Yes, it's an issue in kernel. As dm-crypt/luks layer isn't passing TRIM to the underlying device.
/boot is not encrypted that's why it works for you. сб, 27 апр. 2019 г. в 11:11, Narcis Garcia <informat...@actiu.net>: > See in the case that /dev/sda1 (Directly mounted as Ext4 on /boot) works > with Trim/Discard. > It's the sda2_crypt (layer over sda2) that is not detected to be > trimmable. Devuan's stock kernel does. > > CentOS issue #6548 may not be this same bug; I've tested now with CentOS > 6.8 with a similar (but not same) result*:* > > $ lsb_release -d > Description: CentOS release 6.8 (Final) > > $ uname -a > Linux localhost.localdomain 2.6.32-642.el6.x86_64 #1 SMP Tue May 10 > 17:27:01 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux > > $ lsblk --discard /dev/sda > NAME DISC-ALN DISC-GRAN > DISC-MAX DISC-ZERO > sda 0 > 512B 2G 0 > ├─sda1 0 > 512B 2G 0 > └─sda2 0 > 512B 2G 0 > └─luks-f691f48b-8556-487d-ac64-50daa99ed4c9 (dm-0) 0 > 512B 2G 0 > > $ cat /etc/crypttab > luks-f691f48b-8556-487d-ac64-50daa99ed4c9 > UUID=f691f48b-8556-487d-ac64-50daa99ed4c9 none luks,discard > > $ mount | grep -e discard > /dev/mapper/luks-f691f48b-8556-487d-ac64-50daa99ed4c9 on / type ext4 > (rw,discard) > /dev/sda1 on /boot type ext4 (rw,discard) > > $ sudo fstrim /boot > # (same result as Devuan/1 and OpenVZ/6 kernel: success) > > $ sudo fstrim / > fstrim: /: FITRIM ioctl failed: Operation not supported > > > El 26/4/19 a les 21:36, spameden ha escrit: > > Hi. > > I've asked this question years ago (in 2013): > https://lists.openvz.org/pipermail/users/2013-August/005250.html > > Let me know if it helps, but this bug should have been fixed in CentOS and > RHEL at least: https://bugs.centos.org/view.php?id=6548 > > Maybe OpenVZ maintainers didn't pick up this fix in the openvz6 legacy > kernel? > > Thanks. > > ср, 10 апр. 2019 г. в 10:45, Narcis Garcia <informat...@actiu.net>: > >> Does anybody know how can I solve this? >> >> $ lsb_release -d >> Description: Devuan GNU/Linux 1.0 (jessie) >> >> $ uname -a >> Linux bell1 2.6.32-openvz-042stab134.8-amd64 #1 SMP Fri Dec 7 17:18:40 >> MSK 2018 x86_64 GNU/Linux >> >> $ lsblk --discard /dev/sda >> NAME DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO >> sda 0 512B 2G 0 >> ├─sda1 0 512B 2G 0 >> └─sda2 0 512B 2G 0 >> └─sda2_crypt 0 0B 0B 0 >> >> $ cat /etc/crypttab >> sda2_crypt UUID=***** none luks,discard >> >> $ mount | grep -e discard >> /dev/mapper/sda2_crypt on / type ext4 >> (rw,noatime,errors=remount-ro,barrier=1,data=ordered,discard) >> /dev/sda1 on /boot type ext4 (rw,relatime,barrier=1,data=ordered,discard) >> >> $ sudo fstrim / >> fstrim: /: the discard operation is not supported >> >> Thank you. >> >> >> _______________________________________________ >> Users mailing list >> Users@openvz.org >> https://lists.openvz.org/mailman/listinfo/users >> > > _______________________________________________ > Users mailing > listUsers@openvz.orghttps://lists.openvz.org/mailman/listinfo/users > > _______________________________________________ > Users mailing list > Users@openvz.org > https://lists.openvz.org/mailman/listinfo/users >
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