On 7 December 2011 02:38, <Eric_YH_Chen@xxxxxxxxxxx> wrote: > Hi, Tommi: > > Thanks for your suggestion. > > We will try to implement a workaround solution for our internal experiment. > > I have another little question. Could I map specific image to specific device? > > For example: > Before re-boot > id pool image snap device > 0 rbd foo1 - /dev/rbd0 > 1 rbd foo3 - /dev/rbd2 > > How could I re-map the image(foo3) to device(/dev/rbd2) but skip rbd1? The command provided by ceph CLI cannot achieve this. > > If I re-map the image to another device, it would not sync with iSCSI configuration and may cause problem. > You can use the symlinks created, if memory serves they end up as something along the lines of: /dev/rbd/<poolname>/<diskname>:0 > Thanks a lot! > > > -----Original Message----- > From: Tommi Virtanen [mailto:tommi.virtanen@xxxxxxxxxxxxx] > Sent: Wednesday, December 07, 2011 3:11 AM > To: Eric YH Chen/WHQ/Wistron > Cc: ceph-devel@xxxxxxxxxxxxxxx; Chris YT Huang/WHQ/Wistron > Subject: Re: rbd device would disappear after re-boot > > On Tue, Dec 6, 2011 at 01:31, <Eric_YH_Chen@xxxxxxxxxxx> wrote: >> Another question about the rbd device. All rbd device would disappear >> after server re-boot. >> >> Do you have any plan to implement a feature that server would re-map >> all the device during initialization? >> >> If not, do you have any suggestion (about technical part) if we want >> to implement this feature? >> >> Furthermore, we would like to send a pull request after we finish it, >> any policy should we take-care? > > Yes, all mappings need to be re-established after a reboot. > > There is no convention yet on configuring what should be > re-established. Right now, putting an "rbd map" in something like > /etc/rc.local is a decent workaround. > > I created http://tracker.newdream.net/issues/1790 to track this feature. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
