Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
/ 2004-05-31 01:50:40 +0200 \ Paolo Morandi: > Lars Ellenberg wrote: > > >/ 2004-05-30 10:03:26 +0200 > >\ Paolo Morandi: > > > >>Is my first installation of drbd. > >>I use the latest stable version of drbd: 0.6.12. > >>I have followed the howto instruction and drbd work, but have this > >>problem: > >>at any startup of drbd it go in SyncingAll status. The filesystem in > >>replication is very large (70Gb) and so, for sync, need 20h. > >>After the sync the filesystem are not mounted. > > > > > >http://www.drbd.org/drbd-article.html#when_synchronization_is_needed > > > > Lars Ellenberg > > > Thank for the answare. > I have read the article. > So: > - for shutdown the cluster i must before stopping drbd on primary node > and after shutdown the two machine (graceful shutdown): a question, but > shutting down are not executed the 'drbd stop' ? depending on your setup. most likely it is. but you may have a race, if you shutdown both at the same time. > - for mounting the filesystem i must make this manually or use datadisk > - never i can mount the filesystem on the secondary machine not "on the secondary machine", but "on *A* machine in Secondary *state*". just to explicitly point out one of the most common misunderstandings about what *you* (the administrator) think of as the primary and backup servers, and what *state* the cluster nodes are currently in... > An other question: > > are possible to increase the speed of syncronization? For syncing 73Gb > needs 20h! So is very difficult to probe the mechanism. 73G / 20h == 73*1024*1024 k / 20*3600sec == 1063 k/sec this is slooow. I have seen sync speeds of >= 50000 k/sec == 50M/sec so the answer obviously is yes. how you do this depends from your particular hardware and configuration. double check sync-max please, and whether DMA is enabled for your disks, and ... just do your homework and find your bottleneck :) Lars Ellenberg