[ceph-users] CephFS client issue

2015-06-14 Thread David Z
On Monday, June 15, 2015 3:05 AM, "ceph-users-requ...@lists.ceph.com" wrote: Send ceph-users mailing list submissions to     ceph-users@lists.ceph.com To subscribe or unsubscribe via the World Wide Web, visit     http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com or, via email

Re: [ceph-users] rbd format v2 support

2015-06-08 Thread David Z
On Fri, Jun 5, 2015 at 6:47 AM, David Z wrote: > Hi Ceph folks, > > We want to use rbd format v2, but find it is not supported on kernel 3.10.0 > of centos 7: > > [ceph@ ~]$ sudo rbd map zhi_rbd_test_1 > rbd: sysfs write failed > rbd: map failed: (22) Inv

[ceph-users] rbd format v2 support

2015-06-04 Thread David Z
Hi Ceph folks, We want to use rbd format v2, but find it is not supported on kernel 3.10.0 of centos 7: [ceph@ ~]$ sudo rbd map zhi_rbd_test_1 rbd: sysfs write failed rbd: map failed: (22) Invalid argument [ceph@ ~]$ dmesg | tail [662453.664746] rbd: image zhi_rbd_test_1: unsupported

[ceph-users] The strategy of auto-restarting crashed OSD

2014-11-12 Thread David Z
Hi Guys, We are experiencing some OSD crashing issues recently, like messenger crash, some strange crash (still being investigating), etc. Those crashes seems not to reproduce after restarting OSD. So we are thinking about the strategy of auto-restarting crashed OSD for 1 or 2 times, then leav

[ceph-users] ERROR: error converting store /var/lib/ceph/osd/ceph-176: (28) No space left on device

2014-10-29 Thread David Z
Hi Guys, Recently we have encountered an XFS issue which is "no space available" on XFS although there is 15% disk space available (total space is 4TB) reported by df. This error had been seen long time before by some other users. Now we reproduce it even if using inode64 on XFS and inode size

Re: [ceph-users] erasure coding parameter's choice and performance

2014-06-21 Thread David Z
t think we can have much to do about it because the stripe width is k*w*sizeof(int) and minimal w is 8. I am just curious that if you take this into consideration and may have some future plan to reduce storage overhead. Regards, David Z On Saturday, June 21, 2014 12:22 AM, Loic Dachary wrote