block/rnbd-clt: support mapping two devices with the same name from different servers
Previously, we can't map same device name from different sessions due to the limitation of sysfs naming mechanism. root@clt2:~# ls -l /sys/class/rnbd-client/ctl/devices/ total 0 lrwxrwxrwx 1 root 0 Sep 2 16:31 !dev!nullb1 -> ../../../block/rnbd0 We only use the device name in above, which caused device with the same name can't be mapped from another server. To address the issue, the sessname is appended to the node to differentiate where the device comes from. Also, we need to check if the pathname is existed in a specific session instead of search it in global sess_list. Signed-off-by:Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by:
Gioh Kim <gi-oh.kim@cloud.ionos.com> Signed-off-by:
Jack Wang <jinpu.wang@cloud.ionos.com> Reviewed-by:
Md Haris Iqbal <haris.iqbal@cloud.ionos.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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