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Clarify about the space holder for Windows

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In Windows we keep 256 MB to avoid warnings.
This commit is contained in:
Andrea Mazzoleni 2016-08-31 22:26:17 +02:00
parent 13aaa949a2
commit 85df40f40d
5 changed files with 18 additions and 24 deletions
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2
HISTORY
View file

@ -10,6 +10,8 @@ SnapRAID HISTORY
line, separated by , (comma).
Note that if this feature is used, the saved content file won't be
read by older SnapRAID versions.
In Windows, 256 MB are left free in each disk to avoid the warning
about full disks.
* Added a new 'hashsize' configuration option. It could be useful in
systems with low memory, to reduce the memory usage.
Note that if this feature is used, the saved content file won't be

1
cmdline/parity.c
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@ -369,6 +369,7 @@ static int parity_handle_fill(struct snapraid_split_handle* split, data_off_t si
return -1;
}
/* note that in Windows ftruncate is really allocating space */
if (ftruncate(spaceholder_f, spaceholder_size) != 0) {
log_fatal("WARNING Failed to resize the space holder file '%s' to %llu bytes.\n", spaceholder_path, spaceholder_size);
log_fatal("Assuming that no more space is available.\n");

13
snapraid.1
View file

@ -1228,13 +1228,16 @@ The parity enables the protection from a single disk
failure, like RAID5.
.PP
You can specify multiples files that should be in different disks.
When the first file cannot grow anymore, the next one is used.
When a file cannot grow anymore, the next one is used.
The total space available must be as big as the biggest data disk in
the array.
.PP
Leaving the parity disks reserved for parity ensures that
it doesn\'t get fragmented, improving the performance.
.PP
In Windows 256 MB are left unused in each disk to avoid the
warning about full disks.
.PP
This option is mandatory and it can be used only one time.
.SS (2,3,4,5,6)\-parity FILE [,FILE] ...
Defines the files to use to store extra parity information.
@ -1257,13 +1260,7 @@ is enabled:
Each parity level requires the precence of all the previous parity
levels.
.PP
You can specify multiples files that should be in different disks.
When the first file cannot grow anymore, the next one is used.
The total space available must be as big as the biggest data disk in
the array.
.PP
Leaving the parity disks reserved for parity ensures that
it doesn\'t get fragmented, improving the performance.
The same considerations of the \'parity\' option apply.
.PP
These options are optional and they can be used only one time.
.SS z\-parity FILE [,FILE] ...

13
snapraid.d
View file

@ -931,13 +931,16 @@ Configuration
failure, like RAID5.
You can specify multiples files that should be in different disks.
When the first file cannot grow anymore, the next one is used.
When a file cannot grow anymore, the next one is used.
The total space available must be as big as the biggest data disk in
the array.
Leaving the parity disks reserved for parity ensures that
it doesn't get fragmented, improving the performance.
In Windows 256 MB are left unused in each disk to avoid the
warning about full disks.
This option is mandatory and it can be used only one time.
(2,3,4,5,6)-parity FILE [,FILE] ...
@ -955,13 +958,7 @@ Configuration
Each parity level requires the precence of all the previous parity
levels.
You can specify multiples files that should be in different disks.
When the first file cannot grow anymore, the next one is used.
The total space available must be as big as the biggest data disk in
the array.
Leaving the parity disks reserved for parity ensures that
it doesn't get fragmented, improving the performance.
The same considerations of the 'parity' option apply.
These options are optional and they can be used only one time.

13
snapraid.txt
View file

@ -997,13 +997,16 @@ The parity enables the protection from a single disk
failure, like RAID5.
You can specify multiples files that should be in different disks.
When the first file cannot grow anymore, the next one is used.
When a file cannot grow anymore, the next one is used.
The total space available must be as big as the biggest data disk in
the array.
Leaving the parity disks reserved for parity ensures that
it doesn't get fragmented, improving the performance.
In Windows 256 MB are left unused in each disk to avoid the
warning about full disks.
This option is mandatory and it can be used only one time.
7.2 (2,3,4,5,6)-parity FILE [,FILE] ...
@ -1023,13 +1026,7 @@ is enabled:
Each parity level requires the precence of all the previous parity
levels.
You can specify multiples files that should be in different disks.
When the first file cannot grow anymore, the next one is used.
The total space available must be as big as the biggest data disk in
the array.
Leaving the parity disks reserved for parity ensures that
it doesn't get fragmented, improving the performance.
The same considerations of the 'parity' option apply.
These options are optional and they can be used only one time.