[DRBD-user] Device name change 8.4.3 to 8.4.6?

Charles Lyons - ConnetU charles at connetu.com
Sun May 3 00:17:29 CEST 2015

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Hi Roland,

Thanks for the feedback. It may well be that the original behaviour 
(keeping leading zeros) was unintended, but the fact it worked 
previously meant we stayed with it. I do notice newer docs refer to 
"DRBD also allows for user-defined block device names which must, 
however, start with drbd_" - completely custom names with an underscore 
didn't used to exist, so I wonder if when this was introduced there was 
a side-effect of stripping leading zeros from the minor introduced as well?

According to the docs I think I should be okay to keep the existing 
resource name as "drbd0061" provided I change the "device" stanza to 
read "/dev/drbd61":

Resource name: This can be any arbitrary, US-ASCII name not containing 
whitespace by which the resource is referred to.

DRBD device: This is a virtual block device managed by DRBD... The 
associated block device is usually named /dev/drbdX, where X is the 
device minor number.

Is that correct? If that's the case, I should be able to work around all 
of this completely non disruptively and make it backwards compatible in 
our scripts. If I have to change resource names as well, it becomes much 
more laborious.

Thanks for your input,

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