Shrinking array, every start cache throws unmountable: No pool uuid

[arghhh40k]

Got larger array disks and currently moving data off older small disks to new larger ones. After a disk is empty I stop the array and remove the drive and do a new config keeping the cache settings. I have no party at the moment. Twice now I have gotten the no UUID issue. I can manually mount the cache, copy data off and let it reformat. What is the fix here, this is the first time I have seen this behavior.

Sep 2 13:34:04 Storage kernel: BTRFS info (device md12): has skinny extents
Sep 2 13:34:05 Storage emhttpd: shcmd (2603): btrfs filesystem resize max /mnt/disk12
Sep 2 13:34:05 Storage root: Resize '/mnt/disk12' of 'max'
Sep 2 13:34:05 Storage kernel: BTRFS info (device md12): new size for /dev/md12 is 4000786976768
Sep 2 13:34:05 Storage emhttpd: shcmd (2604): mkdir -p /mnt/cache
Sep 2 13:34:06 Storage emhttpd: /mnt/cache mount error: No pool uuid
Sep 2 13:34:06 Storage emhttpd: shcmd (2605): umount /mnt/cache
Sep 2 13:34:06 Storage root: umount: /mnt/cache: not mounted.
Sep 2 13:34:06 Storage emhttpd: shcmd (2605): exit status: 32
Sep 2 13:34:06 Storage emhttpd: shcmd (2606): rmdir /mnt/cache
Sep 2 13:34:06 Storage emhttpd: shcmd (2607): sync
Sep 2 13:34:06 Storage emhttpd: shcmd (2608): mkdir /mnt/user0
Sep 2 13:34:06 Storage emhttpd: shcmd (2609): /usr/local/sbin/shfs /mnt/user0 -disks 8190 -o 

 

storage-diagnostics-20190902-2044.zip

[JorgeB]

Please post output of : 

 

blkid

 

[arghhh40k]

root@Storage:/boot/utt# blkid
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/sda: LABEL="UNRAID" UUID="6E54-85DA" TYPE="vfat"
/dev/sdc1: UUID="edd752b1-6589-44f7-9199-2a45e02e4a0d" UUID_SUB="3c51ff35-add3-45a0-8397-097047d495a7" TYPE="btrfs"
/dev/sdd1: UUID="c86d8c19-46c1-4d76-9bda-46d21721f8bb" UUID_SUB="a3cb6dcd-c9f6-42a8-a5f7-30b35edd1ee7" TYPE="btrfs"
/dev/sdk1: UUID="9e27c44a-246f-4651-aa55-11ee8b7bd7fd" UUID_SUB="a3111404-2110-4b26-ae60-214324711e5a" TYPE="btrfs" PARTUUID="143360e5-dc12-46e3-a8bf-076fd19353af"
/dev/sdl1: UUID="5301a658-9d38-411a-8fdc-2030bf632b8b" UUID_SUB="0b73e0c3-6d28-4393-8816-3c609c514857" TYPE="btrfs" PARTUUID="57264887-16ad-4fac-939a-da6a4b60a135"
/dev/sdm1: UUID="b0174dd1-02de-45cc-a62f-7156c45fd721" UUID_SUB="14db7944-3f3e-4b1a-9d45-002a7b07a2b4" TYPE="btrfs" PARTUUID="6a11795b-e79d-487a-9abf-6be94d691a98"
/dev/sdq1: UUID="0b3060f9-e98b-447e-8f2e-fc0eec2c7005" TYPE="xfs" PARTUUID="6f612d57-8d49-46e9-bc99-2acf8bc1f107"
/dev/sdn1: UUID="ae7c33cc-8e6d-445a-93ae-e0d0fa7ff272" UUID_SUB="be5247b8-2f8b-4fe3-ad59-82238602524b" TYPE="btrfs" PARTUUID="d81e346f-37f3-4619-8ff5-a856b8388119"
/dev/sdp1: UUID="9a2d9272-75fe-4292-aaad-adfb68c1d7f1" UUID_SUB="8f9c82ef-b8d0-4d55-8348-2031923f25b6" TYPE="btrfs" PARTUUID="023a392b-e06b-40ad-98b7-338dd062fe65"
/dev/sdo1: UUID="6cb7991e-ce0b-45e6-b407-00aa10f999dd" UUID_SUB="f321d54b-a852-40d2-bc7f-657fec436763" TYPE="btrfs" PARTUUID="5c9fcaf1-b799-4612-99ba-10c9b41f5b4f"
/dev/sds1: UUID="f30f805f-a050-4a9f-b7f5-8a363e1fe1e9" UUID_SUB="d990338e-6962-468f-8897-be28e5a04fde" TYPE="btrfs" PARTUUID="2cd3e71b-6e41-406e-80ec-7a0a16bd2369"
/dev/sdt1: UUID="d558f5c3-d93d-42be-ac23-747fb7341d64" UUID_SUB="2a3a8213-645c-4864-bc46-6d7354a37bce" TYPE="btrfs" PARTUUID="867df603-6b94-4625-8adb-925e45b3fd19"
/dev/sdg1: UUID="c28cd4b4-a292-456f-8999-1e770738bc42" TYPE="xfs" PARTUUID="e38c72db-2aa9-4634-87e6-bff7d66e3692"
/dev/sde1: PARTUUID="72df5ea5-6b2b-4c9b-a2e2-6bc2685c61d3"
/dev/sdu1: UUID="9d773758-3c04-4abe-8c0a-50c995e088a3" TYPE="xfs" PARTUUID="4929371a-95e4-4edc-a6ed-d59f3c0d79bf"
/dev/sdh1: UUID="48328b23-5619-473e-ae9f-1814f290d145" TYPE="xfs" PARTUUID="d0e7c5c8-7e36-43b8-8c0d-c761b35837f5"
/dev/md1: UUID="c28cd4b4-a292-456f-8999-1e770738bc42" TYPE="xfs"
/dev/md2: UUID="48328b23-5619-473e-ae9f-1814f290d145" TYPE="xfs"
/dev/md3: UUID="6cb7991e-ce0b-45e6-b407-00aa10f999dd" UUID_SUB="f321d54b-a852-40d2-bc7f-657fec436763" TYPE="btrfs"
/dev/md4: UUID="d558f5c3-d93d-42be-ac23-747fb7341d64" UUID_SUB="2a3a8213-645c-4864-bc46-6d7354a37bce" TYPE="btrfs"
/dev/md5: UUID="f30f805f-a050-4a9f-b7f5-8a363e1fe1e9" UUID_SUB="d990338e-6962-468f-8897-be28e5a04fde" TYPE="btrfs"
/dev/md6: UUID="0b3060f9-e98b-447e-8f2e-fc0eec2c7005" TYPE="xfs"
/dev/md7: UUID="9d773758-3c04-4abe-8c0a-50c995e088a3" TYPE="xfs"
/dev/md8: UUID="9e27c44a-246f-4651-aa55-11ee8b7bd7fd" UUID_SUB="a3111404-2110-4b26-ae60-214324711e5a" TYPE="btrfs"
/dev/md9: UUID="b0174dd1-02de-45cc-a62f-7156c45fd721" UUID_SUB="14db7944-3f3e-4b1a-9d45-002a7b07a2b4" TYPE="btrfs"
/dev/md10: UUID="ae7c33cc-8e6d-445a-93ae-e0d0fa7ff272" UUID_SUB="be5247b8-2f8b-4fe3-ad59-82238602524b" TYPE="btrfs"
/dev/md11: UUID="9a2d9272-75fe-4292-aaad-adfb68c1d7f1" UUID_SUB="8f9c82ef-b8d0-4d55-8348-2031923f25b6" TYPE="btrfs"
/dev/md12: UUID="5301a658-9d38-411a-8fdc-2030bf632b8b" UUID_SUB="0b73e0c3-6d28-4393-8816-3c609c514857" TYPE="btrfs"
/dev/sdi1: UUID="edd752b1-6589-44f7-9199-2a45e02e4a0d" UUID_SUB="498bb681-73a2-4c70-b1e0-de62361e423c" TYPE="btrfs"
/dev/sdj1: UUID="edd752b1-6589-44f7-9199-2a45e02e4a0d" UUID_SUB="b7ee10ae-c10a-4ca3-b92c-3486b1bbe1c5" TYPE="btrfs"
/dev/loop2: UUID="55cbcfff-fa93-46e5-9d76-35b56d8bcf0c" UUID_SUB="b0e8f202-2efb-422c-90b7-2338e162a117" TYPE="btrfs"
/dev/sdf1: PARTUUID="12af5b9b-67eb-4815-8097-6c73de1b5fe1"

 

[JorgeB]

Appears to be the same as this issue, once the cache is defined it shouldn't happen, what was the 14TB disk (currently sde) used as before? You can also try disconnecting it.

Edited September 4, 2019 by johnnie.black

[arghhh40k]

The 14TB drive is new. I installed it but left it unassigned as I was shrinking the array and didn't want cache. Once my copy is done I will swap parity and see what happens. My parity currently isn't synced.

[JorgeB]

6 hours ago, arghhh40k said:

The 14TB drive is new.

Strange that it contains some kind of partition, you can also try this:

 

wipefs -a /dev/sde1

Make sure it's still sde

[arghhh40k]

I didn't do the wipefs, but swapping cache 1 and 2 seemed to have fixed it. I have since removed more drives and consolidated to the 14tb and 8tb only.