Hi,
I have the problem with fstrim (thin provisioning).
some details:
uname -a
Linux test.local 2.6.32-279.14.1.el6.x86_64 #1 SMP Tue Nov 6 23:43:09 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux
mount
/dev/mapper/VolGroup00-lv_root on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
/dev/md0 on /boot type ext4 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/dev/mapper/VolGroup00-lv_test1 on /mnt/test1 type ext4 (rw)
/dev/mapper/VolGroup00-lv_test2 on /mnt/test2 type ext4 (rw)
/dev/mapper/VolGroup00-lv_test5 on /mnt/test5 type xfs (rw)
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-lv_root
20G 2.3G 17G 13% /
tmpfs 1.6G 0 1.6G 0% /dev/shm
/dev/md0 99M 27M 67M 29% /boot
/dev/mapper/VolGroup00-lv_test1
40G 2.6G 35G 7% /mnt/test1
/dev/mapper/VolGroup00-lv_test2
4.0G 1.2G 2.6G 32% /mnt/test2
/dev/mapper/VolGroup00-lv_test5
3.0G 725M 2.3G 24% /mnt/test5
lvs -a -o+metadata_percent
LV VG Attr LSize Pool Origin Data%
Move Log Copy% Convert Meta%
lv_native VolGroup00 -wi-a--- 5.00g
lv_root VolGroup00 -wi-ao-- 20.00g
lv_swap VolGroup00 -wi-ao-- 4.00g
lv_test1 VolGroup00 Vwi-aotz 40.00g thin_pool 27.73
lv_test2 VolGroup00 Vwi-aotz 4.00g thin_pool 98.61
lv_test5 VolGroup00 Vwi-aotz 3.00g thin_pool 45.40
thin_pool VolGroup00 twi-a-tz 100.00g 16.40
8.47
[thin_pool_tdata] VolGroup00 Twi-aot- 100.00g
[thin_pool_tmeta] VolGroup00 ewi-aot- 100.00m
This test server (CentOS 6.3 - not install from scratch). I was updated
this server from 6.2 version:
last | tail -3
reboot system boot 2.6.32-220.el6.x Mon Jan 23 16:03 - 16:04 (00:01)
wtmp begins Mon Jan 23 16:03:26 2012
I test only ext4 fs partitions.
When I used fstrim I had next error:
fstrim /mnt/test1
fstrim: /mnt/test1: FITRIM ioctl failed: Operation not supported
I want retrieve free space from the ext4 fs to the total free space of
thin_pool after delete files on the ext4 fs (lv_test1).I will have more
free space for another thin LV.
Is it possible to get it?
Thanks in advance.
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