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2 results for “mehanix”

1. 

   Olivier Mehani @[email protected]

   2026-10-11

   @alangarf So, #TIL: you can't make an LVM VG into a Raid1 mirror unless you have 1 (one) free extent for the metadata.

   And I have an un-shrinkable XFS on this LV, so sucks to be me, and `rsync` it is.

   #til
2. 

   Olivier Mehani @[email protected]

   2026-10-11

   #TIL: `fallocate`(1) https://www.man7.org/linux/man-pages/man1/fallocate.1.html

   ```
   $ time fallocate -l 2G /mnt/data.img
   fallocate -l 2G /mnt/data.img 0.00s user 0.00s system 36% cpu 0.008 total
   $ ls -l /mnt/sw-data.img
   -rw-rw-r-- 1 shtrom shtrom 2147483648 Oct 11 20:59 /mnt/data.img
   ```

   Beats `dd -i/dev/zero ...`

   #linux

   #til #linux