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shrink btrfs

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Zsolt Ero
2023-12-10 06:42:09 +01:00
parent 1b221a5cd3
commit 6d7f666255
4 changed files with 179 additions and 14 deletions
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docs/extract.md
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@@ -1,10 +1,10 @@
### native mapbox/mbutil
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/loop0 1,474,386,100 1,119,622,516 354,763,584 76% /data/ofm/runs/planet_20231208_091355/mnt
/dev/loop0 1,474,386,100 1,119,622,516 354,763,584 76%
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/loop0 393,216,000 269,252,174 123,963,826 69% /data/ofm/runs/planet_20231208_091355/mnt
/dev/loop0 393,216,000 269,252,174 123,963,826 69%
@@ -14,29 +14,91 @@ Filesystem Inodes IUsed IFree IUse% Mounted on
df -h mnt
Filesystem Size Used Avail Use% Mounted on
/dev/loop0 1.4T 187G 1.2T 14% /data/ofm/runs/planet_20231208_091355/mnt
/dev/loop0 1.4T 187G 1.2T 14%
df mnt
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/loop0 1474386100 195624664 1278761436 14% /data/ofm/runs/planet_20231208_091355/mnt
/dev/loop0 1474386100 195624664 1278761436 14%
df -i mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/loop0 393216000 39614466 353601534 11% /data/ofm/runs/planet_20231208_091355/mnt
/dev/loop0 393216000 39614466 353601534 11%
--- after resize2fs ext4
df -h mnt
Filesystem Size Used Avail Use% Mounted on
/dev/loop0 189G 187G 2.4G 99% /data/ofm/runs/planet_20231208_091355/mnt
/dev/loop0 189G 187G 2.4G 99%
df mnt
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/loop0 198098376 195624664 2473712 99% /data/ofm/runs/planet_20231208_091355/mnt
/dev/loop0 198098376 195624664 2473712 99%
df -i mnt
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/loop0 52854784 39614466 13240318 75% /data/ofm/runs/planet_20231208_091355/mnt
/dev/loop0 52854784 39614466 13240318 75%
### extract dedupl btrfs
note: this test uses compress-force=lzo, but it's actually uncompressible data since the PBF files are gzipped already
df -h mnt
Filesystem Size Used Avail Use% Mounted on
/dev/loop0 300G 97G 204G 33%
df mnt
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/loop0 314572800 100925972 213428604 33%
btrfs filesystem df mnt
Data, single: total=48.01GiB, used=47.45GiB
System, single: total=4.00MiB, used=16.00KiB
Metadata, single: total=49.01GiB, used=48.32GiB
GlobalReserve, single: total=496.86MiB, used=0.00B
btrfs filesystem du -s mnt
Total Exclusive Set shared Filename
47.45GiB 47.45GiB 0.00B mnt
sudo btrfs filesystem show mnt
Label: none uuid: ce7615d1-0ee5-460b-bdb0-7c4d214eecc4
Total devices 1 FS bytes used 95.76GiB
devid 1 size 300.00GiB used 97.02GiB path /dev/loop0
sudo btrfs filesystem usage mnt
Overall:
Device size: 300.00GiB
Device allocated: 97.02GiB
Device unallocated: 202.98GiB
Device missing: 0.00B
Used: 95.76GiB
Free (estimated): 203.54GiB (min: 203.54GiB)
Free (statfs, df): 203.54GiB
Data ratio: 1.00
Metadata ratio: 1.00
Global reserve: 501.22MiB (used: 0.00B)
Multiple profiles: no
Data,single: Size:48.01GiB, Used:47.45GiB (98.83%)
/dev/loop0 48.01GiB
Metadata,single: Size:49.01GiB, Used:48.32GiB (98.60%)
/dev/loop0 49.01GiB
System,single: Size:4.00MiB, Used:16.00KiB (0.39%)
/dev/loop0 4.00MiB
Unallocated:
/dev/loop0 202.98GiB
compsize -x mnt
Processed 44249086 files, 3458702 regular extents (3800454 refs), 40448654 inline.
Type Perc Disk Usage Uncompressed Referenced
TOTAL 99% 74G 74G 80G
none 100% 74G 74G 80G
lzo 20% 4.0K 20K 20K