Thanks David, All is correct.
I must add that "backup" is just an SQL dump files set (every database is exported, format is .tar.gz). LVM is used to lock disk so we don't need to wait until bundle will be completed to execute 'UNLOCK TABLES'. Output format is tar'ed MySQL datadir. Nick 2009/8/28 cenji.neutra <[email protected]>: > > My non-expert belief is that, in the case of mysqllvm EBS storage, the > bundle is a snapshot of the EBS volume of the master (the slaves don't > use EBS - except when starting up - a volume is created from the last > snapshot and attached in order to get the MySQL data files from which > to re-start replication). > A backup, I think is just a .tar.gz file saved to S3. It is probably > the MySQL data files, but may be a .sql export (not sure - never > looked). > > In the case of LVM storage, the bundle process uses LVM to snapshot > the ephemeral volume. Not sure what form the bundle is stored in - > perhaps directly as-is to S3? (haven't tried this storage option). > > At least one slave instance must be running to use backup (not sure > about bundle), probably because it halts writing/replication so that > the snapshot is in a consistent FS state. > > My 2cents. > -David. > > > On Aug 28, 12:24 pm, mmalamud <[email protected]> wrote: >> Guys, can you briefly explain the difference between the two. Thanks. > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "scalr-discuss" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/scalr-discuss?hl=en -~----------~----~----~----~------~----~------~--~---
