Hi Experts,
I used following in my script,
I am not sure if below behavior is bug or expected behavior Just to confirm,
parted --script -a optimal /dev/mmcblk0 \
mklabel gpt \
mkpart primary 0% 219s \
mkpart primary 220s 475s \
mkpart primary 476s 731s \
mkpart primary 732s 987s \
mkpart primary 988s 3035s \
mkpart primary 3036s 5083s \
mkpart primary 5084s 6107s \
mkpart primary 6108s 6363s \
mkpart primary 6364s 16603s \
mkpart primary 16604s 26843s \
mkpart primary 26844s 37083s \
mkpart primary 37084s 37595s \
mkpart primary 37596s 38107s \
mkpart primary 38108s 38619s \
mkpart primary 38620s 73403s \
mkpart primary 73404s 483003s \
mkpart primary 483004s 892603s \
mkpart primary 892604s 1097403s \
mkpart primary 1097404s 1220283s \
mkpart primary 1220284s 1629883s \
mkpart primary 1629884s 1701563s \
mkpart primary 1701564s 100%
But I see following message from parted,
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
When I list partitions I see following values
(---------Last column I added to inform that I expected which size size--------)
# parted --list
Model: MMC MMC04G (sd/mmc)
Disk /dev/mmcblk0: 3842MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags Expected
Size(in KB)
1 17.4kB 113kB 95.2kB primary 110
2 113kB 244kB 131kB primary 128
3 244kB 375kB 131kB primary 128
4 375kB 506kB 131kB primary 128
5 506kB 1554kB 1049kB primary 1024
6 1554kB 2603kB 1049kB primary 1024
7 2603kB 3127kB 524kB primary 512
8 3127kB 3258kB 131kB primary 128
9 3258kB 8501kB 5243kB primary 5120
10 8501kB 13.7MB 5243kB primary 5120
11 13.7MB 19.0MB 5243kB primary 5120
12 19.0MB 19.2MB 262kB primary 256
13 19.2MB 19.5MB 262kB primary 256
14 19.5MB 19.8MB 262kB primary 256
15 19.8MB 37.6MB 17.8MB primary 17392
16 37.6MB 247MB 210MB primary 204800
17 247MB 457MB 210MB primary 204800
18 457MB 562MB 105MB primary 102400
19 562MB 625MB 62.9MB primary 61440
20 625MB 835MB 210MB primary 204800
21 835MB 871MB 36.7MB primary 35840
22 871MB 3842MB 2971MB primary 2969600
Could someone explain why parted is not giving partition size which I expected
? Because I had aligned partitions to sector boundaries(sector size 512B).
Any suggestions/pointers/corrections ?
Thank you,
Regards,
Ankur
-----Original Message-----
From: Ankur Tank
Sent: Tuesday, December 15, 2015 3:56 PM
To: 'bug-parted@gnu.org'
Cc: artf...@gmail.com
Subject: Partition alignment using parted
Hi Parted Experts,
I am working on am335x based board.
We are using eMMC and as a storage medium and parted for partitioning eMMC.
I am not able to use "optimal" alignment option with parted when partitioning
eMMC.
I get following error messages when I use "optimal" alignment
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
1. Do we have to worry about this message ?
I have put question on Unix & Linux Stackexchange also below is the link for
the same
http://unix.stackexchange.com/questions/248939/how-to-achieve-optimal-alignment-for-emmc-partition
Now parted reports logical and physical sector size as same.
"Sector size (logical/physical): 512B/512B"
2. Now my question is, is physical size reported by parted is physical sector
size or emulated physical sector size?
3. How can we achieve optimal alignment ? Any suggestions?
Thank you,
Regards,
Ankur
L&T Technology Services Ltd
www.LntTechservices.com<http://www.lnttechservices.com/>
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