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- # data=writeback
- root@debian64:~# dmesg |grep EXT4
- [ 0.299135] EXT4-fs (vda1): mounted filesystem with writeback data mode. Opts: (null)
- [ 0.516813] EXT4-fs (vda1): re-mounted. Opts: discard
- root@debian64:~# time rm -rf linux-5.10
- real 0m3.736s
- user 0m0.078s
- sys 0m0.830s
- root@debian64:~# tar xf linux-5.10.tar.xz ; sync
- root@debian64:~# mount / -oremount,nodiscard
- [ 1931.165795] EXT4-fs (vda1): re-mounted. Opts: discard,nodiscard
- root@debian64:~# time rm -rf linux-5.10
- real 0m0.424s
- user 0m0.040s
- sys 0m0.385s
- # data=ordered
- root@debian64:~# dmesg |grep EXT4
- [ 0.245088] EXT4-fs (vda1): mounted filesystem with ordered data mode. Opts: (null)
- [ 0.436585] EXT4-fs (vda1): re-mounted. Opts: discard
- root@debian64:~# tar xf linux-5.10.tar.xz ; sync
- root@debian64:~# time rm -rf linux-5.10
- real 0m0.550s
- user 0m0.061s
- sys 0m0.393s
- root@debian64:~# mount / -oremount,nodiscard
- [ 43.612304] EXT4-fs (vda1): re-mounted. Opts: discard,nodiscard
- root@debian64:~# tar xf linux-5.10.tar.xz ; sync
- root@debian64:~# time rm -rf linux-5.10
- real 0m0.451s
- user 0m0.010s
- sys 0m0.421s
- root@debian64:~#
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