From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Davidsen Subject: Re: large filesystem corruptions Date: Sat, 13 Mar 2010 18:45:48 -0500 Message-ID: <4B9C23AC.5010404@tmr.com> References: <4B9A9D81.3000009@edu.physics.uoc.gr> <4B9AA5AC.9090005@redhat.com> <4B9ADC61.7080007@edu.physics.uoc.gr> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4B9ADC61.7080007@edu.physics.uoc.gr> Sender: linux-raid-owner@vger.kernel.org To: Kapetanakis Giannis Cc: Ric Wheeler , linux-raid@vger.kernel.org List-Id: linux-raid.ids Kapetanakis Giannis wrote: > On 12/03/10 22:35, Ric Wheeler wrote: > >> This is probably an issue with the early version of ext4 you are using - >> note that the support for ext4 > 16TB is still gated by some work done >> up in the tools chain. >> >> Have you tried xfs? >> >> regards, >> >> Ric > > Thanks for answering, > > My filesystem would be 15 TB < 16 TB. > GFS also crashed and burned so are you sure that this > this is a problem with ext4? > Would Fedora and newer kernel be better? > > On my tests the crashing filesystem was 7TB. > When I added a second fs of 2 TB on lvm, so total > 8TB > I had the crash. > > I did a new test now and didn't use GFT partitions > but the whole physical/logical drives > > sdb - > | ---> md0 ---> LVM ---> ext4 filesystems > sdc - > > all sdb, sdc, md0 are gpt labeled without gpt partitions > inside. No crash so far but without any data written. > > Maybe the gpt partitions did the bad thing? > Can md0 use large gpt drives with no partitions? > can lvm2 use large raid device with no partition pv? I did not notice the LVM on your first post, it's far enough down that I missed it. I would be suspicious that the problem is in LVM rather than md, but if you're going for a new install soon it's probably not worth checking. If you have video issues with FC12 you may need to run the vesa driver as a quick solution. There have been learning experiences in the video drivers in recent kernels, not just Fedora. -- Bill Davidsen "We can't solve today's problems by using the same thinking we used in creating them." - Einstein