btrfs-balance.sh: line 27: [: !=: unary operator expected

[Massimo-B]

I see /usr/share/btrfsmaintenance/btrfs-balance.sh: line 27: [: !=: unary operator expected

sys-fs/btrfsmaintenance-0.4 on Gentoo.

# cat /etc/default/btrfsmaintenance 
## Path:        System/File systems/btrfs
## Type:        string(none,stdout,journal,syslog)
## Default:     "stdout"
#
# Output target for messages. Journal and syslog messages are tagged by the task name like
# 'btrfs-scrub' etc.
BTRFS_LOG_OUTPUT="stdout"

## Path:        System/File systems/btrfs
## Type:        string
## Default:     ""
#
# Run periodic defrag on selected paths. The files from a given path do not
# cross mount points or other subvolumes/snapshots. If you want to defragment
# nested subvolumes, all have to be listed in this variable.
# (Colon separated paths)
BTRFS_DEFRAG_PATHS="/:/mnt/btrfs-top-lvl/root/usr/portage:/mnt/btrfs-top-lvl/root/var/cache:/mnt/btrfs-top-lvl/root/var/tmp:/mnt/btrfs-top-lvl/root/var/tmp.notmpfs:/mnt/btrfs-top-lvl/root/var/lib/layman:/mnt/btrfs-top-lvl/root/usr/src:/mnt/btrfs-top-lvl/data/VirtualMachines"

## Path:           System/File systems/btrfs
## Type:           string(none,daily,weekly,monthly)
## Default:        "none"
## ServiceRestart: btrfsmaintenance-refresh
#
# Frequency of defrag.
BTRFS_DEFRAG_PERIOD="none"

## Path:        System/File systems/btrfs
## Type:        string
## Default:     "+1M"
#
# Minimal file size to consider for defragmentation
BTRFS_DEFRAG_MIN_SIZE="+1M"

## Path:        System/File systems/btrfs
## Type:        string
## Default:     "/"
#
# Which mountpoints/filesystems to balance periodically. This may reclaim unused
# portions of the filesystem and make the rest more compact.
# (Colon separated paths)
# The special word/mountpoint "auto" will evaluate all mounted btrfs filesystems at runtime
BTRFS_BALANCE_MOUNTPOINTS="/:/mnt/usb/data:/mnt/usb/mobiledata"

## Path:           System/File systems/btrfs
## Type:           string(none,daily,weekly,monthly)
## Default:        "weekly"
## ServiceRestart: btrfsmaintenance-refresh
#
# Frequency of periodic balance.
BTRFS_BALANCE_PERIOD="monthly"

## Path:        System/File systems/btrfs
## Type:        string
## Default:     "1 5 10 20 30 40 50"
#
# The usage percent for balancing data block groups.
#
# Note: default values should not disturb normal work but may not reclaim
# enough block groups. If you observe that, add higher values but beware that
# this will increase IO load on the system.
BTRFS_BALANCE_DUSAGE="1 5 10 20 30 40 50"

## Path:        System/File systems/btrfs
## Type:        string
## Default:     "1 5 10 20 30"
#
# The usage percent for balancing metadata block groups. The values are also
# used in case the filesystem has mixed blockgroups.
#
# Note: default values should not disturb normal work but may not reclaim
# enough block groups. If you observe that, add higher values but beware that
# this will increase IO load on the system.
BTRFS_BALANCE_MUSAGE="1 5 10 20 30"

## Path:        System/File systems/btrfs
## Type:        string
## Default:     "/"
#
# Which mountpoints/filesystems to scrub periodically.
# (Colon separated paths)
# The special word/mountpoint "auto" will evaluate all mounted btrfs filesystems at runtime
BTRFS_SCRUB_MOUNTPOINTS="/:/mnt/usb/data:/mnt/usb/mobiledata"

## Path:        System/File systems/btrfs
## Type:        string(none,weekly,monthly)
## Default:     "monthly"
## ServiceRestart: btrfsmaintenance-refresh
#
# Frequency of periodic scrub.
BTRFS_SCRUB_PERIOD="monthly"

## Path:        System/File systems/btrfs
## Type:        string(idle,normal)
## Default:     "idle"
#
# Priority of IO at which the scrub process will run. Idle should not degrade
# performance but may take longer to finish.
BTRFS_SCRUB_PRIORITY="idle"

## Path:        System/File systems/btrfs
## Type:        boolean
## Default:     "false"
#
# Do read-only scrub and don't try to repair anything.
BTRFS_SCRUB_READ_ONLY="false"

## Path:           System/File systems/btrfs
## Description:    Configuration for periodic fstrim
## Type:           string(none,daily,weekly,monthly)
## Default:        "none"
## ServiceRestart: btrfsmaintenance-refresh
#
# Frequency of periodic trim. Off by default so it does not collide with
# fstrim.timer . If you do not use the timer, turn it on here. The recommended
# period is 'weekly'.
BTRFS_TRIM_PERIOD="none"

## Path:        System/File systems/btrfs
## Description: Configuration for periodic fstrim - mountpoints
## Type:        string
## Default:     "/"
#
# Which mountpoints/filesystems to trim periodically.
# (Colon separated paths)
# The special word/mountpoint "auto" will evaluate all mounted btrfs filesystems at runtime
BTRFS_TRIM_MOUNTPOINTS="/:/mnt/usb/data:/mnt/usb/mobiledata"

[kdave]

This is known and fixed in master branch by #48. The next release will include the fix.

[kdave]

0.4.2 released.