M Magneto Well-Known Member Jul 30, 2017 133 4 58 44 Nov 22, 2017 #1 Hi, Does anyone know how to change the Logical Sector size of a CEPH OSD? I have searched the forums but cannot find a solution.
Hi, Does anyone know how to change the Logical Sector size of a CEPH OSD? I have searched the forums but cannot find a solution.
Alwin Proxmox Retired Staff Retired Staff Aug 1, 2017 4,616 476 88 Nov 24, 2017 #2 SilverNodashi said: Logical Sector size of a CEPH OSD Click to expand... What do you mean by that? I guess you mean the object size. You can change the object size of a RBD image on creation. http://docs.ceph.com/docs/master/man/8/rbd/
SilverNodashi said: Logical Sector size of a CEPH OSD Click to expand... What do you mean by that? I guess you mean the object size. You can change the object size of a RBD image on creation. http://docs.ceph.com/docs/master/man/8/rbd/
M Magneto Well-Known Member Jul 30, 2017 133 4 58 44 Nov 24, 2017 #3 Alwin said: What do you mean by that? I guess you mean the object size. Click to expand... https://www.ibm.com/developerworks/library/l-4kb-sector-disks/
Alwin said: What do you mean by that? I guess you mean the object size. Click to expand... https://www.ibm.com/developerworks/library/l-4kb-sector-disks/
U udo Distinguished Member Proxmox Subscriber Apr 22, 2009 5,975 196 163 Ahrensburg; Germany Nov 25, 2017 #4 SilverNodashi said: https://www.ibm.com/developerworks/library/l-4kb-sector-disks/ Click to expand... Hi, since 2011 should all new hdd have 4k sectors. I assume you don't need anything special for using this for ceph. With filestore the mount parameters are more essential for ceph. Udo
SilverNodashi said: https://www.ibm.com/developerworks/library/l-4kb-sector-disks/ Click to expand... Hi, since 2011 should all new hdd have 4k sectors. I assume you don't need anything special for using this for ceph. With filestore the mount parameters are more essential for ceph. Udo
Alwin Proxmox Retired Staff Retired Staff Aug 1, 2017 4,616 476 88 Nov 27, 2017 #5 This arch wiki has good summary on the AF. https://wiki.archlinux.org/index.php/Advanced_Format
M Magneto Well-Known Member Jul 30, 2017 133 4 58 44 Nov 27, 2017 #6 udo said: Hi, since 2011 should all new hdd have 4k sectors. I assume you don't need anything special for using this for ceph. With filestore the mount parameters are more essential for ceph. Udo Click to expand... I have seen some bad performance in the past where 512 emulation is used. Hence, I want to switch it and test to see what happens.
udo said: Hi, since 2011 should all new hdd have 4k sectors. I assume you don't need anything special for using this for ceph. With filestore the mount parameters are more essential for ceph. Udo Click to expand... I have seen some bad performance in the past where 512 emulation is used. Hence, I want to switch it and test to see what happens.