On 06/01/2010 11:03, Lutz Schumann wrote:
Snapshots do not impact write performance. Deletion of the snapshots seems to be also a constant operation (time taken = number of snapshots x some time).
that's not entirely true. By having a snapshot you are not releasing the space forcing zfs to allocate new space from other parts of a disk drive. This may lead (depending on workload) to more fragmentation, less localized data (more and longer seeks).
Then the time it takes to delete a snapshot depends mostly on how many blocks needs to be freed.
-- Robert Milkowski http://milek.blogspot.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
