fstrim-all should not be run on mdadm devices

[Timo Aaltonen]

I see that fstrim-all checks for devmapper, but I'm using mdadm and get this:

Subject: Anacron job 'cron.weekly' on eldon
From: Anacron <root@eldon>
Date: 06.02.2014 09:43
To: root@eldon

/etc/cron.weekly/fstrim:
 HDIO_DRIVE_CMD(identify) failed: Invalid argument
device /dev/md127 is not an Intel or Samsung drive

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: util-linux 2.20.1-5.1ubuntu14
ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0
Uname: Linux 3.13.0-5-generic x86_64
ApportVersion: 2.13.2-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Feb 6 09:44:42 2014
InstallationDate: Installed on 2012-11-07 (455 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: util-linux
UpgradeStatus: Upgraded to trusty on 2014-01-07 (29 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jan Groenewald (jan-aims)]

Confirmed

 [root] Cron <root@hummingbird> test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
Cron Daemon <email address hidden> 9 February 2014 06:47
To: <email address hidden>
/etc/cron.weekly/fstrim:
 HDIO_DRIVE_CMD(identify) failed: Invalid argument
device /dev/disk/by-uuid/1f50ec17-17a4-4b89-b0b4-f39e1f30dc9b is not an Intel or Samsung drive
 HDIO_DRIVE_CMD(identify) failed: Invalid argument
device /dev/md2 is not an Intel or Samsung drive
 HDIO_DRIVE_CMD(identify) failed: Invalid argument
device /dev/md1 is not an Intel or Samsung drive
 HDIO_DRIVE_CMD(identify) failed: Invalid argument
device /dev/md3 is not an Intel or Samsung drive

[Alberto Salvia Novella (es20490446e)]

Affects an essential hardware component (disk controller, built-in networking, video card, keyboard, mouse).

[Nathaniel W. Turner (nturner)]

Bug 1281202 was marked as a duplicate of this one, but please note that the scope of that issue is larger than implied by the title of this one.

[Launchpad Janitor (janitor)]

This bug was fixed in the package util-linux - 2.20.1-5.1ubuntu15

---------------
util-linux (2.20.1-5.1ubuntu15) trusty; urgency=medium

  * debian/fstrim-all: Whitelist OCZ, SanDisk, and Patriot too. (see LP
    #1259829)
  * debian/fstrim-all: Exit cleanly if hdparm got uninstalled. (LP: #1278048)
  * debian/fstrim-all: Don't print errors on mdadm devices. (LP: #1276941)
 -- Martin Pitt <email address hidden> Mon, 10 Mar 2014 13:18:58 +0100

[robi (robreg)]

Guys, sorry not to agree completely with you: fstrim-all _should_ be run on mdadm devices if they are RAID1. Linux kernel support TRIMming of RAID1 md devices since Mar 11 2012. See http://lkml.iu.edu//hypermail/linux/kernel/1203.1/01772.html
This is present in Ubuntu since kernel 3.8 (raring) and I'm using it actively on my raid1 md device made up of an Intel and a Kingston SSD. I'm trimming the / mount, which is actually on /dev/md0.
One can even mound the md device in fstab with discard option, that works too:
EXT4-fs (md0): re-mounted. Opts: discard,errors=remount-ro
Using 12.04 with kernel 3.11, and plan to upgrade to 14.04 but this is a regression now...

[chrone (chrone81)]

totally agree with robi, hope you guys don't kill support for mdraid raid1. :)

[Timo Aaltonen (tjaalton)]

there was no fstrim run by default before, so how could it be a regression?

besides, looks like only the error got silenced for mdadm devices

http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/trusty/util-linux/trusty-proposed/revision/103

[Tomasz Kontusz (tomasz-kontusz)]

Still a problem on Bionic on Hyper-V:
fstrim: /boot: FITRIM ioctl failed: Invalid argument