On Mon, 18.05.15 15:59, Umut Tezduyar Lindskog (u...@tezduyar.com) wrote: > Hi, > > There have been few discussions about tentative state and unmounting > and I am experiencing different problem in the same device logic. > > I am at 219 + 628c89cc + 496068a8 + 5259bcf6 > > I have 2 mounts (one is bind mount) on mapper device. > > /proc/self/mountinfo: > 47 37 254:0 / /var/spool/storage/SD_DISK > rw,nosuid,nodev,noexec,noatime,nodiratime shared:18 - ext4 > /dev/mapper/mmcblk0p1 rw,journal_checksum,commit=1,data=ordered > 49 37 254:0 / /var/spool/storage/areas/SD_DISK/root > rw,nosuid,nodev,noexec,noatime,nodiratime shared:18 - ext4 > /dev/mapper/mmcblk0p1 rw,journal_checksum,commit=1,data=ordered > > systemctl -t device --all | grep map: > dev-mapper-mmcblk0p1.device loaded activating tentative > /dev/mapper/mmcblk0p1 > > As soon as I unmount the bind mount, systemd picks up the change in > /proc/self/mountinfo and changes the "tentative" device to "dead" and > due to that all file systems BindsTo to the device are being > unmounted. Application which mounted the partitions is not getting a > chance to unmount the fs. > > Should I enumerate available mount units to see if anyone else has > been mounted on the device that is about to be set as DEVICE_DEAD in > device_update_found_one()?
The right fix is to ensure you ship the right udev rules for your DM setup, so that the devices are properly announced by udev. Note that DM/LVM/... might require compile switches to be specified to enable proper udev support. The "tentative" state is nothing the system should continously leave devices in. It's a state only used for very short time windows, before udev is up, or when a pseudo device (like a loopback block device) is created and immediately mounted. If you have booted up and see a device in "tentative" state, then something is really *wrong*. Lennart -- Lennart Poettering, Red Hat _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
