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elwood75
n00b
Joined: 24 Sep 2003
Posts: 7
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 Posted: Wed Sep 24, 2003 3:53 pm Post subject: ext3fs - 36 gigs free, new files are zero length?! |
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Hi all,
Long time user, first time poster. I've got a situation where I'm using a 91GB ext3fs partition solely to store MythTV media (read: most files 1GB+ in size). The problem is, and has been for a few weeks, once I get to 60 Gigs of use (as shown by df -h), I can create files, but adding content to them fails without error.
Myth will record show after show, and each recording ends up 0 bytes. I'll do:
| Code: | $ echo "Brad" > test.txt
$ cat test.txt
$
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The file will be empty! Would this be an inode issue? bad blocks? When I do a df -i, it shows 99% free inodes.
Any thoughts how I can further diagnose this?
I'm performing a e2fsck -c -y /dev/hda4 now, but at current estimates, it won't be done for 6 more hours.
Thanks,
Brad |
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delta407
Bodhisattva
Joined: 23 Apr 2002
Posts: 2876
Location: Chicago, IL
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| Posted: Wed Sep 24, 2003 5:39 pm Post subject: Re: ext3fs - 36 gigs free, new files are zero length?! |
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| elwood75 wrote: | | Long time user, first time poster. |
| elwood75 wrote: | I'll do:
| Code: | $ echo "Brad" > test.txt
$ cat test.txt
$
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 That's not good.
Anything in the kernel log? (`dmesg | tail`) What kernel are you using? (`uname -a`) Anything abnormal about your configuration?
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I don't believe in witty sigs. |
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elwood75
n00b
Joined: 24 Sep 2003
Posts: 7
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| Posted: Wed Sep 24, 2003 6:12 pm Post subject: |
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It's a pretty straight-forward configuration, run of the mill cheapo VIA chipset and western digital hard drive. No fancy hardware to speak of.
uname results:
| Code: |
htpc root # uname -a
Linux htpc.corrion.com 2.4.20-gentoo-r5 #2 SMP Sat Jun 7 13:43:06 Local time zone must be set--see zic m i686 Intel(R) Celeron(R) CPU 1.80GHz GenuineIntel GNU/Linux
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dmesg has rolled over with this repeating disk message:
sure enough, looks like I've got hard drive issues. | Code: | ide0: reset: success
hda: write_intr error1: nr_sectors=1, stat=0x51
hda: write_intr: status=0x51 { DriveReady SeekComplete Error }
hda: write_intr: error=0x10 { SectorIdNotFound }, LBAsect=234411207, sector=1932
00135
hda: write_intr error1: nr_sectors=1, stat=0x51
hda: write_intr: status=0x51 { DriveReady SeekComplete Error }
hda: write_intr: error=0x10 { SectorIdNotFound }, LBAsect=234411207, sector=1932
00135
hda: write_intr error1: nr_sectors=1, stat=0x51
hda: write_intr: status=0x51 { DriveReady SeekComplete Error }
hda: write_intr: error=0x10 { SectorIdNotFound }, LBAsect=234411207, sector=1932
00135
hda: write_intr error1: nr_sectors=1, stat=0x51
hda: write_intr: status=0x51 { DriveReady SeekComplete Error }
hda: write_intr: error=0x10 { SectorIdNotFound }, LBAsect=234411207, sector=1932
00135
ide0: reset: success
hda: write_intr error1: nr_sectors=1, stat=0x51
hda: write_intr: status=0x51 { DriveReady SeekComplete Error }
hda: write_intr: error=0x10 { SectorIdNotFound }, LBAsect=234411207, sector=1932
00135
end_request: I/O error, cmd 1 dev 03:04 (hda), sector 193200135
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hdparm results:
| Code: | htpc root # hdparm -i /dev/hda
/dev/hda:
Model=WDC WD1200JB-75CRA0, FwRev=16.06V16, SerialNo=WD-WMA8C2787066
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=40
BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=off
CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=234375000
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=no WriteCache=enabled
Drive conforms to: device does not report version:
* signifies the current active mode
htpc root #
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A quick look google and many people report these errors as interrupt issues, so maybe its chipset related.
| Code: |
htpc root # cat /proc/pci
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: VIA Technologies, Inc. VT8753 [P4X266 AGP] (rev 1).
Master Capable. Latency=8.
Prefetchable 32 bit memory at 0xe0000000 [0xe3ffffff].
Bus 0, device 1, function 0:
PCI bridge: VIA Technologies, Inc. VT8633 [Apollo Pro266 AGP] (rev 0).
Master Capable. No bursts. Min Gnt=12.
Bus 0, device 9, function 0:
Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (
rev 16).
IRQ 11.
Master Capable. Latency=32. Min Gnt=32.Max Lat=64.
I/O at 0xec00 [0xecff].
Non-prefetchable 32 bit memory at 0xdfffff00 [0xdfffffff].
Bus 0, device 10, function 0:
Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 16).
IRQ 5.
Master Capable. Latency=32. Min Gnt=2.Max Lat=24.
I/O at 0xe800 [0xe8ff].
Bus 0, device 11, function 0:
Multimedia video controller: PCI device 4444:0016 (Internext Compression Inc
) (rev 1).
IRQ 11.
Master Capable. Latency=32. Min Gnt=128.Max Lat=8.
Prefetchable 32 bit memory at 0xd8000000 [0xdbffffff].
Bus 0, device 16, function 2:
USB Controller: VIA Technologies, Inc. USB (#3) (rev 128).
IRQ 5.
Master Capable. Latency=32.
I/O at 0xe400 [0xe41f].
Bus 0, device 16, function 1:
USB Controller: VIA Technologies, Inc. USB (#2) (rev 128).
IRQ 11.
Master Capable. Latency=32.
I/O at 0xe000 [0xe01f].
Bus 0, device 16, function 0:
USB Controller: VIA Technologies, Inc. USB (rev 128).
IRQ 9.
Master Capable. Latency=32.
I/O at 0xdc00 [0xdc1f].
Bus 0, device 16, function 3:
USB Controller: VIA Technologies, Inc. USB 2.0 (rev 130).
IRQ 11.
Master Capable. Latency=32.
Non-prefetchable 32 bit memory at 0xdffffe00 [0xdffffeff].
Bus 0, device 17, function 0:
ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge (rev 0).
Bus 0, device 17, function 1:
IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC Bus Master IDE
(rev 6).
IRQ 14.
Master Capable. Latency=32.
I/O at 0xfc00 [0xfc0f].
Bus 0, device 17, function 5:
Multimedia audio controller: VIA Technologies, Inc. VT8233 AC97 Audio Contro
ller (rev 80).
IRQ 5.
I/O at 0xd800 [0xd8ff].
Bus 1, device 0, function 0:
VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 4).
IRQ 9.
Master Capable. Latency=32. Min Gnt=16.Max Lat=32.
Prefetchable 32 bit memory at 0xd4000000 [0xd5ffffff].
Non-prefetchable 32 bit memory at 0xdfefc000 [0xdfefffff].
Non-prefetchable 32 bit memory at 0xdf000000 [0xdf7fffff].
htpc root #
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Have you seen anything along these lines before?
Thanks,
Brad |
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delta407
Bodhisattva
Joined: 23 Apr 2002
Posts: 2876
Location: Chicago, IL
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| Posted: Wed Sep 24, 2003 6:26 pm Post subject: |
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| elwood75 wrote: | | Code: | | hda: write_intr: error=0x10 { SectorIdNotFound }, LBAsect=234411207, sector=1932 |
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"SectorIdNotFound"... incorrect drive geometry?
| elwood75 wrote: | hdparm results:
| Code: | | htpc root # hdparm -i /dev/hda |
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What does `hdparm /dev/hda` say? (That gives info about the configuration, including geometry, instead of the device itself.)
| elwood75 wrote: | | A quick look google and many people report these errors as interrupt issues, so maybe its chipset related. |
Could also be from a performance-enhancing (but malfunctioning) hdparm setting.
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elwood75
n00b
Joined: 24 Sep 2003
Posts: 7
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| Posted: Wed Sep 24, 2003 6:43 pm Post subject: |
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Here's the hdparm info:
| Code: |
htpc root # hdparm /dev/hda
/dev/hda:
multcount = 0 (off)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 14589/255/63, sectors = 234375000, start = 0
htpc root #
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Here's hoping its a config issue. When it comes to drives, I'm a plug in and watch it work kind of guy. Do these geometry numbers tell you anything?
Hmm. I'm surprised-- DMA is supposed to be on, wonder whats going on here. But that shouldn't affect this, if anything, turning DMA off should help if its a performance issue, right?
Brad |
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delta407
Bodhisattva
Joined: 23 Apr 2002
Posts: 2876
Location: Chicago, IL
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| Posted: Wed Sep 24, 2003 8:21 pm Post subject: |
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| elwood75 wrote: | | Code: | IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off) |
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Well, those are the settings that have a tendency to break things, and they're all in their lowest-common-denominator mode. (This should work on all IDE controllers and drives made in the last decade.)
| elwood75 wrote: | | DMA is supposed to be on, wonder whats going on here. |
It's probable that /etc/init.d/hdparm wasn't started.
| elwood75 wrote: | | But that shouldn't affect this, if anything, turning DMA off should help if its a performance issue, right? |
Turning off DMA worsens performance but usually improves compatibility/reliability.
Well, I suppose there'd be no harm in enabling the more risky hdparm options, then:
| Code: | | # hdparm -c 3 -d 1 -u 1 /dev/hda |
Doing that affects the way the kernel talks to your hardware, and might have some impact on the situation. The only other thing I can think of is that the BIOS may have some silly incorrect addressing mode setting, but in my experience, Linux usually gets around that anyway.
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elwood75
n00b
Joined: 24 Sep 2003
Posts: 7
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| Posted: Thu Sep 25, 2003 3:17 pm Post subject: |
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Update:
When my e2fsck -c -y finished running, it seemed to complain about two bad blocks and decided to "ignore" them.
I enabled DMA with the hdparm settings you suggested, added hdparm via rc-update, and proceeded to try to fill up my disk. I gave up at 80 gigs, well beyond my previous thresholds.
More google searches pointed to bad cables, possibly blown chipsets, etc, but I haven't had to resort to researching those problems.
Everything looks good, thanks for the help! 
Brad |
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