Fix #5048
krbd: limit of ~230 mapped images at once
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Description
this is just because we are using our major/minor device ids in a stupid way, iirc.
History
#1 Updated by Nathan O'Sullivan about 7 years ago
A user on IRC had a problem with iostat related to this:
- iostat
[snip]
rbd3 0.02 0.07 0.00 676 0
emcpowerig 0.02 0.07 0.00 676 0
- cat /proc/diskstats
[snip]
248 0 rbd3 169 0 1352 104 0 0 0 0 0 104 104
247 0 rbd4 169 0 1352 100 0 0 0 0 0 100 100
Both 'emcpowerig' and rbd4 were using 247:0 , resulting in iostat giving weird output. This would not have happened if RBD incremented the minor device ID instead of decrementing the major.
#2 Updated by Sage Weil about 7 years ago
- Tracker changed from Bug to Fix
#3 Updated by Sage Weil about 7 years ago
- Target version set to v0.75
#4 Updated by Sage Weil about 7 years ago
- Status changed from New to In Progress
#5 Updated by Sage Weil about 7 years ago
- Assignee set to Ilya Dryomov
#6 Updated by Sage Weil about 7 years ago
- Status changed from In Progress to Resolved