So basically i need to add just more drives... ? 2017-06-23 18:09 GMT+03:00 Guenther Alka <a...@hfg-gmuend.de>:
> The fragmentation info does not describe the fragmentation of the data on > pool but the fragmentation of the free space. A high fragmentation value > will result in high data fragmentation only when you write or modify data. > > https://utcc.utoronto.ca/~cks/space/blog/solaris/ZFSZpoolFra > gmentationMeaning > So the best and only way to reduce data fragmentation is not to fill up a > pool say over 70-80%. > > You should also know that CopyOnWrite filesystems where a complete > datablock ex 128k is written newly even if you change a "house" to a > "mouse" in a textfile are more vulnerable to fragmentation than older > filesystems. This is the price for the crash resitency where a power outage > during a write cannot lead to a corrupted filesystem like with older > filesystems where it can happen that the data is modified "infile" while > the according metadata update is not happening. ZFS over-compensates this > with its advanced rambased read and write caches. A "defrag tool" is not > available for ZFS. > > Gea > > > Am 23.06.2017 um 16:13 schrieb Artyom Zhandarovsky: > >> there any way to decrease fragmentation of dr_tank ? >> > > -- > > _______________________________________________ > OmniOS-discuss mailing list > OmniOS-discuss@lists.omniti.com > http://lists.omniti.com/mailman/listinfo/omnios-discuss >
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