On Oct 7, 2012, at 3:50 PM, Johannes Totz <johan...@jo-t.de> wrote: > On 05/10/2012 15:01, Edward Ned Harvey > (opensolarisisdeadlongliveopensolaris) wrote: >>> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >>> boun...@opensolaris.org] On Behalf Of Tiernan OToole >>> >>> I am in the process of planning a system which will have 2 ZFS >>> servers, one on site, one off site. The on site server will be >>> used by workstations and servers in house, and most of that will >>> stay in house. There will, however, be data i want backed up >>> somewhere else, which is where the offsite server comes in... This >>> server will be sitting in a Data Center and will have some storage >>> available to it (the whole server currently has 2 3Tb drives, >>> though they are not dedicated to the ZFS box, they are on VMware >>> ESXi). There is then some storage (currently 100Gb, but more can >>> be requested) of SFTP enabled backup which i plan to use for some >>> snapshots, but more on that later. >>> >>> Anyway, i want to confirm my plan and make sure i am not missing >>> anything here... >>> >>> * build server in house with storage, pools, etc... * have a >>> server in data center with enough storage for its reason, plus the >>> extra for offsite backup * have one pool set as my "offsite" >>> pool... anything in here should be backed up off site also... * >>> possibly have another set as "very offsite" which will also be >>> pushed to the SFTP server, but not sure... * give these pools out >>> via SMB/NFS/iSCSI * every 6 or so hours take a snapshot of the 2 >>> offsite pools. * do a ZFS send to the data center box * nightly, >>> on the very offsite pool, do a ZFS send to the SFTP server * if >>> anything goes wrong (my server dies, DC server dies, etc), Panic, >>> download, pray... the usual... :) >>> >>> Anyway, I want to make sure i am doing this correctly... Is there >>> anything on that list that sounds stupid or am i doing anything >>> wrong? am i missing anything? >>> >>> Also, as a follow up question, but slightly unrelated, when it >>> comes to the ZFS Send, i could use SSH to do the send, directly to >>> the machine... Or i could upload the compressed, and possibly >>> encrypted dump to the server... Which, for resume-ability and >>> speed, would be suggested? And if i where to go with an upload >>> option, any suggestions on what i should use? >> >> It is recommended, whenever possible, you should pipe the "zfs send" >> directly into a "zfs receive" on the receiving system. For two >> solid reasons: >> >> If a single bit is corrupted, the whole stream checksum is wrong and >> therefore the whole stream is rejected. So if this occurs, you want >> to detect it (in the form of one incremental failed) and then >> correct it (in the form of the next incremental succeeding). >> Whereas, if you store your streams on storage, it will go undetected, >> and everything after that point will be broken. >> >> If you need to do a restore, from a stream stored on storage, then >> your only choice is to restore the whole stream. You cannot look >> inside and just get one file. But if you had been doing send | >> receive, then you obviously can look inside the receiving filesystem >> and extract some individual specifics. >> >> If the recipient system doesn't support "zfs receive," [...] > > On that note, is there a minimal user-mode zfs thing that would allow > receiving a stream into an image file? No need for file/directory access > etc.
cat :-) > I was thinking maybe the zfs-fuse-on-linux project may have suitable bits? I'm sure most Linux distros have cat -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
