I'm no programmer but if I understand [1] correctly it's an unsigned
long long:
int ImageCtx::snap_set(uint64_t in_snap_id) {
which means the max snap_id should be this:
2^64 = 18446744073709551616
Not sure if you can get your cluster to reach that limit, but I also
don't know what would happen if you actually would reach it. I also
might be misunderstanding so maybe someone with more knowledge can
confirm oder correct me.
[1] https://github.com/ceph/ceph/blob/main/src/librbd/ImageCtx.cc#L328
Zitat von Tony Liu <tonyliu0592@xxxxxxxxxxx>:
Hi,
There is a snap ID for each snapshot. How is this ID allocated, sequentially?
Did some tests, it seems this ID is per pool, starting from 4 and
always going up.
Is that correct?
What's the max of this ID?
What's going to happen when ID reaches the max, going back to start
from 4 again?
Thanks!
Tony
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