openSUSE Forums: LUKS, btrfs, RAID1 & how does systemd mount 2 volumes with same pw?

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LUKS, btrfs, RAID1 & how does systemd mount 2 volumes with same pw? Jan 14th 2013, 02:05 hi, so i had to get a new pc and i've set up a btrfs RAID1 on 2 disks with 2 partions each wheras 1 (/home) is encrypted (same pw). my thinking was that i get asked for my password twice, each for both partions. however that is not the case. question: is the password used on both dm-crypt partitions? when yes, why? Code: # btrfs fi show Label: none  uuid: 1988bbda-a6a4-47e1-be87-852418a626cf     Total devices 2 FS bytes used 14.40GB     devid    2 size 44.53GB used 16.01GB path /dev/dm-1     devid    1 size 44.53GB used 16.03GB path /dev/dm-0 Label: none  uuid: 6c98837a-dad2-4328-9f09-cb6a77f6dd60     Total devices 2 FS bytes used 11.23GB     devid    2 size 30.00GB used 15.03GB path /dev/sdb1     devid    1 size 30.00GB used 15.04GB path /dev/sda7 Btrfs v0.19+ Code: :/dev/mapper # la total 0 drwxr-xr-x  2 root root    120 Jan 12 22:59 . drwxr-xr-x 17 root root    4540 Jan 12 22:59 .. crw-------  1 root root 10, 236 Jan 12 22:44 control lrwxrwxrwx  1 root root      7 Jan 12 22:44 cr_home1 -> ../dm-1 lrwxrwxrwx  1 root root      7 Jan 12 22:44 cr_home2 -> ../dm-0 lrwxrwxrwx  1 root root      7 Jan 12 22:59 truecrypt1 -> ../dm-2 Code: /etc/crypttab cr_home1                            /dev/disk/by-id/ata-ST3250318AS_9VYCPAY5-part8 none      none cr_home2                            /dev/disk/by-id/ata-ST380811AS_6PS2K7ME-part2 none      none Code: /etc/fstab UUID=6c98837a-dad2-4328-9f09-cb6a77f6dd60 /                    btrfs      defaults,compress=lzo,autodefrag              1 1 /dev/disk/by-id/ata-ST3250318AS_9VYCPAY5-part6 swap                swap      defaults              0 0 /dev/disk/by-id/ata-ST3250318AS_9VYCPAY5-part5 /boot                ext4      acl,user_xattr        1 2 proc                /proc                proc      defaults              0 0 sysfs                /sys                sysfs      noauto                0 0 debugfs              /sys/kernel/debug    debugfs    noauto                0 0 usbfs                /proc/bus/usb        usbfs      noauto                0 0 devpts              /dev/pts            devpts    mode=0620,gid=5      0 0 /dev/disk/by-id/ata-ST3250318AS_9VYCPAY5-part9 /tmp                ext2      acl,user_xattr        1 2 /dev/mapper/cr_home1                            /home                btrfs      nofail,defaults,device=/dev/mapper/cr_home1,device=/dev/mapper/cr_home2,autodefrag,compress=lzo                0 2 Code: #mount devtmpfs on /dev type devtmpfs (rw,relatime,size=1017840k,nr_inodes=254460,mode=755) tmpfs on /dev/shm type tmpfs (rw,relatime) tmpfs on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755) devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000) /dev/sda7 on / type btrfs (rw,relatime,compress=lzo,space_cache,autodefrag) proc on /proc type proc (rw,relatime) sysfs on /sys type sysfs (rw,relatime) tmpfs on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,relatime,mode=755) cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb) systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=30,pgrp=1,timeout=300,minproto=5,maxproto=5,direct) tmpfs on /var/lock type tmpfs (rw,nosuid,nodev,relatime,mode=755) tmpfs on /var/run type tmpfs (rw,nosuid,nodev,relatime,mode=755) hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime) securityfs on /sys/kernel/security type securityfs (rw,relatime) mqueue on /dev/mqueue type mqueue (rw,relatime) tmpfs on /media type tmpfs (rw,nosuid,nodev,noexec,relatime,mode=755) debugfs on /sys/kernel/debug type debugfs (rw,relatime) /dev/sda5 on /boot type ext4 (rw,relatime,data=ordered) /dev/sda9 on /tmp type ext2 (rw,relatime) /dev/mapper/cr_home2 on /home type btrfs (rw,relatime,compress=lzo,space_cache,autodefrag) none on /var/lib/ntp/proc type proc (ro,nosuid,nodev,relatime) fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime) gvfs-fuse-daemon on /run/user/sebastian/gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,relatime,user_id=1000,group_id=100)

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