tests: fat: fat_fs_api reduce the wipe partition sects

[hakehuang]

As SD partition tables, GPT or MBT, is positioned at the beginning of a device
it is enough to wipe first 64 sectors, of 512 bytes.
Wipe of entire SD card is very slow and unnecessary.

fixes: #84428

[de-nordic]

@hakehuang Can you provide some better commit message? I only understand the second line.
You mean to erase FAT or MBT/GPT only?

[hakehuang]

@hakehuang Can you provide some better commit message? I only understand the second line.
You mean to erase FAT or MBT/GPT only?

@de-nordic , thanks for checking, I update the commit message. it is for GPT as MBT is the first LBA0 in GPT in 128 bytes. and usually 32k is large enough to have all partitions.

[de-nordic]

@hakehuang Can you provide some better commit message? I only understand the second line.
You mean to erase FAT or MBT/GPT only?

@de-nordic , thanks for checking, I update the commit message. it is for GPT as MBT is the first LBA0 in GPT in 128 bytes. and usually 32k is large enough to have all partitions.

May I suggest rephrasing commit message from:

as sd partition including GPT(MBT at LBA0) will no larger than 32K
so only wape 64 sector in 512 byte is enought.
wape all sd card will be very slow, and unnecessary.

to

As SD partition tables, GPT or MBT, is positioned at the beginning of a device
it is enough to wipe first 64 sectors, of 512 bytes.
Wipe of entire SD card is very slow and unnecessary.

?
And change "wape" to "wipe", in commit subject. I do not want FS test to do that thing around any part of a device.

Thanks.

[hakehuang]

to

As SD partition tables, GPT or MBT, is positioned at the beginning of a device
it is enough to wipe first 64 sectors, of 512 bytes.
Wipe of entire SD card is very slow and unnecessary.

? And change "wape" to "wipe", in commit subject. I do not want FS test to do that thing around any part of a device.

@de-nordic updated, thanks a lot for your suggestion.