good idea! thanks! sz_cuitao@163.com From: Eugen Block Date: 2020-04-06 17:44 To: ceph-users Subject: [ceph-users] Re: Can I fix the devive name,when using image map? Hi, you can use the pool/image names to access your rbd image: ceph:~ # rbd showmapped id pool namespace image snap device 0 cinder image1 - /dev/rbd0 ceph:~ # ls -l /dev/rbd/cinder/image1 lrwxrwxrwx 1 root root 10 6. Apr 11:39 /dev/rbd/cinder/image1 -> ../../rbd0 I'm not aware of an option to change the device name. Regards, Eugen Zitat von sz_cuitao@163.com:

Hi:

I use image map to mount a ceph device to localhost,but I found that,the device name I can not control. This is a problem,when it's name changed,the FS on it or the database using this device may get wrongs. Can I control the device name?

For exapme:

[root@gate2 ~]# rbd showmapped id pool namespace image snap device 0 testpool test_img - /dev/rbd0

Can I map the device like this,just directly give the deveice name?like this:

rbd map testpool/test_img /dev/rbd0

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