issues with shared folders' device id listed as n/a

  • TLDR & the issue: physically swapped a 1Tb hard drive (label data3) in my machine running omv for a 4Tb (label data4). ever since getting tons of errors in web gui about how it cant find data3 and was repeatedly unable to delete data3 as a filesystem even tho it was unmounted and not connected. as part of trying to resolve that issue, i deleted my unionFS data pool (that all my currently referenced shared folders point to) and am unable to add/edit/delete any shared folders to resolve the issue, even after making shared folders unreferenced.


    i suspect i have solved my original issue of my machine yelling at me that it cant find disk-by-label/data3 by editing the config.xml file; additionally i have been successful in deleteing the data3 file system in the GUI, but I'm still having lots of issues with my shared folders' devices' showing up as "n/a"


    any pointers or things to check next would be greatly appreciated!


    also - is there a way to change the device of a shared folder in the config.xml directly? i tried to do so but either missed something or the config doesn't actually do what i had surmised.


    the following are what this machine has as far as drives:


    data1
    data2
    data3 = 1Tb disk physically swapped with data4
    data4 = new 4Tb disk physically swapped with data3
    parity1
    dataPool = original unionFS data pool deleted as part of troubleshooting below.
    hot_tub1 = unionFS data pool recreated in troubleshooting below


    all shared folders are pointed to the *now deleted* dataPool "device"


    troubleshooting done:

    > file system shows a disk-by-label that is unable to be deleted.
    > verified that no shared folders were using it
    > restarted the machine
    > tried to delete dataPool, the original unionfs, that i had previously edited from data3 to data4
    > now getting errors trying to build any new unionfs


    > uninstalled & reinstalled unionFS, still getting the same error
    > also had installed reset permissions plugin and verified there nothing in use
    > all of my shared folders show "n/a" under devices

    > removed all four shared folders from apple filing (media, downloads, personal & timemachine-optiplex)
    > went into shared folders, and tried to delete shared folder (NOT shared + content)
    > was able to click thru the gui window to do so, but when clicking apply get this error:

    > one forum post indicated they fixed it by editing /etc/openmediavault/config.xml
    > found a section listing disks by UUID
    > found this section referencing disk-by-label

    Code
    <mntent>
            <uuid>9302b78b-d3bc-4bea-b6b1-2cf8336d5db1</uuid>
            <fsname>/dev/disk/by-label/data3</fsname>
            <dir>/srv/dev-disk-by-label-data3</dir>
            <type>ext4</type>
            <opts>defaults,nofail,user_xattr,noexec,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl</opts>
            <freq>0</freq>
            <passno>2</passno>
            <hidden>0</hidden>
          </mntent>

    > deleted this in config.xml after making backup config.xml.bak
    > web interface errored and had me sign in again
    > after signing back in Storage > File Systems > Devices still was listing /dev/disk/by-label/data3
    > deleted it again, applied change successfully!
    > went into unionFS and tried to add a new pool (hot_tub1) with data1, data2, and data4 - applied successfully!!
    > shared folders dont look like they will let me edit location

  • continuing since original post was too verbose:


    > possibly thru config.xml too?
    > looking under the "shares" section of the config.xml appears to be a <mntentref>5a499066-8eac-4b77-8bda-1ae3e04bb31a</mntentref>
    > this looks like it references the /srv/ location

    Code
    root@theLibrary:/# ls /srv/
        63bc36da-cd70-4f55-a65e-e2f961f8c6f1 dev-disk-by-label-data2 dev-disk-by-label-parity1 ftp
        c88db91e-1e48-4eab-910d-65965fc98d43 dev-disk-by-label-data4 dev-disk-by-label-tera
        dev-disk-by-label-data1 dev-disk-by-label-disk1 f17aba77-84cb-444e-81d0-8646a71b1085

    > but which of these is the correct data pool? maybe config.xml will tell us
    > looking near the end under what appears to be the plugins section found


    > hazarding a guess that 63bc36da-cd70-4f55-a65e-e2f961f8c6f1 is the main identity of hot_tub1 (my newly data pool name)
    > verified 63bc36da is indeed hot_tub1 in web gui
    > only going change this location ID for the unreferenced shared folder first as a test
    > not sure how would behave for mounted ones?
    > changing the config file for shared folder "downloads"


    <mntentref>5a499066-8eac-4b77-8bda-1ae3e04bb31a</mntentref>
    to
    <mntentref>63bc36da-cd70-4f55-a65e-e2f961f8c6f1</mntentref>


    > also added a comment in the line above mntentref
    > reloaded web gui - comment showing up but device still n/a
    > another check of the config.xml does still show the mntentref for downloads is 63bc36da
    > might have to delete and readd the folder via web gui
    > when i click edit or delete on the shared folder in Access Rights Management > Shared Folders it errors as follow

    > so it seems whatever is going on, unionfilesystem doesnt play nice with c88db91e-1e48-4eab-910d-65965fc98d43
    > c88db91e is not found anywhere in config.xml
    > via SSH shell, using blkid to check for c88db91e there - no dice
    > tried to delete shared folder "downloads" anyway despite errors - clicking apply generates this

    > rebooting the system, still getting the error directly above
    > error occurs when trying to add, edit, or remove a shared folder



    Thank you in advance for any feedback or advice!!!

  • another update: after reading this thread stating not to use /sharedfolder/blah in any docker setups - i have edited all my containers to point to /srv/63bc36da-cd70-4f55-a65e-e2f961f8c6f1/ instead.



    however still getting this error when trying to add/edit/delete any shared folders. besides docker, AFP & SMB are the only other services that i have configured to use shared folders

    • Offizieller Beitrag

    <mntentref>5a499066-8eac-4b77-8bda-1ae3e04bb31a</mntentref>
    to
    <mntentref>63bc36da-cd70-4f55-a65e-e2f961f8c6f1</mntentref>

    This could be way beyond my pay grade :) but the above is incorrect, this is from my own .xml for unionfs

    This is the sharedfolder reference


    hopefully this will clarify that part.


    Whilst you were correct to make a backup of the xml file this


    OMV\Config\DatabaseException: Failed to execute XPath query '//system/fstab/mntent[uuid='5a499066-8eac-4b77-8bda-1ae3e04bb31a']'. in /usr/share/php/openmediavault/config/database.inc:78

    would suggest that fstab requires updating, which if you make changes like you have I believe it does. So change the config then run omv-mkconf fstab you may also need to reboot for the change to take effect.

  • This could be way beyond my pay grade :) but the above is incorrect, this is from my own .xml for unionfs
    This is the sharedfolder reference


    hopefully this will clarify that part.


    this worked a treat - good catch on this! it seems that i had wrongly mistaken that the shared folders reference the uuid of the unionFS, when they do definitely reference the unionFS's self-mntent.


    for completeness and anyone searching this thread later, here is what i did:


    > the sharedfolder mntent requires the self-mntent listed in the unionFS section NOT the mntent (which is what i had done)

    <unionfilesystems>
    <filesystem>
    <uuid>63bc36da-cd70-4f55-a65e-e2f961f8c6f1</uuid>
    <name>hot_tub1</name>
    <self-mntentref>7c51dcd4-542e-4410-af3f-f8a68255e2db</self-mntentref>


    > i had previously changed the shared folder's mntent to 63bc6da when it by this logic it needs to be 7c51dcd4
    > root@theLibrary:/etc/openmediavault# cp config.xml /sharedfolders/personal/config.xml.bak
    > editing the "downloads" folder once more to the unionFS self-mntent, changed


    <mntentref>63bc36da-cd70-4f55-a65e-e2f961f8c6f1</mntentref>
    to
    <mntentref>7c51dcd4-542e-4410-af3f-f8a68255e2db</mntentref>



    > reloaded the web gui and it worked!!!! "downloads" shared folder now shows to reference "hot_tub1"
    > doing the same for the other unreferenced folder "timemachine-optiplex" - success!
    > deleted SMB and NFS references to shared folders "media" & "personal" and repeating the process
    > typoed something because the web gui gives an error 709 (or 907) on every page
    > rolled back to prior backup config.xml.bak and redid "downloads & timemachine-optiplex"
    > again, removed SMB & NFS references so "media" & "personal" are now unreferenced
    > root@theLibrary:/etc/openmediavault# cp config.xml /sharedfolders/personal/config.xml.bak2
    > corrected all shared folders and now all reference the current unionFS datapool
    > further tests reveal zero errors when adding, editing, and removing shared folders



    whew! on the upside, i've learned quite a bit how omv is setup via the config.xml file.


    thank you thank you thank you @geaves for helping me out! merely correcting my prior mistake in the config.xml was all that was needed - i didn't need to run omv-mkconf fstab nor reboot for things to start working correctly again.

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