I'm setting up a server running Ubuntu Precise, and I'm trying to verify if SSD TRIM is working.
fstrim is failing:
~ sudo fstrim -v / fstrim: /: FITRIM ioctl failed: Operation not supported
So I tried wiper.sh in hdparm:
wiper-3.5 sudo ./wiper.sh --verbose --commit /dev/sda1 wiper.sh: Linux SATA SSD TRIM utility, version 3.5, by Mark Lord. rootdev=/dev/sda1 fsmode2: fsmode=read-write /: fstype=ext4 freesize = 169502088 KB, reserved = 1695020 KB Preparing for online TRIM of free space on /dev/sda1 (ext4 mounted read-write at /). This operation could silently destroy your data. Are you sure (y/N)? y Creating temporary file (167807068 KB).. Syncing disks.. Beginning TRIM operations.. get_trimlist=/sbin/hdparm --fibmap WIPER_TMPFILE.11503 /dev/sda: trimming 3211263 sectors from 64 ranges succeeded trimming 3571713 sectors from 64 ranges succeeded trimming 3915776 sectors from 64 ranges succeeded (...) trimming 3657913 sectors from 60 ranges succeeded Removing temporary file.. Syncing disks.. Done.
It seems to be working, but I'm wondering if it really is. Are there any cases where wiper.sh should work when fstrim isn't? Is there any way I can check if the TRIMing actually has succeeded (other than trusting the wiper.sh-log)?
Kernel version: Linux 3.2.0-31-generic #50-Ubuntu SMP Fri Sep 7 16:16:45 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux