Difference between revisions for lvm





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102 mount /opt/dnl/ 102 mount /opt/dnl/
103 %% 103 %%
104 104
    105 == reduce ==
    106
    107 %%
    108 # df -h /opt/
    109
    110 Filesystem Size Used Avail Use% Mounted on
    111 /dev/mapper/vg_xps-lv_optfs 69G 44G 23G 66% /opt
    112
    113 %%
    114
    115
    116 The goal is to reduce from 70G to 50G
    117
    118
    119 ==== umount ====
    120
    121 %%
    122 # umount /opt/
    123 %%
    124
    125 ==== check filesystem ====
    126
    127 check a Linux ext2/ext3/ext4 file system
    128
    129 %%
    130 # e2fsck -ff /dev/mapper/vg_xps-lv_optfs
    131
    132
    133 e2fsck 1.43.9 (8-Feb-2018)
    134 Pass 1: Checking inodes, blocks, and sizes
    135 Pass 2: Checking directory structure
    136 Pass 3: Checking directory connectivity
    137 Pass 4: Checking reference counts
    138 Pass 5: Checking group summary information
    139 optfs: 117811/4587520 files (0.4% non-contiguous), 11609065/18350080 blocks
    140 %%
    141
    142 ==== resize2fs filesystem ====
    143
    144 resize2fs - ext2/ext3/ext4 file system resizer
    145
    146 %%
    147 # resize2fs /dev/mapper/vg_xps-lv_optfs 50G
    148
    149 resize2fs 1.43.9 (8-Feb-2018)
    150 Resizing the filesystem on /dev/mapper/vg_xps-lv_optfs to 13107200 (4k) blocks.
    151 The filesystem on /dev/mapper/vg_xps-lv_optfs is now 13107200 (4k) blocks long.
    152
    153 %%
    154
    155 ==== LVM reduce ====
    156
    157
    158 %%
    159 # lvreduce -L -20G /dev/mapper/vg_xps-lv_optfs
    160   WARNING: Reducing active logical volume to 50.00 GiB.
    161   THIS MAY DESTROY YOUR DATA (filesystem etc.)
    162
    163 Do you really want to reduce vg_xps/lv_optfs? [y/n]: y
    164
    165   Size of logical volume vg_xps/lv_optfs changed from 70.00 GiB (17920 extents) to 50.00 GiB (12800 extents).
    166   Logical volume vg_xps/lv_optfs successfully resized.
    167
    168 %%
    169
    170 ==== verify ====
    171
    172 %%
    173
    174 # mount /opt/
    175
    176 # df -h /opt/
    177
    178 Filesystem Size Used Avail Use% Mounted on
    179 /dev/mapper/vg_xps-lv_optfs 50G 44G 3.6G 93% /opt
    180
    181 %%
    182
105 == resize to 100% == 183 == resize to 100% ==
106 184
107 %%(bash) 185 %%(bash)
108 lvresize -l +100%FREE -n /dev/vg01/backup 186 # lvresize -l +100%FREE -n /dev/vg01/backup
109 %% 187 %%
110 188
111 189
    190 === resize xfs ===
    191
    192 ==== LVM resize ====
    193
    194 %%
    195
    196 # lvresize -l +100%FREE -n /dev/vg_xps/lv_Breach
    197
    198   Size of logical volume vg_xps/lv_Breach changed from 5.00 GiB (1280 extents) to <6.97 GiB (1784 extents).
    199   Logical volume vg_xps/lv_Breach successfully resized.
    200
    201 %%
    202
    203 ==== xfs grow ====
    204
    205
    206 %%
    207
    208 # mount /opt/Breach
    209
    210 # df -h /opt/Breach
    211
    212 Filesystem Size Used Avail Use% Mounted on
    213 /dev/mapper/vg_xps-lv_Breach 7.0G 7.0G 15M 100% /opt/Breach
    214
    215 %%
    216
    217 %%
    218
    219 # xfs_growfs /opt/Breach
    220
    221 meta-data=/dev/mapper/vg_xps-lv_Breach isize=512 agcount=6, agsize=327680 blks
    222          = sectsz=512 attr=2, projid32bit=1
    223          = crc=1 finobt=1 spinodes=0 rmapbt=0
    224          = reflink=0
    225 data = bsize=4096 blocks=1826816, imaxpct=25
    226          = sunit=0 swidth=0 blks
    227 naming =version 2 bsize=4096 ascii-ci=0 ftype=1
    228 log =internal bsize=4096 blocks=2560, version=2
    229          = sectsz=512 sunit=0 blks, lazy-count=1
    230 realtime =none extsz=4096 blocks=0, rtextents=0
    231 data blocks changed from 1826816 to 7069696
    232
    233 %%
    234
    235 %%
    236
    237 # df -h /opt/Breach
    238 Filesystem Size Used Avail Use% Mounted on
    239 /dev/mapper/vg_xps-lv_Breach 27G 7.0G 20G 26% /opt/Breach
    240
    241 %%
    242
    243