Can mount btrfs file system, cannot unmount

clickwir · 9. November 2017

I have 4 disks that are a btrfs RAID10. OMV sees them and can mount them. I can view the contents via the cli and see all the content that's already on there.

Tried to create an NFS share and got an error that it looks like it's trying to remount the same devices. So I'm trying to unmount under File System and get the following error.

Code

The XPath query '//system/fstab/mntent[((((fsname='/dev/sdd' or fsname='/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_drive-scsi2') or fsname='/dev/disk/by-path/pci-0000:00:05.0-scsi-0:0:0:2') or fsname='/dev/disk/by-uuid/b170f3a5-1122-4c65-be6f-f15338514846') or fsname='b170f3a5-1122-4c65-be6f-f15338514846')]' does not return the requested number of 1 object(s).


Error #0:
exception 'OMV\Config\DatabaseException' with message 'The XPath query '//system/fstab/mntent[((((fsname='/dev/sdd' or fsname='/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_drive-scsi2') or fsname='/dev/disk/by-path/pci-0000:00:05.0-scsi-0:0:0:2') or fsname='/dev/disk/by-uuid/b170f3a5-1122-4c65-be6f-f15338514846') or fsname='b170f3a5-1122-4c65-be6f-f15338514846')]' does not return the requested number of 1 object(s).' in /usr/share/php/openmediavault/config/database.inc:172
Stack trace:
#0 /usr/share/openmediavault/engined/rpc/filesystemmgmt.inc(952): OMV\Config\Database->getByFilter('conf.system.fil...', Array, 1)
#1 [internal function]: OMVRpcServiceFileSystemMgmt->umount(Array, Array)
#2 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)
#3 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('umount', Array, Array)
#4 /usr/sbin/omv-engined(536): OMV\Rpc\Rpc::call('FileSystemMgmt', 'umount', Array, Array, 1)
#5 {main}

Alles anzeigen

Mount shows it's still mounted

/dev/sdd on /srv/dev-disk-by-id-scsi-0QEMU_QEMU_HARDDISK_drive-scsi4 type btrfs (rw,relatime,space_cache,subvolid=5,subvol=/)

Can someone explain what OMV is trying to do here and why it might be failing?

subzero79 · 9. November 2017

Something is failing. This is probably to the multi device btrfs. I saw a commit last week regarding double view of grouped btrfs devices. Are you on latest omv4?

votdev · 9. November 2017

The error message indicates that there are more than one moint points for this device which is WRONG. You need to modify the database manually to fix that.

clickwir · 10. November 2017

Yes I'm up to date. I just installed the 3.0.86 iso and updated to 4 yesterday.

Shows 4.0.9-1

It kind of looks like it is multiple mount points. I did a Mount for the File System, added 1 shared folder and 1 NFS share.

Code

root@nas:~# mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=2010368k,nr_inodes=502592,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=405088k,mode=755)
/dev/sda1 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=36,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=10445)
mqueue on /dev/mqueue type mqueue (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
nfsd on /proc/fs/nfsd type nfsd (rw,relatime)
tmpfs on /tmp type tmpfs (rw,relatime)
/dev/sdd on /sharedfolders/asdf type btrfs (rw,relatime,space_cache,subvolid=5,subvol=/asdf)
/dev/sdd on /srv/dev-disk-by-id-scsi-0QEMU_QEMU_HARDDISK_drive-scsi4 type btrfs (rw,relatime,space_cache,subvolid=5,subvol=/)
/dev/sdd on /export/asdf type btrfs (rw,relatime,space_cache,subvolid=5,subvol=/asdf)

Alles anzeigen

I was getting an error when trying to make the NFS share. It looked like it was trying to remount what was already mounted. So I manually umount from CLI, then Applied the NFS config and it worked without error.

clickwir · 23. November 2017

Zitat von votdev

The error message indicates that there are more than one moint points for this device which is WRONG. You need to modify the database manually to fix that.

Where is the db? Sorry, not done that before.

votdev · 23. November 2017

/etc/openmediavault/config.xml

clickwir · 23. Januar 2018

So poking around in there I see 3 things referencing the filesystem in question.

Not sure what I should do with them though.

Code: config.xml

<mntent>
        <uuid>cc425a4c-2faa-4294-8f9a-e1cef0d26c51</uuid>
        <fsname>/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_drive-scsi4</fsname>
        <dir>/srv/dev-disk-by-id-scsi-0QEMU_QEMU_HARDDISK_drive-scsi4</dir>
        <type>btrfs</type>
        <opts>defaults,nofail</opts>
        <freq>0</freq>
        <passno>2</passno>
        <hidden>0</hidden>
      </mntent>
      <mntent>
        <uuid>fd489af3-e460-488f-99df-a1696fe712a3</uuid>
        <fsname>/srv/dev-disk-by-id-scsi-0QEMU_QEMU_HARDDISK_drive-scsi4/Data</fsname>
        <dir>/export/Data</dir>
        <type>none</type>
        <opts>bind,nofail</opts>
        <freq>0</freq>
        <passno>0</passno>
        <hidden>0</hidden>
      </mntent>
      <mntent>
        <uuid>8ce35c05-b4d3-4a54-9b0c-8cf24878feb4</uuid>
        <fsname>/srv/dev-disk-by-id-scsi-0QEMU_QEMU_HARDDISK_drive-scsi4/utilities</fsname>
        <dir>/export/utilities</dir>
        <type>none</type>
        <opts>bind,nofail</opts>
        <freq>0</freq>
        <passno>0</passno>
        <hidden>0</hidden>
      </mntent>

Alles anzeigen

Jetzt mitmachen!