> -----Original Message----- > From: Jim Klimov [mailto:[email protected]] > Sent: 星期三, 十一月 19, 2014 15:13 > To: [email protected]; Fred Liu; [email protected] > Subject: [zfs-discuss] Re: [discuss] lively patching ZFS > > 18 ноября 2014 г. 11:20:21 CET, Fred Liu via illumos-discuss > <[email protected]> пишет: > >Sorry if it is a duplicated topic. > > > >For illumos-based OSes, patching ZFS means patching kernel. Solaris > >used to have this possibility. > >What is the current status in this aspect in illumos now? > >For ZoL, zfs is just a loadable kernel module. The lively patching zfs > >may have high possibility. > > > >In application aspect, for the ways applications own to access storage > >service vary, interruption may be incurred inevitably. > > > >Just a brainstorm. > > > >Thanks. > > > >Fred > > > > > >------------------------------------------- > >illumos-discuss > >Archives: https://www.listbox.com/member/archive/182180/=now > >RSS Feed: > >https://www.listbox.com/member/archive/rss/182180/22642773-76f3f1fc > >Modify Your Subscription: > >https://www.listbox.com/member/?&; > 3 > >cb00b08 Powered by Listbox: http://www.listbox.com > > IMHO, since changes to the zfs module can generally involve format, > caching, API, etc. changes )even if the update does not touch anything > else in the OS/kernel/libc), it makes sense that all zfs storage should > be unmounted and exported before reimporting it with new drivers. Hence > client apps/zones should be stopped (unless they rely on a vfs like nfs, > cachefs or iscsi that should make changes to storage transparent). > Likely that includes to OS if the rpool is, well, a zfs pool. And then > you have the fastreboot (if all works well) which runs a POST-less new > kernel instantly and starts up the storage and apps in an orderly > fashion.
I think it is also the guideline for "zpool|zfs upgrade" command operation even I played them on-the-fly without any issues. But ZFS is already a proven *enterprise* storage solution, we should definitely expect the minimum service outage just like NetApp/EMC. Thanks. Fred ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
