Thanks Ilya. Is there a more deterministic way to know where the volumes are mapped to? Thanks, Shridhar On Wed, 8 Apr 2020 at 03:06, Ilya Dryomov <idryomov@xxxxxxxxx> wrote: > A note of caution, though. "rbd status" just lists watches on the > image header object and a watch is not a reliable indicator of whether > the image is mapped somewhere or not. > > It is true that all read-write mappings establish a watch, but it can > come and go due to network partitions, OSD crashes or general cluster > issues. When the client notices that it lost a watch, it attempts to > reestablish it, but this doesn't happen immediately. > > Thanks, > > Ilya > > On Tue, Apr 7, 2020 at 8:12 PM Void Star Nill <void.star.nill@xxxxxxxxx> > wrote: > > > > Thanks Jack. Exactly what I needed. > > > > Appreciate quick response. > > > > Regards, > > Shridhar > > > > > > On Tue, 7 Apr 2020 at 10:00, Jack <ceph@xxxxxxxxxxxxxx> wrote: > > > > > Hi, > > > > > > Checkout rbd status <image> > > > For instance: > > > root@ceph5-1:~# rbd status vm-903-disk-1 > > > Watchers: > > > watcher=10.5.0.39:0/866486904 client.522682726 > > > cookie=140177351959424 > > > > > > This is the list of clients for that image > > > All mapping hosts are in it > > > > > > > > > On 4/7/20 6:46 PM, Void Star Nill wrote: > > > > Hello, > > > > > > > > Is there a way to find out all the clients where the volumes are > mapped > > > > from a central point? > > > > > > > > We have a large fleet of machines that use ceph rbd volumes. For some > > > > maintenance purposes, we need to find out if a volume is mapped > anywhere > > > > before acting on it. Right now we go and query each client machines > with > > > > `rbd showmapped` commands. Is there a variant of this CLI that lists > all > > > > mappings on a single node (ceph mon for instance)? > > > > > > > > Thanks, > > > > Shridhar > > > > _______________________________________________ > > > > ceph-users mailing list -- ceph-users@xxxxxxx > > > > To unsubscribe send an email to ceph-users-leave@xxxxxxx > > > > > > > _______________________________________________ > > > ceph-users mailing list -- ceph-users@xxxxxxx > > > To unsubscribe send an email to ceph-users-leave@xxxxxxx > > > > > _______________________________________________ > > ceph-users mailing list -- ceph-users@xxxxxxx > > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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