[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [Linux-cluster] which is better gfs2 and ocfs2?



I'm using gfs2 to host KVM vm image files for a pair of clustered hosts. Am using iscsi targets for the vm data devices however as they are hosting imap spools. No stability issues or performance problems I can readily or easily attribute to the gfs2 FS in my use case.

// Thomas

On Mar 13, 2011, at 9:37 AM, yue <ooolinux 163 com> wrote:

> 1.i need gfs2 or ocfs2 to store xen-disk image file(20G--100G),it is big file. the underlying storage  is fc-san.   both of them have  cluster sence.so they fit for me.
> if gfs2 is ready for product?  anyone use gfs2 in product?  stability is the most important thing.
> 2.i have try gfs2 and ocfs2 , iozone shows , gfs2 has a good throughput when record>=512k  and file size > 4G.   
> 3.my kernel is 2.6.32 and latest.
> 
> 
> At 2011-03-13 12:48:17,"Alan Brown" <ajb2 mssl ucl ac uk> wrote:
> 
> >On 12/03/11 23:13, Bob Peterson wrote:
> >> Agreed.  We're abundantly aware of the performance problems,
> >> and we're not ignoring them.
> >
> >I know Bob, thanks.
> >
> >> (1) We recently found and fixed a problem that caused the
> >>      dlm to pass locking traffic much slower than possible.
> >
> >Is this rolled into 2.6.18-238.5.1.el5 ?
> >
> >> (2) We recently increased the speed and accuracy of fsck.gfs2
> >>      quite a bit.
> >
> >Noted and appreciated. I had cause to use them a few days ago.
> >
> >> (3) We also recently developed a patch that improves GFS2's
> >>      management of cluster locks by making hold times self-tuning.
> >>      This makes gfs2 perform much faster in many situations.
> >
> >Great
> >
> >> (4) We've recently developed another performance patch that
> >>      sped up clustered deletes (unlinks) as much as 25%.
> >
> >Good. This has been a real cow but at least for this kind of thing users 
> >simply tend to go for lunch and let it run.
> >
> >> (5) We recently identified and fixed a performance problem
> >>      related to writing large files that sped things up considerably.
> >  See question 1 :)
> >
> >Can I get hotfixes if possible? (el5.6 x64)
> >
> >AB
> >
> >
> >
> >--
> >Linux-cluster mailing list
> >Linux-cluster redhat com
> >https://www.redhat.com/mailman/listinfo/linux-cluster
> 
> 
> --
> Linux-cluster mailing list
> Linux-cluster redhat com
> https://www.redhat.com/mailman/listinfo/linux-cluster


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]