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Ticket Resolution Summary Owner Reporter
#2524 fixed data corruption under heavy I/O load on host Georg Moritz
Description

Heavy I/O load on the host leads to ide dma timeouts, device resets, incorrect read/write operations and ultimately to data corruption in the VBox.

It looks like iowait conditions on the host don't lead to a blocking of the virtual

vb10:~# tail -n 0 -f /var/log/messages
Oct 27 18:28:35 vb10 kernel: [ 1559.569320] hdb: dma_timer_expiry: dma status == 0x61
Oct 27 18:28:45 vb10 kernel: [ 1569.569594] hdb: DMA timeout error
Oct 27 18:28:45 vb10 kernel: [ 1569.570105] hdb: dma timeout error: status=0x48 { DriveReady DataRequest }
Oct 27 18:28:45 vb10 kernel: [ 1569.570127] ide: failed opcode was: unknown
Oct 27 18:28:45 vb10 kernel: [ 1569.570766] hda: DMA disabled
Oct 27 18:28:45 vb10 kernel: [ 1569.572039] hdb: DMA disabled
Oct 27 18:29:20 vb10 kernel: [ 1599.568186] ide0: reset timed-out, status=0x90
Oct 27 18:29:20 vb10 kernel: [ 1604.572374] hda: status timeout: status=0x90 { Busy }
Oct 27 18:29:20 vb10 kernel: [ 1604.572396] ide: failed opcode was: unknown
Oct 27 18:29:20 vb10 kernel: [ 1604.580286] Clocksource tsc unstable (delta = 4687228551 ns)
Oct 27 18:30:00 vb10 kernel: quest: I/O error, dev hdb, sector 506799
Oct 27 18:30:01 vb10 kernel: [ 1635.421648] __ratelimit: 5022 messages suppressed
Oct 27 18:30:01 vb10 kernel: [ 1635.421648] lost page write due to I/O error on hdb1
Oct 27 18:31:02 vb10 kernel: nd_request: I/O error, dev hdb, sector 551111
Oct 27 18:31:09 vb10 kernel: [ 1714.280038] __ratelimit: 5014 messages suppressed
Oct 27 18:31:09 vb10 kernel: [ 1714.280038] lost page write due to I/O error on hdb1
Oct 27 18:31:20 vb10 kernel: [ 1725.024393] lost page write due to I/O error on hdb1
Oct 27 18:31:26 vb10 kernel: [ 1730.728966] lost page write due to I/O error on hdb1
Oct 27 18:31:29 vb10 kernel: [ 1733.614585] lost page write due to I/O error on hdb1
Oct 27 18:31:29 vb10 kernel: [ 1733.905566] lost page write due to I/O error on hdb1
Oct 27 18:31:31 vb10 kernel: [ 1736.305170] __ratelimit: 10 messages suppressed
Oct 27 18:31:31 vb10 kernel: [ 1736.305403] lost page write due to I/O error on hdb1
Oct 27 18:31:36 vb10 kernel: [ 1741.416768] __ratelimit: 23 messages suppressed
Oct 27 18:31:36 vb10 kernel: [ 1741.417144] lost page write due to I/O error on hdb1
Oct 27 18:31:41 vb10 kernel: [ 1746.255712] __ratelimit: 21 messages suppressed
Oct 27 18:31:41 vb10 kernel: [ 1746.255917] lost page write due to I/O error on hdb1
Oct 27 18:31:46 vb10 kernel: [ 1751.279075] __ratelimit: 22 messages suppressed
Oct 27 18:31:46 vb10 kernel: [ 1751.279288] lost page write due to I/O error on hdb1
Oct 27 18:31:51 vb10 kernel: [ 1756.235377] __ratelimit: 20 messages suppressed
Oct 27 18:31:51 vb10 kernel: [ 1756.235377] lost page write due to I/O error on hdb1
Oct 27 18:31:56 vb10 kernel: [ 1761.304274] __ratelimit: 20 messages suppressed
Oct 27 18:31:56 vb10 kernel: [ 1761.304455] lost page write due to I/O error on hdb1
Oct 27 18:32:01 vb10 kernel: 009488] end_request: I/O error, dev hdb, sector 580247
Oct 27 18:32:03 vb10 kernel: r, dev hdb, sector 601439
Oct 27 18:32:03 vb10 kernel: [ 1767.301521] __journal_remove_journal_head: freeing b_frozen_data
^C
vb10:~# ls -l /data
ls: cannot access /data/lost+found: Input/output error
total 260968
-rw-r----- 1 root root 266964992 2008-10-27 18:30 foo.img
d????????? ? ?    ?            ?                ? lost+found
vb10:~#

It looks like iowait conditions on the host don't lead to the blocking of the virtual pci bus, which results in the disk driver to run into timeouts as per the pci spec.

Setup:

Host: 8 CPUs, 32 GB RAM, 2.8 TB RAID 5 divided into 32 logical volumes of 83 GB each, running debian lenny

VBoxes: 768 MB RAM, 1 GB ext3 root fs (hda), 11 GB ext3 data fs (hdb), running debian lenny

I have been testing throughput and stability running iozone simultaneously in different numbers of VBoxes. Corruption rate was 0 out of 4 (0/4), 5/8 and 16/16.

#3302 obsolete d-link Bluetooth USB Adapter - DBT-120 Spock
Description

I want to connect my DBT-120 to the VM. But it does not work. It has also no name --> unbekanntes Gerät 0A12:0001 [0443]

Product Link:

http://www.d-link.de/?go=jN7uAYLx/oIJaWVdDbgYU93ygJVYLelXSNvhLPG3yV3oWI58kP98f8p8Nqtn6TU6VHqqnHtB85pJVJ23gKftOQ5A8ruEaoqgXYP+pmsMmdsPTbhHNpbF3RLA5TSEJcbefr8r/Ep+/J4S7CoTftygjm/1giFdsmyuGh4=

#4750 duplicate cyclic services.exe cpu consumption on Windows XP guest. nemo34
Description

I am using VirtualBox 3.0.4 on Ubuntu 9.04 host and a vdmk image of my windows XP sp3 guest. CPU load has been an issue from the beginning. After two weeks, I have upgraded every driver I could find and attempted most combos of parameters I could

Please note I am running on a DELL Latitude D630 with an Intel DualCore, but I am declaring only one processor. All attempts to use 2 processors with IO-ACPI and VT-x enabled failed to boot.

After booting the VM, CPU usage on Host is stable at 46 - 48% CPU usage on Guest varies periodically from 5% to 100%. I isolated the servcices.exe as the CPU consumer and started shutting down services one after another but failed to locate the faulty one.

Remark one: 48% CPU usage on Host is a lot...

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