On Mon, Mar 23, 2020 at 5:02 AM Eugen Block <eblock@xxxxxx> wrote: > > > To be able to mount the mirrored rbd image (without a protected snapshot): > > rbd-nbd --read-only map cluster5-rbd/vm-114-disk-1 > > --cluster backup > > > > I just need to upgrade my backup cluster? > > No, that only works with snapshots. Although I'm not sure if you can > really skip the protection. I have two Octopus lab clusters and this > procedure only works with a protected snapshot. If I try to clone the > unprotected snapshot in the remote cluster I get an error: > > remote:~ # rbd clone pool1/image1@snap1 pool2/image1 > 2020-03-23T09:55:54.813+0100 7f7cc6ffd700 -1 > librbd::image::CloneRequest: 0x558af5fb9f00 validate_parent: parent > snapshot must be protected > rbd: clone error: (22) Invalid argument Sorry, to clarify, you also need to restrict the clients to mimic or later to use RBD clone v2 in the default "auto" version selection mode: $ ceph osd set-require-min-compat-client mimic > > > Zitat von Ml Ml <mliebherr99@xxxxxxxxxxxxxx>: > > > okay, so i have ceph version 14.2.6 nautilus on my source cluster and > > ceph version 12.2.13 luminous on my backup clouster. > > > > To be able to mount the mirrored rbd image (without a protected snapshot): > > rbd-nbd --read-only map cluster5-rbd/vm-114-disk-1 > > --cluster backup > > > > I just need to upgrade my backup cluster? > > > > > > Thanks, > > Michael > > > > On Thu, Mar 19, 2020 at 1:06 PM Jason Dillaman <jdillama@xxxxxxxxxx> wrote: > >> > >> On Thu, Mar 19, 2020 at 6:19 AM Eugen Block <eblock@xxxxxx> wrote: > >> > > >> > Hi, > >> > > >> > one workaround would be to create a protected snapshot on the primary > >> > image which is also mirrored, and then clone that snapshot on the > >> > remote site. That clone can be accessed as required. > >> > >> +1. This is the correct approach. If you are using a Mimic+ cluster > >> (i.e. require OSD release >= Mimic), you can use skip the protect > >> step. > >> > >> > I'm not sure if there's a way to directly access the remote image > >> > since it's read-only. > >> > > >> > Regards, > >> > Eugen > >> > > >> > > >> > Zitat von Ml Ml <mliebherr99@xxxxxxxxxxxxxx>: > >> > > >> > > Hello, > >> > > > >> > > my goal is to back up a proxmox cluster with rbd-mirror for desaster > >> > > recovery. Promoting/Demoting, etc.. works great. > >> > > > >> > > But how can i access a single file on the mirrored cluster? I tried: > >> > > > >> > > root@ceph01:~# rbd-nbd --read-only map cluster5-rbd/vm-114-disk-1 > >> > > --cluster backup > >> > > /dev/nbd1 > >> > > > >> > > But i get: > >> > > root@ceph01:~# fdisk -l /dev/nbd1 > >> > > fdisk: cannot open /dev/nbd1: Input/output error > >> > > > >> > > dmesg shows stuff like: > >> > > [Thu Mar 19 09:29:55 2020] nbd1: unable to read partition table > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > > >> > > Here is my state: > >> > > > >> > > root@ceph01:~# rbd --cluster backup mirror pool status > >> cluster5-rbd --verbose > >> > > health: OK > >> > > images: 3 total > >> > > 3 replaying > >> > > > >> > > vm-106-disk-0: > >> > > global_id: 0bc18ee1-1749-4787-a45d-01c7e946ff06 > >> > > state: up+replaying > >> > > description: replaying, master_position=[object_number=3, tag_tid=2, > >> > > entry_tid=3], mirror_position=[object_number=3, tag_tid=2, > >> > > entry_tid=3], entries_behind_master=0 > >> > > last_update: 2020-03-19 09:29:17 > >> > > > >> > > vm-114-disk-1: > >> > > global_id: 2219ffa9-a4e0-4f89-b352-ff30b1ffe9b9 > >> > > state: up+replaying > >> > > description: replaying, master_position=[object_number=390, > >> > > tag_tid=6, entry_tid=334290], mirror_position=[object_number=382, > >> > > tag_tid=6, entry_tid=328526], entries_behind_master=5764 > >> > > last_update: 2020-03-19 09:29:17 > >> > > > >> > > vm-115-disk-0: > >> > > global_id: 2b0af493-14c1-4b10-b557-84928dc37dd1 > >> > > state: up+replaying > >> > > description: replaying, master_position=[object_number=72, > >> > > tag_tid=1, entry_tid=67796], mirror_position=[object_number=72, > >> > > tag_tid=1, entry_tid=67796], entries_behind_master=0 > >> > > last_update: 2020-03-19 09:29:17 > >> > > > >> > > More dmesg stuff: > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:29:55 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: 95 callbacks suppressed > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: I/O error, dev > >> nbd1, sector 0 > >> > > [Thu Mar 19 09:30:02 2020] buffer_io_error: 94 callbacks suppressed > >> > > [Thu Mar 19 09:30:02 2020] Buffer I/O error on dev nbd1, logical block > >> > > 0, async page read > >> > > [Thu Mar 19 09:30:02 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: I/O error, dev > >> nbd1, sector 1 > >> > > [Thu Mar 19 09:30:02 2020] Buffer I/O error on dev nbd1, logical block > >> > > 1, async page read > >> > > [Thu Mar 19 09:30:02 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: I/O error, dev > >> nbd1, sector 2 > >> > > [Thu Mar 19 09:30:02 2020] Buffer I/O error on dev nbd1, logical block > >> > > 2, async page read > >> > > [Thu Mar 19 09:30:02 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: I/O error, dev > >> nbd1, sector 3 > >> > > [Thu Mar 19 09:30:02 2020] Buffer I/O error on dev nbd1, logical block > >> > > 3, async page read > >> > > [Thu Mar 19 09:30:02 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: I/O error, dev > >> nbd1, sector 4 > >> > > [Thu Mar 19 09:30:02 2020] Buffer I/O error on dev nbd1, logical block > >> > > 4, async page read > >> > > [Thu Mar 19 09:30:02 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: I/O error, dev > >> nbd1, sector 5 > >> > > [Thu Mar 19 09:30:02 2020] Buffer I/O error on dev nbd1, logical block > >> > > 5, async page read > >> > > [Thu Mar 19 09:30:02 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: I/O error, dev > >> nbd1, sector 6 > >> > > [Thu Mar 19 09:30:02 2020] Buffer I/O error on dev nbd1, logical block > >> > > 6, async page read > >> > > [Thu Mar 19 09:30:02 2020] block nbd1: Other side returned error (30) > >> > > [Thu Mar 19 09:30:02 2020] blk_update_request: I/O error, dev > >> nbd1, sector 7 > >> > > [Thu Mar 19 09:30:02 2020] Buffer I/O error on dev nbd1, logical block > >> > > 7, async page read > >> > > > >> > > Do i have to stop the replaying or how can i mount the image on the > >> > > backup cluster? > >> > > > >> > > Thanks, > >> > > Michael > >> > > _______________________________________________ > >> > > 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 > >> > > >> > >> > >> -- > >> Jason > >> _______________________________________________ > >> 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 > -- Jason _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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