Linux-Misc Digest #521, Volume #27 Tue, 3 Apr 01 14:13:03 EDT
Contents:
Re: loopback device (Alexander Elsenaar)
Re: Secure File deletion (Vilmos Soti)
Re: I would like to register a complaint ... ([EMAIL PROTECTED])
Re: change the limit of open files per process (Jeremiah DeWitt Weiner)
Re: dump/restore vs gnu tar (Stefano Ghirlanda)
Re: CDR writing with SCSI emulation stops ppp transfers ("Eric Potter")
Re: I would like to register a complaint ... (Dan Smith)
Re: strange file metamorphose (pirxmcci)
Re: Daylight savings time (Paul Kimoto)
Re: Daylight savings time (Bill Grzanich)
Re: CDR writing with SCSI emulation stops ppp transfers (Esa Tikka)
Re: I would like to register a complaint ... (Bill Unruh)
Re: mem and swap problem ("Taavi Hein")
----------------------------------------------------------------------------
From: Alexander Elsenaar <[EMAIL PROTECTED]>
Subject: Re: loopback device
Date: Tue, 03 Apr 2001 16:12:54 GMT
Peter T. Breuer wrote:
> Alexander Elsenaar <[EMAIL PROTECTED]> wrote:
>
>> Has anyone problems with the loopback device with a 2.4.2 kernel?
>
> It doesn't work in any of the 2.4.*. It was supposed to have been fixed
> by 2.4.3 but I don't know if it happened. Check.
Oops! Sorry, I did not know this!
>
>> I recompiled the kernel without any problems and now I am unable to
>> mount/access a loopback filesystem. The system completely deadlocks! This
>
> Right.
>
>> seemed to be a problem with older kernels but I cannot find any
>
> ?? It's not a problem of 2.2 kernels.
You right. I ment the 2.4.1 kernel.
>
>> registration a this problem with the 2.4.2 kernel.
>
> Mind you, there is always some danger of a vfs lockup against
> localhost.
Yes, i know this. Thanx!
Alexander
------------------------------
Subject: Re: Secure File deletion
From: Vilmos Soti <[EMAIL PROTECTED]>
Date: Tue, 03 Apr 2001 16:42:44 GMT
Jean-David Beyer <[EMAIL PROTECTED]> writes:
> "Peter T. Breuer" wrote:
>>
>> Hugh Potter <[EMAIL PROTECTED]> wrote:
>>> Im a recent convert to Linux. Ld like to be able to
>>> securely delete swap and other temp files in Linux
>>> Mandrake. In Windows I used scorch for the swap file and
>>> eraser for the rest. Any suggestions for linux.
>>
>> man dd. Overwrite it with zeros (then delete it, if appropriate).
>>
> In USA, the department of defense's policy for secure deletion of
> files involves removing the hard drive in question from the machine,
> and shredding the whole thing (a paper shredder will not do it). It
> all depends on just how secure you wish to be.
Here is a method for making sure nobody can read your disk later:
http://people.ce.mediaone.net/bert-hickman/frames/shrinkergallery.html
Vilmos
------------------------------
From: [EMAIL PROTECTED]
Subject: Re: I would like to register a complaint ...
Date: 03 Apr 2001 09:45:08 -0700
KCmaniac <[EMAIL PROTECTED]> writes:
> I realize this isn't the argument clinic, but I would like to register a
> complaint.
>
> There is a very fundemental concept in the DOS/Windows world of being
> able to format a partition, after which you can begin again compiling
> data into that empty but very much functional partition. WHY DOESN'T
> LINUX HAVE AN EQUIVALENT COMMAND/FUNCTION???
>
> Sorry for the big letters but I am now extremely frustrated over Linux's
> apparent inability to clear a partition of all its data and to be able
> to just simply begin again. Instead, it appears that you have to jump
> through a bunch of hoops and all of which I have not yet found.
>
> Without getting into the why's and what for's, formatting a partition in
> the DOS/Windows world is a legimate and useful function when it is the
> desired thing to do.
>
> Is there anybody out there that knows enough about Linux/Unix
> filesystems that can tell me why this function is not available and if
> it is what is it?
...<snip>...
> Is there any body out there who knows enough to give me a workable
> solution. I just can't understand why Linux does not perform this very
> simple yet powerful function over its own filesystem.
>
> Please, please, please. Anybody.
...<snip>...
mkfs for 'make file system' is the equivalent of the format command.
Since in linux the usual file system is ext2fs, a variant of that command,
mke2fs is probably what you really want. If the partition is mounted
I'd unmount it first with the umount command (do a 'man mount' and
'man umount').
There's always a problem when going from one system to another of
'mapping' the way of expressing functionality in one system to another
and sometimes it gets frustrating and then even a fairly simple thing
can sort of break the camel's back of one's patience. The fact that
Unix always had a lot of esoteric names for things and linux has
inherited them doesn't help ('ls' to list files in a directory, 'cd'
to change directories, etc). I remember back in the 80s, when I first
started working with unix, just thumbing through manuals, reading what
one command did after another or one function from the libraries after
another, till I found something that did what I wanted. Now I struggle
on those rare occasions when I go into the DOS/Windows world.
--
Replace ragwind.localdomain with rahul for a working email address
------------------------------
From: Jeremiah DeWitt Weiner <[EMAIL PROTECTED]>
Subject: Re: change the limit of open files per process
Date: 3 Apr 2001 16:56:30 GMT
Sasha Voznesensky <[EMAIL PROTECTED]> wrote:
> Hello everyone,
> I'm looking for a way to change the hard limit of open files per process to
> around 10 000.
> How can I do that?
You may need to change a number of things; 10,000 is rather high.
Check bash's "ulimit -n", the files in /proc/sys/fs, and fs.h and limits.h,
among others, in the kernel source. There's what looks like a pretty good
page at http://industrial-linux.org/ilg/performance.html.
JDW
------------------------------
From: Stefano Ghirlanda <[EMAIL PROTECTED]>
Subject: Re: dump/restore vs gnu tar
Date: 03 Apr 2001 18:57:00 +0200
[EMAIL PROTECTED] (Dave Brown) writes:
> In addition to the other comments, let me add:
>
> dump can backup/restore an unmounted file system. This may be
> important to assure that all files are "in sync". When backing up a
> "hot" file system, it's possible that files are changing while the
> backup is being made.
>
> tar requires that the filesystem be mounted.
But to avoid the problem you mentioned it can be mounted read only.
--
Stefano - Hodie tertio Nonas Apriles MMI est
------------------------------
From: "Eric Potter" <[EMAIL PROTECTED]>
Subject: Re: CDR writing with SCSI emulation stops ppp transfers
Crossposted-To: alt.os.linux.mandrake
Date: Tue, 03 Apr 2001 17:01:47 GMT
In article <3ac92dd8$0$42878$[EMAIL PROTECTED]>, "Dances With
Crows" <[EMAIL PROTECTED]> wrote:
> On Mon, 02 Apr 2001 15:58:38 GMT, Eric Potter staggered into the Black
> Sun and said:
>>This is a weird one, but whenever I write a disk with my IDE CDRW, any
>>downloads via my dial-up modem stop immediately. If I stop writing the
>>CDR, then the download resumes. I have tried this on two different
>>computers, and two different distributions, Mandrake 7.2 and Mandrake
>>8.0b2. I have tried my own kernel builds also. CD writer is set as
>>secondary master. This only seems to occur when using the ide-scsi
>>emulation for atapi CDR's. If I don't load ide-scsi, I can run "cat
>>/dev/hdc > /dev/null" or another such heavy I/O operation without this
>>problem.
>
> How are you writing this CD? cdrecord, or one of its front-ends? And
> do dmesg or /var/log/messages show anything odd happening when you start
> to burn the CD? cdrecord may try to set itself to near-realtime
> priority (nice -19 or so) when it shouldn't. (Check the output of "top"
> while cdrecord is running.) Frontends like XCDRoast may have a switch
> you can flip to make cdrecord run at normal priority. If cdrecord is
> hogging the CPU, then said CPU will be hard-pressed to handle the
> near-constant stream of IRQs that a modem generates.
>
> Also check what "cat /proc/interrupts" says regarding the secondary IDE
> scontroller. Some drives generate a lot more IRQs than others. HTH,
>
Thanks for some good suggestions. I am using cdrecord.
cdrecord -v -dummy speed=8 fs=8m dev=2,0,0 /dev/scd1
It doesn't matter what speed I am using, 2, 4, or 8 I get the same
problem. /var/log/messages shows nothing at all about the problem.
It also doesn't matter where the input file is stored, IDE or SCSI
hard disk or SCSI CDROM. 'Nice' value is 0 for the process, and I am
using a 1 Ghz athlon, so cpu usage is not a problem. Here are IRQs:
CPU0
0: 539582 XT-PIC timer
1: 2103 XT-PIC keyboard
2: 0 XT-PIC cascade
3: 3131334 XT-PIC
7: 0 XT-PIC parport0
10: 2833 XT-PIC ncr53c8xx
11: 49 XT-PIC BusLogic BT-948, es1371
12: 220819 XT-PIC PS/2 Mouse
14: 27372 XT-PIC ide0
15: 2752 XT-PIC ide1
NMI: 0
ERR: 0
Here is dmesg:
Linux version 2.4.3 ([EMAIL PROTECTED]) (gcc version 2.96 20000731
(Linux-Mandrake 8.0 2.96-0.44mdk)) #16 Sat Mar 31 20:16:21 PST 2001
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
BIOS-e820: 0000000000100000 - 000000000fff0000 (usable)
BIOS-e820: 000000000fff3000 - 0000000010000000 (ACPI data)
BIOS-e820: 000000000fff0000 - 000000000fff3000 (ACPI NVS)
On node 0 totalpages: 65520
zone(0): 4096 pages.
zone(1): 61424 pages.
zone(2): 0 pages.
Kernel command line: BOOT_IMAGE=mykernel ro root=306 hdc=ide-scsi
ide_setup: hdc=ide-scsi
Initializing CPU#0
Detected 997.820 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 1992.29 BogoMIPS
Memory: 254496k/262080k available (1210k kernel code, 7196k reserved, 450k data, 228k
init, 0k highmem)
Dentry-cache hash table entries: 32768 (order: 6, 262144 bytes)
Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes)
Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 16384 (order: 5, 131072 bytes)
VFS: Diskquotas version dquot_6.4.0 initialized
CPU: Before vendor init, caps: 0183f9ff c1c7f9ff 00000000, vendor = 2
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 256K (64 bytes/line)
CPU: After vendor init, caps: 0183f9ff c1c7f9ff 00000000 00000000
CPU: After generic, caps: 0183f9ff c1c7f9ff 00000000 00000000
CPU: Common caps: 0183f9ff c1c7f9ff 00000000 00000000
CPU: AMD Athlon(tm) Processor stepping 02
Enabling fast FPU save and restore... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.37 (20001109) Richard Gooch ([EMAIL PROTECTED])
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xfb240, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Bus master Pipeline request disabled
PCI: Disabled enhanced CPU to PCI writes
PCI: Post Write Fail set to Retry
PCI: Using IRQ router VIA [1106/0686] at 00:07.0
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd v1.8
parport0: PC-style at 0x378, irq 7 [PCSPP(,...)]
parport_pc: Via 686A parallel port: io=0x378, irq=7
pty: 256 Unix98 ptys configured
lp0: using parport0 (interrupt-driven).
block: queued sectors max/low 169093kB/56364kB, 512 slots per queue
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 39
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1
ide0: BM-DMA at 0xa000-0xa007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xa008-0xa00f, BIOS settings: hdc:DMA, hdd:DMA
CMD649: IDE controller on PCI bus 00 dev 80
PCI: Found IRQ 10 for device 00:10.0
PCI: The same IRQ used for device 00:0c.0
CMD649: chipset revision 2
CMD649: not 100% native mode: will probe irqs later
ide2: BM-DMA at 0xc800-0xc807, BIOS settings: hde:pio, hdf:pio
ide3: BM-DMA at 0xc808-0xc80f, BIOS settings: hdg:pio, hdh:pio
hda: ST330630A, ATA DISK drive
hdc: PCRW804, ATAPI CD/DVD-ROM drive
hdd: ASUS DVD-ROM E608, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 59777640 sectors (30606 MB) w/2048KiB Cache, CHS=3720/255/63, UDMA(33)
hdd: ATAPI 40X DVD-ROM drive, 128kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.12
Partition check:
hda: hda1 hda2 < hda5 hda6 >
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 706k freed
loop: loaded (max 8 devices)
Serial driver version 5.05 (2000-12-13) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
PPP generic driver version 2.4.1
PPP Deflate Compression module registered
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 203M
agpgart: Detected Via Apollo Pro KT133 chipset
agpgart: AGP aperture is 64M @ 0xd8000000
[drm] AGP 0.99 on VIA Apollo KT133 @ 0xd8000000 64MB
[drm] Initialized radeon 1.0.0 20010105 on minor 63
SCSI subsystem driver Revision: 1.00
PCI: Found IRQ 11 for device 00:0e.0
PCI: The same IRQ used for device 00:0a.0
scsi: ***** BusLogic SCSI Driver Version 2.1.15 of 17 August 1998 *****
scsi: Copyright 1995-1998 by Leonard N. Zubkoff <[EMAIL PROTECTED]>
scsi0: Configuring BusLogic Model BT-948 PCI Ultra SCSI Host Adapter
scsi0: Firmware Version: 5.06J, I/O Address: 0xB400, IRQ Channel: 11/Level
scsi0: PCI Bus: 0, Device: 14, Address: 0xDF002000, Host Adapter SCSI ID: 7
scsi0: Parity Checking: Enabled, Extended Translation: Enabled
scsi0: Synchronous Negotiation: UUFFFFF#, Wide Negotiation: Disabled
scsi0: Disconnect/Reconnect: Enabled, Tagged Queuing: Enabled
scsi0: Scatter/Gather Limit: 128 of 8192 segments, Mailboxes: 211
scsi0: Driver Queue Depth: 211, Host Adapter Queue Depth: 192
scsi0: Tagged Queue Depth: Automatic, Untagged Queue Depth: 3
scsi0: Error Recovery Strategy: Default, SCSI Bus Reset: Enabled
scsi0: SCSI Bus Termination: Enabled, SCAM: Disabled
scsi0: *** BusLogic BT-948 Initialized Successfully ***
scsi0 : BusLogic BT-948
Vendor: SEAGATE Model: ST15150N Rev: 0023
Type: Direct-Access ANSI SCSI revision: 02
Vendor: CONNER Model: CFP2107S 2.14GB Rev: 172B
Type: Direct-Access ANSI SCSI revision: 02
scsi0: Target 0: Queue Depth 28, Synchronous at 10.0 MB/sec, offset 15
scsi0: Target 1: Queue Depth 28, Synchronous at 10.0 MB/sec, offset 15
PCI: Found IRQ 10 for device 00:0c.0
PCI: The same IRQ used for device 00:10.0
ncr53c8xx: at PCI bus 0, device 12, function 0
ncr53c8xx: 53c875J detected with Symbios NVRAM
ncr53c875J-0: rev 0x4 on pci bus 0 device 12 function 0 irq 10
ncr53c875J-0: Symbios format NVRAM, ID 7, Fast-20, Parity Checking
ncr53c875J-0: on-chip RAM at 0xdf000000
ncr53c875J-0: restart (scsi reset).
ncr53c875J-0: Downloading SCSI SCRIPTS.
scsi1 : ncr53c8xx-3.4.3-20010212
Vendor: NEC Model: CD-ROM DRIVE:222 Rev: 3.1k
Type: CD-ROM ANSI SCSI revision: 02
Vendor: PLEXTOR Model: CD-ROM PX-32TS Rev: 1.01
Type: CD-ROM ANSI SCSI revision: 02
scsi2 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: PHILIPS Model: PCRW804 Rev: 2,1
Type: CD-ROM ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
SCSI device sda: 8388315 512-byte hdwr sectors (4295 MB)
sda: sda1
SCSI device sdb: 4194304 512-byte hdwr sectors (2147 MB)
sdb: sdb1 sdb2 sdb3
Detected scsi CD-ROM sr0 at scsi1, channel 0, id 3, lun 0
Detected scsi CD-ROM sr1 at scsi1, channel 0, id 5, lun 0
Detected scsi CD-ROM sr2 at scsi2, channel 0, id 0, lun 0
ncr53c875J-0-<3,*>: FAST-10 SCSI 8.0 MB/s (125 ns, offset 15)
sr0: scsi-1 drive
ncr53c875J-0-<5,*>: FAST-10 SCSI 10.0 MB/s (100 ns, offset 15)
sr1: scsi-1 drive
sr2: scsi3-mmc drive: 32x/32x writer cd/rw xa/form2 cdda tray
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 2048 buckets, 16Kbytes
TCP: Hash tables configured (established 16384 bind 16384)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Mounted root (ext2 filesystem).
fatfs: bogus cluster size
fatfs: bogus cluster size
reiserfs: checking transaction log (device 03:06) ...
Using r5 hash to sort names
reiserfs: using 3.5.x disk format
ReiserFS version 3.6.25
VFS: Mounted root (reiserfs filesystem) readonly.
change_root: old root has d_count=3
Trying to unmount old root ... okay
Freeing unused kernel memory: 228k freed
Adding Swap: 136512k swap-space (priority -1)
Adding Swap: 136544k swap-space (priority -2)
Adding Swap: 1823368k swap-space (priority -3)
es1371: version v0.27 time 20:24:30 Mar 31 2001
es1371: found chip, vendor id 0x1274 device id 0x5880 revision 0x02
PCI: Found IRQ 11 for device 00:0a.0
PCI: The same IRQ used for device 00:0e.0
es1371: found es1371 rev 2 at io 0xac00 irq 11
es1371: features: joystick 0x0
ac97_codec: AC97 Audio codec, id: 0x8384:0x7609 (SigmaTel STAC9721/23)
VFS: Disk change detected on device sr(11,1)
------------------------------
From: Dan Smith <[EMAIL PROTECTED]>
Subject: Re: I would like to register a complaint ...
Date: 03 Apr 2001 10:30:04 -0400
This guy is a dipshit.
I think he just doesn't like the fact that mkfs sounds like 'make' and
not 'remake' or some shit like that.
I think this guy needs a mac :)... That way everything is layed out in
a nice menu somewhere.
I'd like to register a complaint.. about stupid people posting stupid
complaints! :)
------------------------------
From: pirxmcci <[EMAIL PROTECTED]>
Subject: Re: strange file metamorphose
Date: Tue, 3 Apr 2001 19:39:40 +0200
thank you.
pirx
------------------------------
From: [EMAIL PROTECTED] (Paul Kimoto)
Subject: Re: Daylight savings time
Date: 3 Apr 2001 13:38:14 -0500
Reply-To: [EMAIL PROTECTED]
In article <[EMAIL PROTECTED]>,
Bill Grzanich wrote:
> After some research on deja.com, the con[s]ensus seems to be that I must set
> the hardware clock to UTC (GMT), the timezone to America/Central, and
> everything should be fine. So, I tried the following at 4:51pm local time:
>
> hwclock --set --utc --date="4/2/01 21:51:10"
My hwclock(8) man page says:
: --date=date_string
: Specifies the time to which to set the Hardware
: Clock. The value of this option is an argument to
: the date(1) program. For example,
:
: hwclock --set --date="9/22/96 16:45:05"
:
: The argument is in local time, even if you keep
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
: your Hardware Clock in Coordinated Universal time.
: See the --utc option.
> When running the date command, however, I get back UTC time with the CDT
> timezone!
>
> $ date
> Mon Apr 2 21:52:30 CDT 2001
According to the man page (which might be a little confusing), that's what
you told it to do with your "hwclock" command.
> So, I changed things back to the way they were, and now date tells me:
>
> Mon Apr 2 17:04:43 CDT 2001
>
> which is correct.
--
Paul Kimoto
This message was originally posted on Usenet in plain text. Any images,
hyperlinks, or the like shown here have been added without my consent,
and may be a violation of international copyright law.
------------------------------
From: [EMAIL PROTECTED] (Bill Grzanich)
Subject: Re: Daylight savings time
Date: 3 Apr 2001 17:51:22 GMT
[EMAIL PROTECTED] (Paul Kimoto) wrote in
<[EMAIL PROTECTED]>:
>In article <[EMAIL PROTECTED]>,
>Bill Grzanich wrote:
>> After some research on deja.com, the con[s]ensus seems to be that I
>> must set the hardware clock to UTC (GMT), the timezone to
>> America/Central, and everything should be fine. So, I tried the
>> following at 4:51pm local time:
>>
>> hwclock --set --utc --date="4/2/01 21:51:10"
>
>My hwclock(8) man page says:
>
>: --date=date_string
>: Specifies the time to which to set the Hardware
>: Clock. The value of this option is an argument to
>: the date(1) program. For example,
>:
>: hwclock --set --date="9/22/96 16:45:05"
>:
>: The argument is in local time, even if you keep
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>: your Hardware Clock in Coordinated Universal time.
>: See the --utc option.
>
>> When running the date command, however, I get back UTC time with the
>> CDT timezone!
>>
>> $ date
>> Mon Apr 2 21:52:30 CDT 2001
>
>According to the man page (which might be a little confusing), that's
>what you told it to do with your "hwclock" command.
>
>> So, I changed things back to the way they were, and now date tells me:
>>
>> Mon Apr 2 17:04:43 CDT 2001
>>
>> which is correct.
>
Thanks, Paul!
I must have read that man page a half dozen times, without that sinking in.
It works as expected now.
-Bill
------------------------------
From: [EMAIL PROTECTED] (Esa Tikka)
Crossposted-To: alt.os.linux.mandrake
Subject: Re: CDR writing with SCSI emulation stops ppp transfers
Date: 3 Apr 2001 17:17:53 GMT
On Tue, 03 Apr 2001 17:01:47 GMT, Eric Potter <[EMAIL PROTECTED]> wrote:
>
>This is a weird one, but whenever I write a disk with my IDE CDRW, any
>downloads via my dial-up modem stop immediately. If I stop writing the
>CDR, then the download resumes. I have tried this on two different
>computers, and two different distributions, Mandrake 7.2 and Mandrake
>8.0b2. I have tried my own kernel builds also. CD writer is set as
>secondary master. This only seems to occur when using the ide-scsi
>emulation for atapi CDR's. If I don't load ide-scsi, I can run "cat
>/dev/hdc > /dev/null" or another such heavy I/O operation without this
>problem.
It would seem that this is not the case, but still... have you tried
setting unmasqirq=on on your ide drives? (hdparm -u1 /dev/hdx)
Read the man page of hdparm first anyway, there are some warnings worth
noting.
I had similar problems, stressing *any* ide drive caused serial port to
stop transmitting data.
Just grasping straws...
--
Esa Tikka reply address for non-spammers
LTKK/ti4 esa dot tikka at lut dot fi
Vote against spam in EU @ http://www.politik-digital.de/spam
------------------------------
From: [EMAIL PROTECTED] (Bill Unruh)
Subject: Re: I would like to register a complaint ...
Date: 3 Apr 2001 18:02:41 GMT
In <[EMAIL PROTECTED]> KCmaniac <[EMAIL PROTECTED]> writes:
]I realize this isn't the argument clinic, but I would like to register a
]complaint.
You mean you would like to complain, since there is no registry for
complaints.
]There is a very fundemental concept in the DOS/Windows world of being
]able to format a partition, after which you can begin again compiling
]data into that empty but very much functional partition. WHY DOESN'T
]LINUX HAVE AN EQUIVALENT COMMAND/FUNCTION???
?? It does. What is it you want? Do you want to reinstall? Just choose
the "install" option, rather than the update.
Or if you have the partition free from use,
as root
rm -rf /mount_point_ofPartition
will erase everything as would
mkfs /dev/hda5
for example to "reformat" /dev/hda5. or....
Actually it would help if you told us what you wanted to do rather than
assume that the tool is the same as in some other operating system.
(What format does on a fat file ssytem is to recreate and empty FAT
table, that is all-- ie the links to the files are removed similar to
removing the inode tables on a linux system.)
]Sorry for the big letters but I am now extremely frustrated over Linux's
]apparent inability to clear a partition of all its data and to be able
]to just simply begin again. Instead, it appears that you have to jump
]through a bunch of hoops and all of which I have not yet found.
]Without getting into the why's and what for's, formatting a partition in
]the DOS/Windows world is a legimate and useful function when it is the
]desired thing to do.
So is a defragger a legitimate and useful function on a DOS system. It
is not on a Linux system.
Operating systems and file systems differ.
------------------------------
From: "Taavi Hein" <[EMAIL PROTECTED]>
Crossposted-To:
alt.linux,alt.os.linux,comp.os.linux.setup,linux.misc,linux.redhat,linux.redhat.misc,linux.support.commercial,redhat.config,redhat.general
Subject: Re: mem and swap problem
Date: Tue, 3 Apr 2001 00:46:30 +0300
"Gabor Takacs" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]...
: The exact value is 127+change and it does work. It was provided as a
solution to
: this problem. If need the exact value try the external linux.redhat.misc
: newsgroup, that is where I got my info. This solution was applied
successfully
: to v6.x of RedHat and Mandrake.
the exact value of RAM? my machine counts about 130000k+ at boot-time, then
maybe I should specify that number (linux mem=130...k)? Or is it the exact
value someone thinks some other person should specify?
--
Taavi Hein - [EMAIL PROTECTED]
Registered Linux user #209546
Registered Linux machine #97395
------------------------------
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