Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hello,
I have a drbd resource performing replication for a block device on a
pair of machines (not clustered), and it works wonderfully. Each
evening, we run a cron job that does:
drbdadm verify resourceName
Every once in a while, "verify" finds a few out-of-sync blocks, and we
manually invoke a re-synchronization when this happens. All good.
My question is: what are the sorts of things that might be causing
blocks to become out-of-sync on this resource? As far as we know, no
changes are made or fiddling done on the nodes at any time.
Again, verification and re-synchronization works fine -- I'm just
trying to get a feel for why these operations are required
occasionally.
Thank you,
Jeffrey