Problem running preclr - device /dev/sdf is busy

[theone]

Hi,

 

I have added a new 6TB HGST drive to my unRAID and have a problem running preclear.

 

unRAID version 6.3.5

 

* When trying to run from unassigned devices I get no response when pressing the icon.

* When trying to run from preclear under Tools menu the tool open but is stuck "Please wait... retrieving information!"

* When trying to run from command line I get the device is busy error lthough it is listed under the -l option - see below:

Linux 4.9.30-unRAID.
root@Tower:/boot/config/plugins/preclear.disk# preclear_disk.sh -v
./preclear_disk.sh version: 1.15b
root@Tower:/boot/config/plugins/preclear.disk# preclear_disk.sh -l
====================================1.15b
 Disks not assigned to the unRAID array
  (potential candidates for clearing)
========================================
     /dev/sdf = ata-HGST_HDN726060ALE614_K1JW10YD
root@Tower:/boot/config/plugins/preclear.disk# preclear_disk.sh -c 2 /dev/sdf
./preclear_disk.sh: line 1337: /root/mdcmd: No such file or directory
sfdisk: invalid option -- 'R'

Usage:
 sfdisk [options] <dev> [[-N] <part>]
 sfdisk [options] <command>

Display or manipulate a disk partition table.

Commands:
 -A, --activate <dev> [<part> ...] list or set bootable MBR partitions
 -d, --dump <dev>                  dump partition table (usable for later input)
 -J, --json <dev>                  dump partition table in JSON format
 -g, --show-geometry [<dev> ...]   list geometry of all or specified devices
 -l, --list [<dev> ...]            list partitions of each device
 -F, --list-free [<dev> ...]       list unpartitions free areas of each device
 -r, --reorder <dev>               fix partitions order (by start offset)
 -s, --show-size [<dev> ...]       list sizes of all or specified devices
 -T, --list-types                  print the recognized types (see -X)
 -V, --verify [<dev> ...]          test whether partitions seem correct
     --delete <dev> [<part> ...]   delete all or specified partitions

 --part-label <dev> <part> [<str>] print or change partition label
 --part-type <dev> <part> [<type>] print or change partition type
 --part-uuid <dev> <part> [<uuid>] print or change partition uuid
 --part-attrs <dev> <part> [<str>] print or change partition attributes

 <dev>                     device (usually disk) path
 <part>                    partition number
 <type>                    partition type, GUID for GPT, hex for MBR

Options:
 -a, --append              append partitions to existing partition table
 -b, --backup              backup partition table sectors (see -O)
     --bytes               print SIZE in bytes rather than in human readable format
     --move-data[=<typescript>] move partition data after relocation (requires -N)
 -f, --force               disable all consistency checking
     --color[=<when>]      colorize output (auto, always or never)
                             colors are enabled by default
 -N, --partno <num>        specify partition number
 -n, --no-act              do everything except write to device
     --no-reread           do not check whether the device is in use
 -O, --backup-file <path>  override default backup file name
 -o, --output <list>       output columns
 -q, --quiet               suppress extra info messages
 -w, --wipe <mode>         wipe signatures (auto, always or never)
 -X, --label <name>        specify label type (dos, gpt, ...)
 -Y, --label-nested <name> specify nested label type (dos, bsd)

 -G, --show-pt-geometry    deprecated, alias to --show-geometry
 -L, --Linux               deprecated, only for backward compatibility
 -u, --unit S              deprecated, only sector unit is supported

 -h, --help     display this help and exit
 -v, --version  output version information and exit

Available columns (for -o):
 gpt: Device Start End Sectors Size Type Type-UUID Attrs Name UUID
 dos: Device Start End Sectors Cylinders Size Type Id Attrs Boot End-C/H/S Start-C/H/S
 bsd: Slice Start End Sectors Cylinders Size Type Bsize Cpg Fsize
 sgi: Device Start End Sectors Cylinders Size Type Id Attrs
 sun: Device Start End Sectors Cylinders Size Type Id Flags

For more details see sfdisk(8).
Sorry: Device /dev/sdf is busy.: 1
root@Tower:/boot/config/plugins/preclear.disk#

 

[JorgeB]

https://forums.lime-technology.com/topic/12391-re-preclear_disksh-a-new-utility-to-burn-in-and-pre-clear-disks-for-quick-add/?do=findComment&comment=460592

 

[theone]

I though this would have been fixed by now... 

 

Would this also explain the first 2 issues as well?  (preclear button not responding and retrieving information not completing) 

[JorgeB]

Preclear script and plugin are two different things, script is not maintained for a long time and last release needs to be patched but after that it works, the plugin currently has issues and doesn't work correctly for many users.