Snapshots and mmaped files.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I'm using lvm2 snapshots to do backups of several machines. (lvm2 2.00.33, device-mapper 1.01.00,
ftp://sources.redhat.com/pub/dm/patches/2.6-unstable/2.6.9/2.6.9-udm1.tar.bz2 minus patch 13) (I've tried some newer patches, without success, but that'll be a separate mail).


The problem shows up with files that contains Berkeley databases. These files seem to be modified on both the original and the snapshot. They show up in my 'var' partition with imapd, and exim, and anything else that has a berkeley database opened, and modifies the file after the snapshot is taken.

The mtime of the file is not modified, only the contents. I suspect that if one side grew, then the size change would not be affected.

Thanks,
David Brown

_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

[Index of Archives]     [Gluster Users]     [Kernel Development]     [Linux Clusters]     [Device Mapper]     [Security]     [Bugtraq]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]

  Powered by Linux