Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-17 Thread Jason Gress
I don't think it's the symlink that's the problem, but the path permissions being something other than open. That may be why you didn't see this. I am hoping symlinks still work, as I know we will need them for our application. Jason On 6/17/16, 1:50 AM, "ceph-users on behalf of Oliver

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-17 Thread Jason Gress
Thank you very much - we will be testing this soon. Jason On 6/16/16, 11:11 PM, "Yan, Zheng" wrote: >On Fri, Jun 17, 2016 at 5:03 AM, Jason Gress wrote: >> This is the latest default kernel with CentOS7. We also tried a newer >> kernel (from elrepo),

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-17 Thread Oliver Dzombic
Hi, just to verify this: no symlink usage == no problem/bug right ? -- Mit freundlichen Gruessen / Best regards Oliver Dzombic IP-Interactive mailto:i...@ip-interactive.de Anschrift: IP Interactive UG ( haftungsbeschraenkt ) Zum Sonnenberg 1-3 63571 Gelnhausen HRB 93402 beim Amtsgericht

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-16 Thread Yan, Zheng
On Fri, Jun 17, 2016 at 5:03 AM, Jason Gress wrote: > This is the latest default kernel with CentOS7. We also tried a newer > kernel (from elrepo), a 4.4 that has the same problem, so I don't think > that is it. Thank you for the suggestion though. > > We upgraded our

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-16 Thread Yan, Zheng
On Fri, Jun 17, 2016 at 5:18 AM, Adam Tygart wrote: > This sounds an awful lot like a a bug I've run into a few times (not > often enough to get a good backtrace out of the kernel or mds) > involving vim on a symlink to a file in another directory. It will > occasionally corrupt

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-16 Thread Adam Tygart
This sounds an awful lot like a a bug I've run into a few times (not often enough to get a good backtrace out of the kernel or mds) involving vim on a symlink to a file in another directory. It will occasionally corrupt the symlink in such a way that the symlink is unreadable. Filling dmesg with:

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-16 Thread Jason Gress
This is the latest default kernel with CentOS7. We also tried a newer kernel (from elrepo), a 4.4 that has the same problem, so I don't think that is it. Thank you for the suggestion though. We upgraded our cluster to the 10.2.2 release today, and it didn't resolve all of the issues. It's

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-15 Thread Yan, Zheng
On Thu, Jun 16, 2016 at 5:21 AM, Jason Gress wrote: > While trying to use CephFS as a clustered filesystem, we stumbled upon a > reproducible bug that is unfortunately pretty serious, as it leads to data > loss. Here is the situation: > > We have two systems, named ftp01

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-15 Thread Oliver Dzombic
Hi, i have identical setup, except that i run 10.2.2 now. I can not reproduce that. -- Mit freundlichen Gruessen / Best regards Oliver Dzombic IP-Interactive mailto:i...@ip-interactive.de Anschrift: IP Interactive UG ( haftungsbeschraenkt ) Zum Sonnenberg 1-3 63571 Gelnhausen HRB 93402

Re: [ceph-users] CephFS Bug found with CentOS 7.2

2016-06-15 Thread John Spray
On Wed, Jun 15, 2016 at 10:21 PM, Jason Gress wrote: > While trying to use CephFS as a clustered filesystem, we stumbled upon a > reproducible bug that is unfortunately pretty serious, as it leads to data > loss. Here is the situation: > > We have two systems, named ftp01

[ceph-users] CephFS Bug found with CentOS 7.2

2016-06-15 Thread Jason Gress
While trying to use CephFS as a clustered filesystem, we stumbled upon a reproducible bug that is unfortunately pretty serious, as it leads to data loss. Here is the situation: We have two systems, named ftp01 and ftp02. They are both running CentOS 7.2, with this kernel release and ceph