Hi, I have a system with most of the files on one disk. Sometimes an additional storage is added by inserting another disk. There is an application included in this system to setup a disk for that additional storage. It lets a user choose any disk from the pool of not mounted drives. The system has been cloned (with dd) to many disks inserted to many machines. From time to time someone inserts an additional disk which has been previously used as the system disk. Then there are two filesystems with same UUIDs inserted to one machine. The mentioned application uses findmnt to blacklist drives with any partitions mounted. Findmnt seems to use links from /dev/disk/by-uuid. There is only one link for every UUID and it leads to the last detected disk with that UUID. It causes my application to let the user choose the mounted root filesystem. As a workaround I use /proc/self/mountinfo as it gives me major and minor numbers. My question is: is there a way to force findmnt to use major and minor numbers from /proc/self/mountinfo to identify disks/partitions? Example (using only one disk): # findmnt -cnko SOURCE /media/sdd /dev/sdd2 # cat /proc/self/mountinfo | grep sdd 31 19 8:49 / /media/sdd rw,relatime - ext4 /dev/disk/by-uuid/a1d15a89-470a-4a1e-a763-20d4b404d507 rw,user_xattr,barrier=1,data=ordered # blkid | grep sdd /dev/sdd1: UUID="a1d15a89-470a-4a1e-a763-20d4b404d507" TYPE="ext4" /dev/sdd2: UUID="a1d15a89-470a-4a1e-a763-20d4b404d507" TYPE="ext4" # ls -la /dev/sdd* brw-rw---T 1 root floppy 8, 48 Apr 23 16:13 /dev/sdd brw-rw---T 1 root floppy 8, 49 Apr 23 16:13 /dev/sdd1 brw-rw---T 1 root floppy 8, 50 Apr 23 16:20 /dev/sdd2 -- Marcin Szewczyk http://wodny.org mailto:Marcin.Szewczyk@xxxxxxxxxx <- remove b / usuń b xmpp:wodny@xxxxxxxxx xmpp:wodny@xxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe util-linux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
