Becky, We will definitely be backing up the db files more frequently. Do you do anything special for your backups, or just copy the files? Would it be safer to have a file system snapshot, then copy the files for backup? If we were to attempt a recovery by falling back to slightly older copies of the bdb files, are there steps beyond setting mode to 'admin' and running pvfs2-fsck recommended? Sorry for all the questions, the docs are a little circumspect about procedures this sort of thing.
Per your other messages to the list, when we upgrade the pvfs-2.8.2 we will building against the latest Berkeley DB from Oracle. Doug At Tue, 23 Mar 2010 11:39:31 -0400 (EDT), Becky Ligon wrote: > > Doug: > > We are also running in a production mode. So, we have jobs that backup > the berkeley databases every so often. This is not ideal by any means; > the filesystem should REALLY be in a quiesced state before the backups are > taken. Until we have better redundancy in the system, this will have to > do. > > Becky > -- > Becky Ligon > PVFS Developer > Clemson University > 864-656-3865 > > > Doug Johnson wrote: > >> At Mon, 22 Mar 2010 16:22:21 -0500, > >> Phil Carns wrote: > >>> [1 <text/plain; ISO-8859-1 (7bit)>] > >>> Yeah, that's a problem. Each of those databases uses a different sort > >>> order, so you'll need to try again with a slightly different > >>> modification to BDB. I updated the documentation in trunk and attached > >>> the new version to this email. I haven't had an opportunity to test it > >>> yet, but it's a pretty simple change. > >>> > >> > >> I've tried the db_load with PINT_trove_dbpf_ds_attr_compare, > >> unfortunately the same error is encountered on startup. I also > >> attempted using '-R' with db_dump, but same result. > >> > >> We've contacted the larger users to give them a heads up, but I will > >> be creating a new file system today. I plan to keep the old > >> directories for further recovery attempts, we have a multi-day outage > >> scheduled next month and we could try some additional recovery steps > >> (plus we're upgrading to 2.8.2 at that time.) Thanks for your help > >> with this problem. > > > > Ok. Thanks for the status update, and sorry to hear that the recovery > > didn't work out better. > > > > -Phil > > > _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
