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https://github.com/amadvance/snapraid.git
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Change the default scrub percentage to 15%
This is done to take into account that now synced blocks are scrubbed with priority.
This commit is contained in:
Andrea Mazzoleni
parent
9be125dfb9
commit
7f17d667e6
5 changed files with 32 additions and 35 deletions
3
HISTORY
3
HISTORY
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@ -12,6 +12,9 @@ SnapRAID HISTORY
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the already scrubbed ones.
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This allows to verify as early as possible that the written
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parity during sync is really correct.
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This means that the selected percentage to scrub should take care
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also of the just synced blocks. For this reason the default scrub
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percentage is now increased to the 15%.
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The "status" command reports the amount of scrub necessary to
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ensure to scrub all the synced blocks.
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* The -p, --percentage option supports the new the arguments:
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@ -605,8 +605,8 @@ int state_scrub(struct snapraid_state* state, int percentage, int olderthan)
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if (percentage >= 0) {
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countlimit = md(blockmax, percentage, 100);
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} else {
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/* by default scrub 1/12 of the array */
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countlimit = md(blockmax, 1, 12);
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/* by default scrub 15% of the array (100*3/20=15) */
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countlimit = md(blockmax, 3, 20);
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}
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if (olderthan >= 0) {
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20
snapraid.1
20
snapraid.1
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@ -18,11 +18,11 @@ snapraid [\-c, \-\-conf CONFIG]
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.PD 0
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.PP
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.PD
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[\-p, \-\-percentage PERC] [\-o, \-\-older\-than DAYS]
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[\-p, \-\-percentage PERC|bad|sync|full]
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.PD 0
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.PP
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.PD
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[\-l, \-\-log FILE]
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[\-o, \-\-older\-than DAYS] [\-l, \-\-log FILE]
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.PD 0
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.PP
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.PD
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@ -307,8 +307,8 @@ snapraid scrub
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This command verifies the data in your array comparing it with
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the hash computed in the \[dq]sync\[dq] command.
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.PP
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Every run of the command checks about 12% of the array, but not data newer
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than 10 days.
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Every run of the command checks the 15% of the array, but not data
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already scrubbed in the previous 10 days.
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You can use the \-p, \-\-percentage option to specify a different amount,
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and the \-o, \-\-older\-than option to specify a different age in days.
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For example, to check 5% of the array older than 20 days use:
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@ -774,15 +774,13 @@ The files in the array are NOT modified.
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Scrubs the array, checking for silent or input/output errors in data
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and parity disks.
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.PP
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For each command invocation, the 12% of the array is checked, but
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For each command invocation, the 15% of the array is checked, but
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nothing that was already scrubbed in the last 10 days.
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This means that scrubbing once a week, every bit of data is checked
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at least one time every two months.
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.PP
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You can define a different scrub amount using the \-p, \-\-percentage
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option that takes as argument:
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bad \- Scrub blocks marked bad.
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synch \- Scrub new synced blocks never scrubbed.
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sync \- Scrub new synced blocks never scrubbed.
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full \- Scrub everything.
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0\-100 \- Scrub the exact percentage of blocks.
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.PP
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@ -981,10 +979,10 @@ This option can be used only with \[dq]check\[dq] and \[dq]fix\[dq].
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.TP
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.B \-p, \-\-percentage PERC|bad|sync|full
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Selects the part of the array to process in \[dq]scrub\[dq].
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PERC is a numeric value from 0 to 100, default is 12.
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PERC is a numeric value from 0 to 100, default is 20.
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Instead of a percentage, you can also specify the kind of scrub
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you want: \[dq]bad\[dq] scrubs bad blocks, \[dq]sync\[dq] the synced block
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not yet scrubbed, and \[dq]full\[dq] everything.
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you want: \[dq]bad\[dq] scrubs bad blocks, \[dq]sync\[dq] the blocks not yet
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scrubbed, and \[dq]full\[dq] for everything.
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This option can be used only with \[dq]scrub\[dq].
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.TP
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.B \-o, \-\-older\-than DAYS
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20
snapraid.d
20
snapraid.d
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@ -6,8 +6,8 @@ Synopsis
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: [-f, --filter PATTERN] [-d, --filter-disk NAME]
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: [-m, --filter-missing] [-e, --filter-error]
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: [-a, --audit-only] [-h, --pre-hash] [-i, --import DIR]
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: [-p, --percentage PERC] [-o, --older-than DAYS]
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: [-l, --log FILE]
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: [-p, --percentage PERC|bad|sync|full]
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: [-o, --older-than DAYS] [-l, --log FILE]
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: [-Z, --force-zero] [-E, --force-empty]
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: [-U, --force-uuid] [-D, --force-device]
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: [-N, --force-nocopy] [-F, --force-full]
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@ -171,8 +171,8 @@ Getting Started
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This command verifies the data in your array comparing it with
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the hash computed in the "sync" command.
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Every run of the command checks about 12% of the array, but not data newer
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than 10 days.
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Every run of the command checks the 15% of the array, but not data
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already scrubbed in the previous 10 days.
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You can use the -p, --percentage option to specify a different amount,
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and the -o, --older-than option to specify a different age in days.
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For example, to check 5% of the array older than 20 days use:
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@ -482,15 +482,13 @@ Commands
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Scrubs the array, checking for silent or input/output errors in data
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and parity disks.
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For each command invocation, the 12% of the array is checked, but
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For each command invocation, the 15% of the array is checked, but
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nothing that was already scrubbed in the last 10 days.
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This means that scrubbing once a week, every bit of data is checked
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at least one time every two months.
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You can define a different scrub amount using the -p, --percentage
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option that takes as argument:
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bad - Scrub blocks marked bad.
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synch - Scrub new synced blocks never scrubbed.
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sync - Scrub new synced blocks never scrubbed.
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full - Scrub everything.
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0-100 - Scrub the exact percentage of blocks.
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@ -695,10 +693,10 @@ Options
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-p, --percentage PERC|bad|sync|full
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Selects the part of the array to process in "scrub".
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PERC is a numeric value from 0 to 100, default is 12.
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PERC is a numeric value from 0 to 100, default is 20.
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Instead of a percentage, you can also specify the kind of scrub
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you want: "bad" scrubs bad blocks, "sync" the synced block
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not yet scrubbed, and "full" everything.
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you want: "bad" scrubs bad blocks, "sync" the blocks not yet
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scrubbed, and "full" for everything.
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This option can be used only with "scrub".
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-o, --older-than DAYS
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20
snapraid.txt
20
snapraid.txt
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@ -10,8 +10,8 @@ snapraid [-c, --conf CONFIG]
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[-f, --filter PATTERN] [-d, --filter-disk NAME]
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[-m, --filter-missing] [-e, --filter-error]
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[-a, --audit-only] [-h, --pre-hash] [-i, --import DIR]
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[-p, --percentage PERC] [-o, --older-than DAYS]
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[-l, --log FILE]
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[-p, --percentage PERC|bad|sync|full]
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[-o, --older-than DAYS] [-l, --log FILE]
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[-Z, --force-zero] [-E, --force-empty]
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[-U, --force-uuid] [-D, --force-device]
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[-N, --force-nocopy] [-F, --force-full]
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@ -186,8 +186,8 @@ run the "scrub" command.
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This command verifies the data in your array comparing it with
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the hash computed in the "sync" command.
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Every run of the command checks about 12% of the array, but not data newer
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than 10 days.
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Every run of the command checks the 15% of the array, but not data
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already scrubbed in the previous 10 days.
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You can use the -p, --percentage option to specify a different amount,
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and the -o, --older-than option to specify a different age in days.
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For example, to check 5% of the array older than 20 days use:
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@ -520,15 +520,13 @@ The files in the array are NOT modified.
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Scrubs the array, checking for silent or input/output errors in data
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and parity disks.
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For each command invocation, the 12% of the array is checked, but
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For each command invocation, the 15% of the array is checked, but
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nothing that was already scrubbed in the last 10 days.
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This means that scrubbing once a week, every bit of data is checked
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at least one time every two months.
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You can define a different scrub amount using the -p, --percentage
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option that takes as argument:
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bad - Scrub blocks marked bad.
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synch - Scrub new synced blocks never scrubbed.
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sync - Scrub new synced blocks never scrubbed.
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full - Scrub everything.
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0-100 - Scrub the exact percentage of blocks.
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@ -754,10 +752,10 @@ SnapRAID provides the following options:
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-p, --percentage PERC|bad|sync|full
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Selects the part of the array to process in "scrub".
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PERC is a numeric value from 0 to 100, default is 12.
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PERC is a numeric value from 0 to 100, default is 20.
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Instead of a percentage, you can also specify the kind of scrub
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you want: "bad" scrubs bad blocks, "sync" the synced block
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not yet scrubbed, and "full" everything.
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you want: "bad" scrubs bad blocks, "sync" the blocks not yet
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scrubbed, and "full" for everything.
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This option can be used only with "scrub".
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-o, --older-than DAYS
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