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Bug 99532 - O_DIRECT enabled breaks lvm2 on hppa, tools are unabled to detect physical volumes
Summary: O_DIRECT enabled breaks lvm2 on hppa, tools are unabled to detect physical vo...
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: HPPA Linux
: High normal (vote)
Assignee: HPPA Porters
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2005-07-19 07:49 UTC by Stefan Knoblich (RETIRED)
Modified: 2018-06-06 05:21 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---

Attachments
disables O_DIRECT support on hppa (lvm2.diff,409 bytes, patch)
2005-07-19 17:12 UTC, Stefan Knoblich (RETIRED) 		Details | Diff
View All Add an attachment (proposed patch, testcase, etc.)

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Description Stefan Knoblich (RETIRED) gentoo-dev 2005-07-19 07:49:32 UTC 
By default lvm tools are built with O_DIRECT enabled if available, unless told
otherwise (--disable-o_direct configure switch). This however breaks lvm2 on hppa,
tested with lvm2-2.01.09 and -2.00.33.

Reproducible: Always
Steps to Reproduce:
1. emerge lvm2
2. pvcreate /dev/sda6 /dev/sdb1
3. pvscan -v, no physical volumes detected, vgcreate fails with no pvs found

Actual Results:  
pvcreate /dev/sda6 /dev/sdb1 doesn't show any errors.

hppa lvm2 # pvscan -v
    Wiping cache of LVM-capable devices
    Wiping internal VG cache
    Walking through all physical volumes
  No matching physical volumes found


Expected Results:  
after adding use hppa && myconf="${myconf} --disable-o_direct" to the ebuild
and reemerging:

hppa lvm2 # pvscan -v
    Wiping cache of LVM-capable devices
    Wiping internal VG cache
    Walking through all physical volumes
  PV /dev/sda6   VG vg00   lvm2 [11.30 GB / 11.30 GB free]
  PV /dev/sdb1   VG vg00   lvm2 [16.96 GB / 16.96 GB free]
  Total: 2 [28.26 GB] / in use: 2 [28.26 GB] / in no VG: 0 [0   ]

Possible drawback:
configure: WARNING: Warning: O_DIRECT disabled: low-memory pvmove may lock up


Portage 2.0.51.22-r1 (default-linux/hppa/2005.0, gcc-3.3.5,
glibc-2.3.4.20040808-r1, 2.6.12.2-pa2 parisc)
=================================================================
System uname: 2.6.12.2-pa2 parisc PA8600 (PCX-W+)
Gentoo Base System version 1.6.12
dev-lang/python:     2.3.5
sys-apps/sandbox:    1.2.10
sys-devel/autoconf:  2.13, 2.59-r6
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.5
sys-devel/binutils:  2.15.92.0.2-r10
sys-devel/libtool:   1.5.18-r1
virtual/os-headers:  2.6.11-r2
ACCEPT_KEYWORDS="hppa"
AUTOCLEAN="yes"
CBUILD="hppa2.0-unknown-linux-gnu"
CFLAGS="-O2 -pipe -march=2.0"
CHOST="hppa2.0-unknown-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config
/usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-O2 -pipe -march=2.0"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks sandbox sfperms strict"
GENTOO_MIRRORS="http://distfiles.gentoo.org
http://distro.ibiblio.org/pub/Linux/distributions/gentoo"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="hppa berkdb crypt gdbm ncurses nls pam ssl tcpd userlocales userland_GNU
kernel_linux elibc_glibc"
Unset:  ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS, PORTDIR_OVERLAY
Comment 1 Eric Edgar (RETIRED) gentoo-dev 2005-07-19 12:05:48 UTC 
Could you send a patch comparing your ebuild to the original?  I will get this 
in.
Comment 2 Stefan Knoblich (RETIRED) gentoo-dev 2005-07-19 17:12:45 UTC 
Created attachment 63826 [details, diff]
disables O_DIRECT support on hppa
Comment 3 Eric Edgar (RETIRED) gentoo-dev 2005-07-20 07:11:13 UTC 
Applied