Hi Konrad,
Does this look at all familiar? There is some more info in the full bug
log at http://bugs.debian.org/637234 . In particular, contrary to the
message below, the user subsequently confirmed that the issue appears to
be Xen specific (doesn't happen on native or vmware) and that it arose
between 2.6.39-2-686-pae and 3.0.0-1-686-pae.
Could it be related to edf6ef59ec7e "xen-blkfront: Introduce
BLKIF_OP_FLUSH_DISKCACHE support"? That looks like the only pertinent
change between 2.6.39 and 3.0.
Gedalya, 2.6.39-2-686-pae could be anything from v2.6.39..v2.6.39.2
please could you confirm which package version you have installed in
case it makes a difference.
Cheers,
Ian.
On Tue, 2011-08-09 at 14:07 -0400, Gedalya wrote:
> Package: linux-2.6
> Version: 3.0.0-1
> Severity: important
>
>
> Hello,
>
> I have a xen host running debian squeeze, amd64, some of the DomU's are
> running wheezy. My mail server is a DomU called "mail", using ext4 for the
> root (and other) FS. A dist-upgrade on "mail" has upgraded the kernel to
> linux-image-3.0.0-1-686-pae, and at this point I started getting I/O errors
> during the boot process, as follows:
>
> -----------
> Starting MySQL database server: mysqld[ 6.453894] end_request: I/O error,
> dev xvda, sector 4456704
> [ 6.453919] end_request: I/O error, dev xvda, sector 4456704
> [ 6.453964] Aborting journal on device xvda-8.
> [ 6.462873] EXT4-fs error (device xvda): ext4_journal_start_sb:296:
> Detected aborted journal
> [ 6.462903] EXT4-fs (xvda): Remounting filesystem read-only
> [ 6.463276] journal commit I/O error
> . . . . . . . . . . . . . . failed!
> Starting MTA: exim4.
> Starting IMAP/POP3 mail server: dovecot.
> startpar: service(s) returned failure: mysql ... failed!
> -----------
>
> So I went ahead and installed wheezy on a brand new DomU, and this
> was repeated immediately when booting the machine after the installation
> completed.
>
> -----------
> Starting NFS common utilities: statd[ 3.977392] end_request: I/O error,
> dev xvda, sector 4456808
> [ 3.977415] end_request: I/O error, dev xvda, sector 4456808
> [ 3.977470] Aborting journal on device xvda-8.
> [ 3.990442] journal commit I/O error
> [ 3.991041] EXT4-fs error (device xvda): ext4_journal_start_sb:296:
> Detected aborted journal
> [ 3.991126] EXT4-fs (xvda): Remounting filesystem read-only
> failed!
> Cleaning up temporary files....
> Setting up console font and keymap...done.
> startpar: service(s) returned failure: nfs-common ... failed!
> INIT: Entering runlevel: 2
> Using makefile-style concurrent boot in runlevel 2.
> Starting rpcbind daemon...Already running..
> Starting NFS common utilities: statd failed!
> touch: cannot touch `/var/log/dmesg.new': Read-only file system
> chown: cannot access `/var/log/dmesg.new': No such file or directory
> chmod: cannot access `/var/log/dmesg.new': No such file or directory
> ln: creating hard link `/var/log//dmesg.0': Read-only file system
> ... etc. ...
> -----------
>
> Now, it happenes this way exactly every _other_ time the machines boot.
> When I reboot after these I/O errors, fsck is run and then the machine
> seems to be actually fine until the next reboot when it all happens
> again.
>
> For me, this is happening on xen DomU's, only when running linux
> 3.0.0-1-686-pae, only when using ext4 for the root FS.
> No problems when booting back to 2.6.39-2-686-pae.
>
> Please let me know what more specific testing needs to be done, if
> necessary I can test more platforms / flavors.
>
> I have observed nothing to suggest this is related to xen, it's just my
> platform here.
>
> -- Package-specific info:
> ** Version:
> Linux version 3.0.0-1-686-pae (Debian 3.0.0-1) (ben@xxxxxxxxxxxxxxx) (gcc
> version 4.5.3 (Debian 4.5.3-3) ) #1 SMP Sun Jul 24 14:27:32 UTC 2011
>
> ** Command line:
> root=UUID=8a1a7bca-b0e2-4714-baf1-b852eab25843 ro quiet
>
> ** Not tainted
>
> ** Kernel log:
> [ 0.016117] PCI: System does not support PCI
> [ 0.016120] PCI: System does not support PCI
> [ 0.016231] Switching to clocksource xen
> [ 0.017739] pnp: PnP ACPI: disabled
> [ 0.017742] PnPBIOS: Disabled
> [ 0.018820] Switched to NOHz mode on CPU #1
> [ 0.018902] Switched to NOHz mode on CPU #0
> [ 0.020460] PCI: max bus depth: 0 pci_try_num: 1
> [ 0.020696] NET: Registered protocol family 2
> [ 0.020967] IP route cache hash table entries: 8192 (order: 3, 32768 bytes)
> [ 0.021437] TCP established hash table entries: 32768 (order: 6, 262144
> bytes)
> [ 0.021752] TCP bind hash table entries: 32768 (order: 6, 262144 bytes)
> [ 0.022063] TCP: Hash tables configured (established 32768 bind 32768)
> [ 0.022069] TCP reno registered
> [ 0.022077] UDP hash table entries: 512 (order: 2, 16384 bytes)
> [ 0.022100] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
> [ 0.022469] NET: Registered protocol family 1
> [ 0.022486] PCI: CLS 0 bytes, default 64
> [ 0.022574] Unpacking initramfs...
> [ 0.042069] Freeing initrd memory: 22480k freed
> [ 0.046257] platform rtc_cmos: registered platform RTC device (no PNP
> device found)
> [ 0.046605] audit: initializing netlink socket (disabled)
> [ 0.046616] type=2000 audit(1312911347.921:1): initialized
> [ 0.056740] HugeTLB registered 2 MB page size, pre-allocated 0 pages
> [ 0.057039] VFS: Disk quotas dquot_6.5.2
> [ 0.057099] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
> [ 0.057194] msgmni has been set to 999
> [ 0.057354] alg: No test for stdrng (krng)
> [ 0.057382] Block layer SCSI generic (bsg) driver version 0.4 loaded
> (major 253)
> [ 0.057386] io scheduler noop registered
> [ 0.057388] io scheduler deadline registered
> [ 0.057402] io scheduler cfq registered (default)
> [ 0.057598] isapnp: Scanning for PnP cards...
> [ 0.409558] isapnp: No Plug & Play device found
> [ 0.409873] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> [ 0.412773] Linux agpgart interface v0.103
> [ 0.413203] i8042: PNP: No PS/2 controller found. Probing ports directly.
> [ 0.414033] i8042: No controller found
> [ 0.414227] mousedev: PS/2 mouse device common for all mice
> [ 0.454109] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
> [ 0.454143] rtc_cmos: probe of rtc_cmos failed with error -38
> [ 0.454162] cpuidle: using governor ladder
> [ 0.454164] cpuidle: using governor menu
> [ 0.454336] TCP cubic registered
> [ 0.454455] NET: Registered protocol family 10
> [ 0.454980] Mobile IPv6
> [ 0.454983] NET: Registered protocol family 17
> [ 0.454987] Registering the dns_resolver key type
> [ 0.455001] Using IPI No-Shortcut mode
> [ 0.455069] PM: Hibernation image not present or could not be loaded.
> [ 0.455080] registered taskstats version 1
> [ 0.455093] XENBUS: Device with no driver: device/vbd/51712
> [ 0.455095] XENBUS: Device with no driver: device/vbd/51744
> [ 0.455097] XENBUS: Device with no driver: device/vif/0
> [ 0.455099] XENBUS: Device with no driver: device/vif/1
> [ 0.455102] XENBUS: Device with no driver: device/console/0
> [ 0.455114]
> /build/buildd-linux-2.6_3.0.0-1-i386-ML66CU/linux-2.6-3.0.0/debian/build/source_i386_none/drivers/rtc/hctosys.c:
> unable to open rtc device (rtc0)
> [ 0.455175] Initializing network drop monitor service
> [ 0.455438] Freeing unused kernel memory: 404k freed
> [ 0.456030] Write protecting the kernel text: 2768k
> [ 0.456248] Write protecting the kernel read-only data: 1068k
> [ 0.456250] NX-protecting the kernel data: 3376k
> [ 0.490525] udevd[50]: starting version 172
> [ 0.510452] Initialising Xen virtual ethernet driver.
> [ 0.526964] blkfront: xvda: barrier: enabled
> [ 0.528495] xvda:
> [ 0.528633] Setting capacity to 10485760
> [ 0.528637] xvda: detected capacity change from 0 to 5368709120
> [ 0.529412] blkfront: xvdc: barrier: enabled
> [ 0.558774] xvdc: unknown partition table
> [ 0.559489] Setting capacity to 1048576
> [ 0.559502] xvdc: detected capacity change from 0 to 536870912
> [ 0.973128] PM: Starting manual resume from disk
> [ 0.973131] PM: Hibernation image partition 202:32 present
> [ 0.973133] PM: Looking for hibernation image.
> [ 0.973405] PM: Image not found (code -22)
> [ 0.973408] PM: Hibernation image not present or could not be loaded.
> [ 0.983577] EXT4-fs (xvda): INFO: recovery required on readonly filesystem
> [ 0.983581] EXT4-fs (xvda): write access will be enabled during recovery
> [ 1.024513] EXT4-fs warning (device xvda): ext4_clear_journal_err:4155:
> Filesystem error recorded from previous mount: IO failure
> [ 1.024524] EXT4-fs warning (device xvda): ext4_clear_journal_err:4156:
> Marking fs in need of filesystem check.
> [ 1.025790] EXT4-fs (xvda): recovery complete
> [ 1.026596] EXT4-fs (xvda): mounted filesystem with ordered data mode.
> Opts: (null)
> [ 1.928491] udevd[160]: starting version 172
> [ 2.124852] input: PC Speaker as /devices/platform/pcspkr/input/input0
> [ 2.204922] Error: Driver 'pcspkr' is already registered, aborting...
> [ 2.550476] Adding 524284k swap on /dev/xvdc. Priority:-1 extents:1
> across:524284k SS
> [ 2.564932] EXT4-fs (xvda): re-mounted. Opts: (null)
> [ 3.156251] blkfront: barrier: empty write xvda op failed
> [ 3.156255] blkfront: xvda: barrier or flush: disabled
> [ 3.185628] EXT4-fs (xvda): re-mounted. Opts: errors=remount-ro
> [ 3.251006] loop: module loaded
> [ 4.326336] RPC: Registered named UNIX socket transport module.
> [ 4.326344] RPC: Registered udp transport module.
> [ 4.326350] RPC: Registered tcp transport module.
> [ 4.326356] RPC: Registered tcp NFSv4.1 backchannel transport module.
> [ 4.361714] FS-Cache: Loaded
> [ 4.382614] FS-Cache: Netfs 'nfs' registered for caching
> [ 4.402479] Installing knfsd (copyright (C) 1996 okir@xxxxxxxxxxxx).
> [ 14.460105] eth0: no IPv6 routers present
>
> ** Model information
> not available
>
> ** Loaded modules:
> Module Size Used by
> nfsd 197933 2
> nfs 218404 0
> lockd 61314 2 nfsd,nfs
> fscache 31952 1 nfs
> auth_rpcgss 32183 2 nfsd,nfs
> nfs_acl 12463 2 nfsd,nfs
> sunrpc 139050 6 nfsd,nfs,lockd,auth_rpcgss,nfs_acl
> loop 17866 0
> evdev 12995 0
> snd_pcm 53315 0
> snd_timer 22027 1 snd_pcm
> snd 38562 2 snd_pcm,snd_timer
> soundcore 12992 1 snd
> snd_page_alloc 12899 1 snd_pcm
> pcspkr 12515 0
> ext4 274801 1
> mbcache 12898 1 ext4
> jbd2 56798 1 ext4
> crc16 12327 1 ext4
> xen_netfront 21670 0
> xen_blkfront 17215 2
>
> ** PCI devices:
>
> ** USB devices:
> not available
>
>
> -- System Information:
> Debian Release: wheezy/sid
> APT prefers testing
> APT policy: (500, 'testing')
> Architecture: i386 (i686)
>
> Kernel: Linux 3.0.0-1-686-pae (SMP w/2 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
>
> Versions of packages linux-image-3.0.0-1-686-pae depends on:
> ii debconf [debconf-2.0] 1.5.40 Debian configuration management
> sy
> ii initramfs-tools [linux-initra 0.99 tools for generating an initramfs
> ii linux-base 3.3 Linux image base package
> ii module-init-tools 3.16-1 tools for managing Linux kernel
> mo
>
> Versions of packages linux-image-3.0.0-1-686-pae recommends:
> pn firmware-linux-free <none> (no description available)
> ii libc6-i686 2.13-10 Embedded GNU C Library: Shared
> lib
>
> Versions of packages linux-image-3.0.0-1-686-pae suggests:
> ii grub-pc 1.99-9 GRand Unified Bootloader,
> version
> pn linux-doc-3.0.0 <none> (no description available)
>
> Versions of packages linux-image-3.0.0-1-686-pae is related to:
> pn firmware-bnx2 <none> (no description available)
> pn firmware-bnx2x <none> (no description available)
> pn firmware-ipw2x00 <none> (no description available)
> pn firmware-ivtv <none> (no description available)
> pn firmware-iwlwifi <none> (no description available)
> pn firmware-linux <none> (no description available)
> pn firmware-linux-nonfree <none> (no description available)
> pn firmware-qlogic <none> (no description available)
> pn firmware-ralink <none> (no description available)
> pn xen-hypervisor <none> (no description available)
>
> -- debconf information:
> linux-image-3.0.0-1-686-pae/prerm/removing-running-kernel-3.0.0-1-686-pae:
> true
> linux-image-3.0.0-1-686-pae/postinst/ignoring-ramdisk:
> linux-image-3.0.0-1-686-pae/postinst/missing-firmware-3.0.0-1-686-pae:
> linux-image-3.0.0-1-686-pae/postinst/depmod-error-initrd-3.0.0-1-686-pae:
> false
>
>
>
> --
> To UNSUBSCRIBE, email to debian-kernel-REQUEST@xxxxxxxxxxxxxxxx
> with a subject of "unsubscribe". Trouble? Contact listmaster@xxxxxxxxxxxxxxxx
> Archive:
> http://lists.debian.org/20110809180728.2279.11548.reportbug@xxxxxxxxxxxxxxxxx
>
>
--
Ian Campbell
In those days he was wiser than he is now -- he used to frequently take
my advice.
-- Winston Churchill
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