Thanks, guys, for your work. The only release still affected by this
bug is precise which will be EOL by the end of this month. It's time to
move on. Closing as obsolete.
** Changed in: linux (Ubuntu)
Status: Triaged => Invalid
** Changed in: linux (Ubuntu)
Status: Invalid => Fix Released
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https://bugs.launchpad.net/bugs/1063791
Title:
ubuntu kernels < 3.7 do not include DISCARD/TRIM (FITRIM ioctl) for
JFS filesystem
Status in linux package in Ubuntu:
Fix Released
Bug description:
I backported the (now uptream since linux 3.7) patch to add DISCARD/TRIM to
JFS filesystem from
https://lkml.org/lkml/2012/10/3/250 to ubuntu kernel < 3.7. It contains two
other minor fixes, too.
It's quite straightforward, the only change is to exclude one line (a
call to dquot_writeback_dquots() in fs/jfs/super.c) that otherwise
would pull in endless dependencies to newly added blkdev and quota
functions and macros.
The patched 3.2 kernel (ubuntu generic 3.2.0-31.50, +JFS TRIM + LZO
instead of GZIP, no other changes) is up and running on a SSD,
'fstrim' command works and also mount option 'discard'.
With the stock ubuntu 3.2 generic kernel on a SSD and JFS, I had two
crashes, both inside JFS kernel code, one was catched (AppArmor?)
leaving me with r/o filesystem and the other could not recover. Other
than that, I experienced bad interactive performance since I installed
the SSD. These have become slightly better with the patch added, but
interactivity is still worse than with a rotational HD, e.g. when
opening a menu. Will now investigate if running a low latency kernel
fixes that.
The patch is appended, the Ubuntu KernelGitGuide says clone stock linux from
kernel.ubuntu.com, but
https://wiki.ubuntu.com/Kernel/Dev/KernelPatches says clone stock linux-2.6
from kernel.org, that's all too confusing.
Decide what you want and adjust the docs, please... Now the patch is against
ubuntu-3.2.
With kind regards, =|o)
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-31-generic 3.2.0-31.50
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.28 x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: paul 2554 F.... pulseaudio
CRDA:
country AM:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 20), (N/A, 18)
(5250 - 5330 @ 20), (N/A, 18), DFS
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0640000 irq 44'
Mixer name : 'Realtek ALC262'
Components : 'HDA:10ec0262,10cf0000,00100002
HDA:11c11040,11c10001,00100200'
Controls : 29
Simple ctrls : 16
Date: Mon Oct 8 14:45:44 2012
HibernationDevice: RESUME=UUID=42c86022-ee03-45af-bd1e-58be6d2aa822
InstallationMedia: Kubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64
(20120820.1)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: FUJITSU SIEMENS LIFEBOOK S7110
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcEnviron:
LANGUAGE=de_DE
TERM=xterm-color
PATH=(custom, user)
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.28
root=UUID=10e6b6ad-159a-41a1-8efe-04c1504aa075 ro
crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.28 N/A
linux-backports-modules-3.2.28 N/A
linux-firmware 1.79.1
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
StagingDrivers: zram
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/10/2008
dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
dmi.bios.version: Version 1.35
dmi.board.name: FJNB1B5
dmi.board.vendor: FUJITSU
dmi.board.version: CP279611-02
dmi.chassis.type: 10
dmi.chassis.vendor: FUJITSU SIEMENS
dmi.chassis.version: S7110
dmi.modalias:
dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.35:bd09/10/2008:svnFUJITSUSIEMENS:pnLIFEBOOKS7110:pvr:rvnFUJITSU:rnFJNB1B5:rvrCP279611-02:cvnFUJITSUSIEMENS:ct10:cvrS7110:
dmi.product.name: LIFEBOOK S7110
dmi.sys.vendor: FUJITSU SIEMENS
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