Package: hdparm Version: 6.3-3 Severity: wishlist Tags: patch Please apply the attached patch. It groups the variuos options of hdparm into logical sections.
-- System Information: Debian Release: testing/unstable APT prefers unstable APT policy: (500, 'unstable') Architecture: i386 (i686) Shell: /bin/sh linked to /bin/bash Kernel: Linux 2.6.16jh Locale: [EMAIL PROTECTED], [EMAIL PROTECTED] (charmap=ISO-8859-15) Versions of packages hdparm depends on: ii libc6 2.3.6-4 GNU C Library: Shared libraries an ii lsb-base 3.0-16 Linux Standard Base 3.0 init scrip hdparm recommends no packages. -- no debconf information
--- hdparm.8.old 2006-03-31 20:06:32.319368250 +0200 +++ hdparm.8 2006-03-31 22:28:55.881307500 +0200 @@ -15,6 +15,157 @@ When no flags are given, .I -acdgkmnru is assumed. + +.TP +.SH Show information on hard disk + +.TP +.I -C +Check the current IDE power mode status, which will always be one of +.B unknown +(drive does not support this command), +.B active/idle +(normal operation), +.B standby +(low power mode, drive has spun down), +or +.B sleeping +(lowest power mode, drive is completely shut down). +The +.B -S, -y, -Y, +and +.B -Z +flags can be used to manipulate the IDE power modes. + +.TP +.I -g +Display the drive geometry (cylinders, heads, sectors), +the size (in sectors) of the device, +and the starting offset (in sectors) of the device from +the beginning of the drive. +.TP +.I -i +Display the identification info that was obtained from the drive at +.I boot time, +if available. +This is a feature of modern IDE drives, +and may not be supported by older devices. +The data returned may or may not be current, depending on activity +since booting the system. +However, the current multiple sector mode count is always shown. +For a more detailed interpretation of the identification info, +refer to +.I AT Attachment Interface for Disk Drives +(ANSI ASC X3T9.2 working draft, revision 4a, April 19/93). + +.TP +.I -I +Request identification info directly from the drive, +which is displayed in a new expanded format with considerably +more detail than with the older +.I -i +flag. + +.TP +.I -Istdin +This is a special "no seatbelts" variation on the +.B -I +option, +which accepts a drive identification block as standard input +instead of using a /dev/hd* parameter. +The format of this block must be +.I exactly +the same as that found in the /proc/ide/*/hd*/identify "files", +or that produced by the +.B -Istdout +option described below. +This variation is designed for use with collected "libraries" of drive +identification information, and can also be used on ATAPI +drives which may give media errors with the standard mechanism. +.TP +.I -Istdout +This option simply dumps the identify data in hex to stdout, +in a format similar to that from /proc/, and suitable for +later use with the +.I -Istdin +option. + + +.TP +.I -v +Display all settings, except -i (same as -acdgkmnru for IDE, -gr for SCSI or +-adgr for XT). This is also the default behaviour when no flags are specified. + + + + +.TP +.SH Power/Noise settings +.TP +.I -A +Disable/enable the IDE drive\'s read-lookahead feature (usually ON by default). +Usage: +.B -A0 +(disable) or +.B -A1 +(enable). + +.TP +.I -M +Get/set Automatic Acoustic Management (AAM) setting. Most modern harddisk drives +have the ability to speed down the head movements to reduce their noise output. +The possible values are between 0 and 254. 128 is the most quiet (and therefore +slowest) setting and 254 the fastest (and loudest). Some drives have only two +levels (quiet / fast), while others may have different levels between 128 and 254. +At the moment, most drives only support 3 options, off, quiet, and fast. +These have been assigned the values 0, 128, and 254 at present, respectively, +but integer space has been incorporated for future expansion, should this change. + +.TP +.I -S +Set the standby (spindown) timeout for the drive. This value is used +by the drive to determine how long to wait (with no disk activity) +before turning off the spindle motor to save power. Under such +circumstances, the drive may take as long as 30 seconds to respond to +a subsequent disk access, though most drives are much quicker. The +encoding of the timeout value is somewhat peculiar. A value of zero +means "timeouts are disabled": the device will not automatically enter +standby mode. Values from 1 to 240 specify multiples of 5 seconds, +yielding timeouts from 5 seconds to 20 minutes. Values from 241 to +251 specify from 1 to 11 units of 30 minutes, yielding timeouts from +30 minutes to 5.5 hours. A value of 252 signifies a timeout of 21 +minutes. A value of 253 sets a vendor-defined timeout period between 8 +and 12 hours, and the value 254 is reserved. 255 is interpreted as 21 +minutes plus 15 seconds. Note that some older drives may have very +different interpretations of these values. +.TP +.I -y +Force an IDE drive to immediately enter the low power consumption +.B standby +mode, usually causing it to spin down. +The current power mode status can be checked using the +.B -C +flag. +.TP +.I -Y +Force an IDE drive to immediately enter the lowest power consumption +.B sleep +mode, causing it to shut down completely. A hard or soft reset +is required before the drive can be accessed again +(the Linux IDE driver will automatically handle issuing a reset if/when needed). +The current power mode status can be checked using the +.B -C +flag. +.TP +.I -Z +Disable the automatic power-saving function of certain Seagate drives +(ST3xxx models?), to prevent them from idling/spinning-down +at inconvenient times. + + + +.TP +.SH Modify Settings of hard disk .TP .I -a Get/set sector count for filesystem read-ahead. This is used to improve @@ -27,14 +178,6 @@ Also, many IDE drives also have a separate built-in read-ahead function, which alleviates the need for a filesystem read-ahead in many situations. .TP -.I -A -Disable/enable the IDE drive\'s read-lookahead feature (usually ON by default). -Usage: -.B -A0 -(disable) or -.B -A1 -(enable). -.TP .I -b Get/set bus state. .TP @@ -61,23 +204,6 @@ interface card only; all (E)IDE drives still have only a 16-bit connection over the ribbon cable from the interface card. .TP -.I -C -Check the current IDE power mode status, which will always be one of -.B unknown -(drive does not support this command), -.B active/idle -(normal operation), -.B standby -(low power mode, drive has spun down), -or -.B sleeping -(lowest power mode, drive is completely shut down). -The -.B -S, -y, -Y, -and -.B -Z -flags can be used to manipulate the IDE power modes. -.TP .I -d Disable/enable the "using_dma" flag for this drive. This option now works with most combinations of drives and PCI interfaces which support DMA @@ -114,58 +240,6 @@ .I -T timings. .TP -.I -g -Display the drive geometry (cylinders, heads, sectors), -the size (in sectors) of the device, -and the starting offset (in sectors) of the device from -the beginning of the drive. -.TP -.I -h -Display terse usage information (help). -.TP -.I -i -Display the identification info that was obtained from the drive at -.I boot time, -if available. -This is a feature of modern IDE drives, -and may not be supported by older devices. -The data returned may or may not be current, depending on activity -since booting the system. -However, the current multiple sector mode count is always shown. -For a more detailed interpretation of the identification info, -refer to -.I AT Attachment Interface for Disk Drives -(ANSI ASC X3T9.2 working draft, revision 4a, April 19/93). -.TP -.I -I -Request identification info directly from the drive, -which is displayed in a new expanded format with considerably -more detail than with the older -.I -i -flag. -.TP -.I -Istdin -This is a special "no seatbelts" variation on the -.B -I -option, -which accepts a drive identification block as standard input -instead of using a /dev/hd* parameter. -The format of this block must be -.I exactly -the same as that found in the /proc/ide/*/hd*/identify "files", -or that produced by the -.B -Istdout -option described below. -This variation is designed for use with collected "libraries" of drive -identification information, and can also be used on ATAPI -drives which may give media errors with the standard mechanism. -.TP -.I -Istdout -This option simply dumps the identify data in hex to stdout, -in a format similar to that from /proc/, and suitable for -later use with the -.I -Istdin -option. .TP .I -k Get/set the keep_settings_over_reset flag for the drive. @@ -231,16 +305,6 @@ Under rare circumstances, such failures can result in .B massive filesystem corruption. .TP -.I -M -Get/set Automatic Acoustic Management (AAM) setting. Most modern harddisk drives -have the ability to speed down the head movements to reduce their noise output. -The possible values are between 0 and 254. 128 is the most quiet (and therefore -slowest) setting and 254 the fastest (and loudest). Some drives have only two -levels (quiet / fast), while others may have different levels between 128 and 254. -At the moment, most drives only support 3 options, off, quiet, and fast. -These have been assigned the values 0, 128, and 254 at present, respectively, -but integer space has been incorporated for future expansion, should this change. -.TP .I -n Get or set the "ignore write errors" flag in the driver. Do NOT play with this without grokking the driver source code first. @@ -265,19 +329,6 @@ Set the maximum sector count for the drive\'s internal prefetch mechanism. Not all drives support this feature. .TP -.I -q -Handle the next flag quietly, suppressing normal output. This is useful -for reducing screen clutter when running from system startup scripts. -Not applicable to the -.I -i -or -.I -v -or -.I -t -or -.I -T -flags. -.TP .I -Q Set tagged queue depth (1 or greater), or turn tagged queuing off (0). This only works with the newer 2.5.xx (or later) kernels, and only with @@ -293,59 +344,6 @@ .B -U option for more information. .TP -.I -S -Set the standby (spindown) timeout for the drive. This value is used -by the drive to determine how long to wait (with no disk activity) -before turning off the spindle motor to save power. Under such -circumstances, the drive may take as long as 30 seconds to respond to -a subsequent disk access, though most drives are much quicker. The -encoding of the timeout value is somewhat peculiar. A value of zero -means "timeouts are disabled": the device will not automatically enter -standby mode. Values from 1 to 240 specify multiples of 5 seconds, -yielding timeouts from 5 seconds to 20 minutes. Values from 241 to -251 specify from 1 to 11 units of 30 minutes, yielding timeouts from -30 minutes to 5.5 hours. A value of 252 signifies a timeout of 21 -minutes. A value of 253 sets a vendor-defined timeout period between 8 -and 12 hours, and the value 254 is reserved. 255 is interpreted as 21 -minutes plus 15 seconds. Note that some older drives may have very -different interpretations of these values. -.TP -.I -T -Perform timings of cache reads for benchmark and comparison purposes. -For meaningful results, this operation should be repeated 2-3 times -on an otherwise inactive system (no other active processes) with at -least a couple of megabytes of free memory. This displays the speed -of reading directly from the Linux buffer cache without disk access. -This measurement is essentially an indication of the throughput of the -processor, cache, and memory of the system under test. -If the -.I -t -flag is also specified, then a correction factor based on the outcome of -.I -T -will be incorporated into the result reported for the -.I -t -operation. -.TP -.I -t -Perform timings of device reads for benchmark and comparison purposes. -For meaningful results, this operation should be repeated 2-3 times on -an otherwise inactive system (no other active processes) with at least a -couple of megabytes of free memory. This displays the speed of reading -through the buffer cache to the disk without any prior caching of data. -This measurement is an indication of how fast the drive can sustain -sequential data reads under Linux, without any filesystem overhead. To -ensure accurate measurements, the buffer cache is flushed during the -processing of -.I -t -using the BLKFLSBUF ioctl. -If the -.I -T -flag is also specified, then a correction factor based on the outcome of -.I -T -will be incorporated into the result reported for the -.I -t -operation. -.TP .I -u Get/set interrupt-unmask flag for the drive. A setting of .B 1 @@ -384,15 +382,6 @@ some user-donated scripts for hot-swapping on the UltraBay of a ThinkPad 600E. Use at your own risk. .TP -.I -v -Display all settings, except -i (same as -acdgkmnru for IDE, -gr for SCSI or --adgr for XT). This is also the default behaviour when no flags are specified. -.TP -.I -w -Perform a device reset (DANGEROUS). Do NOT use this option. -It exists for unlikely situations where a reboot might otherwise be -required to get a confused drive back into a useable state. -.TP .I -W Disable/enable the IDE drive\'s write-caching feature (default state is undeterminable; manufacturer/model specific). @@ -436,33 +425,74 @@ For multiword DMA, the value used is the desired DMA mode number plus 32. for UltraDMA, the value is the desired UltraDMA mode number plus 64. + + + .TP -.I -y -Force an IDE drive to immediately enter the low power consumption -.B standby -mode, usually causing it to spin down. -The current power mode status can be checked using the -.B -C -flag. +.SH Miscelleneous .TP -.I -Y -Force an IDE drive to immediately enter the lowest power consumption -.B sleep -mode, causing it to shut down completely. A hard or soft reset -is required before the drive can be accessed again -(the Linux IDE driver will automatically handle issuing a reset if/when needed). -The current power mode status can be checked using the -.B -C -flag. +.I -h +Display terse usage information (help). +.TP +.I -q +Handle the next flag quietly, suppressing normal output. This is useful +for reducing screen clutter when running from system startup scripts. +Not applicable to the +.I -i +or +.I -v +or +.I -t +or +.I -T +flags. .TP .I -z Force a kernel re-read of the partition table of the specified device(s). .TP -.I -Z -Disable the automatic power-saving function of certain Seagate drives -(ST3xxx models?), to prevent them from idling/spinning-down -at inconvenient times. +.I -T +Perform timings of cache reads for benchmark and comparison purposes. +For meaningful results, this operation should be repeated 2-3 times +on an otherwise inactive system (no other active processes) with at +least a couple of megabytes of free memory. This displays the speed +of reading directly from the Linux buffer cache without disk access. +This measurement is essentially an indication of the throughput of the +processor, cache, and memory of the system under test. +If the +.I -t +flag is also specified, then a correction factor based on the outcome of +.I -T +will be incorporated into the result reported for the +.I -t +operation. +.TP +.I -t +Perform timings of device reads for benchmark and comparison purposes. +For meaningful results, this operation should be repeated 2-3 times on +an otherwise inactive system (no other active processes) with at least a +couple of megabytes of free memory. This displays the speed of reading +through the buffer cache to the disk without any prior caching of data. +This measurement is an indication of how fast the drive can sustain +sequential data reads under Linux, without any filesystem overhead. To +ensure accurate measurements, the buffer cache is flushed during the +processing of +.I -t +using the BLKFLSBUF ioctl. +If the +.I -T +flag is also specified, then a correction factor based on the outcome of +.I -T +will be incorporated into the result reported for the +.I -t +operation. +.TP +.I -w +Perform a device reset (DANGEROUS). Do NOT use this option. +It exists for unlikely situations where a reboot might otherwise be +required to get a confused drive back into a useable state. .TP + + .SH ATA Security Feature Set .PP These switches are DANGEROUS to experiment with, and might not work with every
