug-19 9:45 
GeneralRe: sigh, watching backup progress... Pin
Nelek10-Aug-19 9:53
protectorNelek10-Aug-19 9:53 
GeneralRe: sigh, watching backup progress... Pin
Ron Anders10-Aug-19 12:25
memberRon Anders10-Aug-19 12:25 
GeneralRe: sigh, watching backup progress... Pin
dandy7210-Aug-19 13:23
memberdandy7210-Aug-19 13:23 
GeneralRe: sigh, watching backup progress... Pin
lopatir10-Aug-19 20:29
memberlopatir10-Aug-19 20:29 
dandy72 wrote:
owever; if a VM is merely powered up, that's enough to mark the file as changed, so that's a few dozen GBs that get added to the backup pile instantly

with virtualbox if you take a snaphot only the latest ss file get's modded.
usually after setting up a vm (o/s, required apps I'll do a double snapshot, want to roll back to clean state or/and add things to the base roll back to the first ss (and do any new "base mods" there). means even then the usually huge base: os & core apps) stays un-modded.
do regular snaps (daily/weekly/monthly depending on how much happens/matters) to keep daily backup fast and sensible. Every half dozen or so snaps merge them back into base+1 or base+2 then take another snap and carry on. (if base+1 snap starts to get too large add another layer.)

it may seem counter productive , a potential performance hit or just somehow bad to have too many snaps, but in fact not at all*. with regard to performance snaps are no different to disk file fragmentation (i.e. on zero seek time media such as SSD no impact at all.)
* the entire block allocation tables always live in the last snap so regardless how many snaps you have, and in which snap the file/block you seek is located it's a O(1) lookup.

BTW, this means any [potential] delays caused by 'having [too] many snaps' are entirely of the host o/s and it's file system. ... which is why serious VM users and almost all providers (including ms [azure]) prefer linux/BSD for VM hosts [way way better large volume/tree file systems].

merging snaps: all merging does is clean out the redundant/previous copies of the same file(s)/block(s) ==> merging snaps only optimizes space, not time, speed or performance. (unless once again a on a sucky host).

OTOH though I also do merging because it looks 'cleaner', and can also take the opportunity to put more descriptive titles on those important snapshots so they won't get so easily lost in a long long long file/snap list. (host disk space is not an issue... yet)
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modified 11-Aug-19 1:35am.

GeneralRe: sigh, watching backup progress... Pin
dandy7212-Aug-19 5:26
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GeneralRe: sigh, watching backup progress... Pin
dandy7210-Aug-19 13:18
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GeneralRe: sigh, watching backup progress... Pin
kmoorevs10-Aug-19 14:30
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GeneralRe: sigh, watching backup progress... Pin
Member 798912212-Aug-19 0:09
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General6 more days until my Birthday! Pin
Brisingr Aerowing10-Aug-19 8:07
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GeneralRe: 6 more days until my Birthday! Pin
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GeneralRe: 6 more days until my Birthday! Pin
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GeneralRe: 6 more days until my Birthday! Pin
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GeneralRe: 6 more days until my Birthday! Pin
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GeneralA friend asked me to name two structures that hold water... Pin
Mike Hankey10-Aug-19 7:28
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GeneralRe: A friend asked me to name two structures that hold water... Pin
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GeneralRe: A friend asked me to name two structures that hold water... Pin
dandy7210-Aug-19 8:09
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GeneralRe: A friend asked me to name two structures that hold water... Pin
OriginalGriff11-Aug-19 0:05
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GeneralRe: A friend asked me to name two structures that hold water... Pin
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