So we use man whatever to get usage and other info regarding the whatever command, when the relevant section of info is found, I'd like to quit the man command with the info left on screen. So I can type the next command with the referee above. But the man command quits the whole screen to recover the old screen similar to vim.
Is there a way to achieve this?
One of my LVM volume is shown to have 372.6% data. How could this happen? Note the volume have been re-sized down from a bigger size, but the file system seems working fine. It actually impacts the pool's free space availability. Basically, even the file system and LVN have be resized to a smaller size, the space is not freed.
The question is, how to make any unused space available for use?
# lvs
LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert
lv1 vg1 Vwi-aot--- 820.00g tp1 372.60
lv2 vg1 Vwi-aot--- 1000.00g tp1 1.60
The LVM tree structure looks like this:
# dmsetup ls --tree
vg1-tp1 (253:6)
└─vg1-tp1-tpool (253:5)
├─vg1-tp1_tmeta (253:1)
│ └─ (147:1)
├─vg1-tp1_tierdata_2 (253:4)
│ └─ (147:1)
├─vg1-tp1_tierdata_1 (253:3)
└─vg1-tp1_tierdata_0 (253:2)
ce_cachedev2 (253:11)
└─cachedev2 (253:10)
└─vg1-lv2 (253:9)
└─vg1-tp1-tpool (253:5)
├─vg1-tp1_tmeta (253:1)
│ └─ (147:1)
├─vg1-tp1_tierdata_2 (253:4)
│ └─ (147:1)
├─vg1-tp1_tierdata_1 (253:3)
└─vg1-tp1_tierdata_0 (253:2)
ce_cachedev1 (253:8)
└─cachedev1 (253:0)
└─vg1-lv1 (253:7)
└─vg1-tp1-tpool (253:5)
├─vg1-tp1_tmeta (253:1)
│ └─ (147:1)
├─vg1-tp1_tierdata_2 (253:4)
│ └─ (147:1)
├─vg1-tp1_tierdata_1 (253:3)
└─vg1-tp1_tierdata_0 (253:2)