افزایش ظرفیت LV و فایل‌سیستم XFS یا ext4 بدون unmount

همان نشست Bash روی میزبان ذخیره‌ساز مصوب

export LC_ALL=C
set -o pipefail
plan_growth() {
    mount=$1
    lv=$2
    target_gib=$3
    test -d "$mount" && test -b "$lv" || return 1
    source=$(findmnt -rn --mountpoint "$mount" -o SOURCE) || return 1
    test "$(readlink -f -- "$source")" = "$(readlink -f -- "$lv")" || return 1
    test "$(findmnt -rn --mountpoint "$mount" -o FSROOT)" = / || return 1
    fs=$(findmnt -rn --mountpoint "$mount" -o FSTYPE) || return 1
    case "$fs" in xfs|ext4) ;; *) return 1 ;; esac
    options=$(findmnt -rn --mountpoint "$mount" -o OPTIONS) || return 1
    case ",$options," in *,rw,*) ;; *) return 1 ;; esac
    devno=$(findmnt -rn --mountpoint "$mount" -o MAJ:MIN) || return 1
    mount_count=$(findmnt -rn -o MAJ:MIN | awk -v d="$devno" '$1==d {n++} END {print n+0}') || return 1
    test "$mount_count" -eq 1 || return 1
    attr=$(sudo lvs --noheadings -o lv_attr "$lv" | tr -d '[:space:]') || return 1
    case "$attr" in -w??a*) ;; *) return 1 ;; esac
    types=$(sudo lvs --segments --noheadings -o segtype "$lv" | awk 'NF {print $1}' | sort -u) || return 1
    test "$types" = linear || return 1
    vg=$(sudo lvs --noheadings -o vg_name "$lv" | tr -d '[:space:]') || return 1
    test -n "$vg" || return 1
    locktype=$(sudo vgs --noheadings -o vg_locktype "$vg" | tr -d '[:space:]') || return 1
    case "$locktype" in ''|none) ;; *) return 1 ;; esac
    vgattr=$(sudo vgs --noheadings -o vg_attr "$vg" | tr -d '[:space:]') || return 1
    case "$vgattr" in ??x*|???p*|?????[cs]*) return 1 ;; esac
    current_b=$(sudo lvs --noheadings --units b --nosuffix -o lv_size "$lv" | awk 'NF {printf "%.0f\n",$1}') || return 1
    extent_b=$(sudo vgs --noheadings --units b --nosuffix -o vg_extent_size "$vg" | awk 'NF {printf "%.0f\n",$1}') || return 1
    free_extents=$(sudo vgs --noheadings -o vg_free_count "$vg" | tr -d '[:space:]') || return 1
    case "$current_b:$extent_b:$free_extents:$target_gib" in *[!0-9:]*|:*|*::*) return 1 ;; esac
    test "$extent_b" -gt 0 && test "$target_gib" -ge 1 && test "$target_gib" -le 1024 || return 1
    test $((current_b % extent_b)) -eq 0 || return 1
    target_gib=$((10#$target_gib))
    requested_b=$((target_gib * 1024 * 1024 * 1024))
    target_extents=$(((requested_b + extent_b - 1) / extent_b))
    current_extents=$((current_b / extent_b))
    test "$target_extents" -ge "$current_extents" || return 1
    needed_extents=$((target_extents - current_extents))
    test "$free_extents" -ge "$needed_extents" || return 1
    printf 'mount=%s LV=%s filesystem=%s VG=%s\n' "$mount" "$lv" "$fs" "$vg"
    printf 'current_bytes=%s extent_bytes=%s target_extents=%s additional_extents=%s free_extents=%s\n' "$current_b" "$extent_b" "$target_extents" "$needed_extents" "$free_extents"
}
plan_growth '/srv/data' '/dev/vg_data/lv_data' '20' || {
    printf '%s\n' 'STOP: mapping, supported layout, target size or free extents did not pass.'
    exit 1
}

همان نشست Bash روی میزبان ذخیره‌ساز مصوب

plan_growth '/srv/data' '/dev/vg_data/lv_data' '20' || exit 1
record=$(sudo mktemp -d /var/tmp/academy-lvm-growth.XXXXXXXX) || exit 1
sudo vgcfgbackup --file "$record/vg-before.conf" "$vg" || exit 1
sudo lvs --segments -o lv_path,lv_uuid,lv_attr,segtype,lv_size,vg_name,devices "$lv" | sudo tee "$record/lvs-before.txt" >/dev/null || exit 1
findmnt --mountpoint "$mount" -o TARGET,SOURCE,FSTYPE,FSROOT,OPTIONS | sudo tee "$record/mount-before.txt" >/dev/null || exit 1
df -B1 -- "$mount" | sudo tee "$record/df-before.txt" >/dev/null || exit 1
printf 'Private change record: %s\n' "$record"

همان نشست Bash روی میزبان ذخیره‌ساز مصوب

plan_growth '/srv/data' '/dev/vg_data/lv_data' '20' || exit 1
if test "$needed_extents" -eq 0; then
    printf '%s\n' 'LV already has the reviewed target size; inspect the filesystem layer next.'
else
    sudo lvextend --test --extents "$target_extents" "$lv" || exit 1
fi

همان نشست Bash روی میزبان ذخیره‌ساز مصوب

plan_growth '/srv/data' '/dev/vg_data/lv_data' '20' || exit 1
if test "$needed_extents" -eq 0; then
    printf '%s\n' 'LV already has the reviewed target size; no repeated extension.'
else
    sudo lvextend --extents "$target_extents" "$lv" || exit 1
fi
sudo lvs --units b --nosuffix -o lv_path,lv_size,vg_name "$lv"
sudo blockdev --getsize64 "$lv"

همان نشست Bash روی میزبان ذخیره‌ساز مصوب

plan_growth '/srv/data' '/dev/vg_data/lv_data' '20' || exit 1
test "$needed_extents" -eq 0 && test "$fs" = xfs || exit 1
sudo xfs_growfs -d "$mount" || exit 1
sudo xfs_info "$mount"
df -B1 -- "$mount"

همان نشست Bash روی میزبان ذخیره‌ساز مصوب

plan_growth '/srv/data' '/dev/vg_data/lv_data' '20' || exit 1
test "$needed_extents" -eq 0 && test "$fs" = ext4 || exit 1
sudo resize2fs "$lv" || exit 1
df -B1 -- "$mount"