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.
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
