I have software raid1 /dev/md0 composed from two hard-disks. md0 contains logical volumes, which are using like harddisk for KVM virtual machine. If i create lvm snapshot of some logical volume while re-syncing md0 all lvm crash by reading from snapshot. Reproducible: Always Steps to Reproduce: 1. resync raid device 2. create snaphost from lvm on placement on resyncing device 3. read from snapshot #mdadm -D /dev/md5 /dev/md5: Version : 1.2 Creation Time : Sat Oct 9 17:10:31 2010 Raid Level : raid1 Array Size : 976758841 (931.51 GiB 1000.20 GB) Used Dev Size : 976758841 (931.51 GiB 1000.20 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Mon Jan 24 00:20:33 2011 State : active Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Name : medved:5 (local to host medved) UUID : 9e06cde2:84e797ca:741eb64a:3bca0d5a Events : 79 Number Major Minor RaidDevice State 0 8 33 0 active sync /dev/sdc1 1 8 49 1 active sync /dev/sdd1 # vgdisplay --- Volume group --- VG Name kvm2 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 533 VG Access read/write VG Status resizable MAX LV 0 Cur LV 7 Open LV 6 Max PV 0 Cur PV 1 Act PV 1 VG Size 931.51 GiB PE Size 4.00 MiB Total PE 238466 Alloc PE / Size 77824 / 304.00 GiB Free PE / Size 160642 / 627.51 GiB VG UUID zdh6pJ-3DWd-ZS1z-jMOJ-CcQ3-6xje-4ddS8I # lvdisplay /dev/kvm2/owl_data --- Logical volume --- LV Name /dev/kvm2/owl_data VG Name kvm2 LV UUID 3z2YtB-DqJk-1zfO-rhEg-nnSk-cBun-gU9ErE LV Write Access read/write LV Status available # open 1 LV Size 160.00 GiB Current LE 40960 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1
Please paste your `emerge --info =sys-fs/lvm2-2.02.73-r1 =sys-fs/mdadm-3.1.4' output in a comment.
emerge --info =sys-fs/lvm2-2.02.73-r1 =sys-fs/mdadm-3.1.4 Portage 2.1.9.25 (default/linux/amd64/10.0, gcc-4.4.3, glibc-2.11.2-r0, 2.6.35-gentoo-r7 x86_64) ================================================================= System Settings ================================================================= System uname: Linux-2.6.35-gentoo-r7-x86_64-Intel-R-_Core-TM-_i7_CPU_860_@_2.80GHz-with-gentoo-2.0.1 Timestamp of tree: Sun, 23 Jan 2011 22:30:01 +0000 app-shells/bash: 4.0_p37 dev-lang/python: 2.6.5-r3, 3.1.2-r4 dev-util/cmake: 2.8.1-r2 sys-apps/baselayout: 2.0.1 sys-apps/openrc: 0.6.3 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.65 sys-devel/automake: 1.11.1 sys-devel/binutils: 2.20.1-r1 sys-devel/gcc: 4.4.3-r2 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b sys-devel/make: 3.81-r2 virtual/os-headers: 2.6.30-r1 (sys-kernel/linux-headers) ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -mtune=generic -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/eselect/postgresql /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=core2 -mtune=generic -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs distlocks fixlafiles fixpackages news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" GENTOO_MIRRORS="http://distfiles.gentoo.org" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j16" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="acl adns amd64 authdaemond bash-completion bzip2 cdb clamav cli cracklib crypt curl curlwrappers cxx ftp gpm iconv idn imap ipv6 jabber lm_sensors logrotate lvm maildir mailwrapper mbox memlimit milter mmx modules multilib mysql mysqli nfs nls nptl nptlonly pam pcre perl php postgres prelude profile python readline ruby samba sasl session sharedmem snmp sockets socks5 sse sse2 ssl sysfs syslog tcpd threads tokenizer unicode vhosts xml2 zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nouveau nv r128 radeon savage sis tdfx trident vesa via vmware dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY ================================================================= Package Settings ================================================================= sys-fs/lvm2-2.02.73-r1 was built with the following: USE="lvm1 (multilib) readline static (-clvm) (-cman) (-selinux)" sys-fs/mdadm-3.1.4 was built with the following: USE="(multilib) -static"
I can't reproduce it here at all. Can you reproduce it on other systems, or ideally, provide an exact LVM+MDRAID setup w/ storage on loopback devices that reproduces it.
