Re: [zfs-discuss] How do I determine dedupe effectiveness?
The commands "zpool list" and "zpool get dedup " both show a ratio of 1.10. So thanks for that answer. I'm a bit confused though if the dedup is applied per zfs filesystem, not zpool, why can I only see the dedup on a per pool basis rather than for each zfs filesystem? Seems to me there should be a way to get this information for a given zfs filesystem? Thanks again, Stacy -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] How do I determine dedupe effectiveness?
I'm trying to see if zfs dedupe is effective on our datasets, but I'm having a hard time figuring out how to measure the space saved. When I sent one backup set to the filesystem, the usage reported by "zfs list" and "zfs get used " are the expected values based on the data size. When I store a second copy, which should dedupe entirely, the zfs commands report the doubled used space that would be occupied if dedupe was turned off. My question is, are the numbers being reported by the zfs command taking into account the deduplication, or is there some other way to see how much space we're saving. Thanks, Stacy -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Exported zpool cannot be imported or deleted.
I have an exported zpool that had several drives incur errors at the same time and as a result became unusable. The pool was exported at the time the drives had problems and now I can't find a way to either delete or import the pool. I've tried relabeling the disks and using dd to write several MB of zero data to partition zero of every disk in the pool but the command "zpool import" still shows the pool as available and all drives online. When I attempt to import the pool using "zpool import -f zpool1", the system panics. Is there any way possible short of reloading the OS and completely reformatting the drives that I can get rid of this zpool? Thanks, Stacy Maydew stacy.may...@sun.com -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] How can I destroy an exported, corrupt zpool?
I have two zpools that have been exported and now have corrupted disks and cause an error when I try to import them using "zpool import -f ". Is there a way I can destroy a zpool that is exported and corrupt? Or perhaps I can remove the corrupt drives from the zpool to the point where I can import the pool? Any help would be appreciated. Thanks, Stacy Maydew stacy.may...@sun.com -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
