On Sat, Dec 5, 2015 at 7:36 PM, Loic Dachary <loic@xxxxxxxxxxx> wrote:
> Hi Ilya,
>
> ceph-disk has special handling for device names like /dev/cciss/c0d1 [1] and it was partially broken when support for device mapper was introduced. Ideally there would be a way to test that support when running the ceph-disk suite [2]. Do you know of a way to do that without having the hardware for which this driver is designed ?
>
> Maybe this convention (/dev/cciss/c0d0 being mapped to /sys/block/cciss!c0d0 is not unique to this driver and I could use another to validate the name conversion from X/Y to X!Y and vice versa is handled as it should ?
No, it's not unique. driver core does strreplace(s, '/', '!') at
register time to work around such block devices. The list includes
DAC960, aoeblk, cciss, cpqarray, sx8 and probably more, but I don't
think anything widespread uses this naming scheme. IIRC dm actually
won't let you name a device with anything that contains a slash.
If you really wanted you could set up aoeblk I guess, but a simple unit
test should be be more than enough ;)
Thanks,
Ilya
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