This commit is contained in:
parent
072d981db1
commit
5d26133bce
1 changed files with 24 additions and 0 deletions
24
doc/forum/Lots_of_4k_symlinks.mdwn
Normal file
24
doc/forum/Lots_of_4k_symlinks.mdwn
Normal file
|
@ -0,0 +1,24 @@
|
|||
Hi,
|
||||
|
||||
this is a minor issue and probably there is no better solution, but nevertheless I would like to point out it and maybe discuss a little about the issue.
|
||||
|
||||
Given that the symlinks generated by annex are pretty large in size (they point to a file named by a large hash number), ext4 is using an entire block (4K) of storage instead of [embedding the symlink into the inode][inode] itself. For the "archivist use case" of annex, this might lead to tens or hundreds of MBs of disk occupied by symlinks which actually don't add up to more than a few MBs.
|
||||
|
||||
Here is a real world example:
|
||||
|
||||
```
|
||||
(ins)carlos@carlos home$ du -hs music/
|
||||
56M music/
|
||||
(ins)carlos@carlos home$ du -bhs music/
|
||||
3.3M music/
|
||||
(ins)carlos@carlos home$ ln -s /tmp/x x
|
||||
(ins)carlos@carlos home$ du x
|
||||
0 x
|
||||
(ins)carlos@carlos home$ ln -s /tmp/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xx
|
||||
(ins)carlos@carlos home$ du xx
|
||||
4 xx
|
||||
```
|
||||
|
||||
Cheers, Carlos
|
||||
|
||||
[inode]: https://kernelnewbies.org/Linux_3.8#head-372b38979138cf2006bd0114ae97f889f67ef46a
|
Loading…
Add table
Add a link
Reference in a new issue