<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Nur Text Zchn";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.5pt;
font-family:Consolas;}
span.E-MailFormatvorlage17
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.NurTextZchn
{mso-style-name:"Nur Text Zchn";
mso-style-priority:99;
mso-style-link:"Nur Text";
font-family:Consolas;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText><span lang=EN-US>Hi guys,<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>I got today such case:<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> * Kernel 3.8<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> * We are using M29F2G16 NAND chip with 4096 blocks, each has 128k <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> * Configured with CONFIG_MTD_UBI_BEB_LIMIT=100<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> * Our rootfs partition contains 640 EBs<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> * At system start comes following error message:<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:09 (none) kern.notice kernel: [ 0.375000] Creating 6 MTD partitions on "atmel_nand": <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:09 (none) kern.notice kernel: [ 0.375000] 0x000000000000-0x000000020000 : "obsolete_bootstrap"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:09 (none) kern.notice kernel: [ 0.381000] 0x000000020000-0x000000320000 : "kernel_a"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:09 (none) kern.notice kernel: [ 0.386000] 0x000000320000-0x000000620000 : "kernel_b"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:09 (none) kern.notice kernel: [ 0.392000] 0x000000620000-0x000005620000 : "rootfs_a"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:09 (none) kern.notice kernel: [ 0.399000] 0x000005620000-0x00000a620000 : "rootfs_b"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:09 (none) kern.notice kernel: [ 0.406000] 0x00000a620000-0x000020000000 : "config_data"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>...<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.info kernel: [ 0.546000] NET: Registered protocol family 17<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.557000] UBI: attaching mtd3 to ubi0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.info kernel: [ 0.748000] usb 1-2: new high-speed USB device number 2 using atmel-ehci<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.810000] UBI: scanning is finished<o:p></o:p></span></p><p class=MsoPlainText><b><span lang=EN-US style='color:red'>Feb 28 09:23:10 (none) kern.warn kernel: [ 0.821000] UBI warning: print_rsvd_warning: cannot reserve enough PEBs for bad PEB handling, reserved 115, need 400<o:p></o:p></span></b></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.826000] UBI: attached mtd3 (name "rootfs_a", size 80 MiB) to ubi0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.826000] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 129024 bytes<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.826000] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 512<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.826000] UBI: VID header offset: 512 (aligned 512), data offset: 2048<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.826000] UBI: good PEBs: 640, bad PEBs: 0, corrupted PEBs: 0<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.826000] UBI: user volume: 1, internal volumes: 1, max. volumes count: 128<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.826000] UBI: max/mean erase counter: 399/202, WL threshold: 4096, image sequence number: 548304255<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.826000] UBI: available PEBs: 0, total reserved PEBs: 640, PEBs reserved for bad PEB handling: 115<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Feb 28 09:23:10 (none) kern.notice kernel: [ 0.827000] UBI: background thread "ubi_bgt0d" started, PID 288<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>UBI wanted to reserve 400 blocks on MTD with 640. Hm... During debugging I found that mtd_get_device_size() gives the size of whole flash memory back (4096 blocks * 128kB). I guess that I found small error. With micro patch the problem seems to be corrected for my case<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>Thanks a lot,<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Best regards<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Sergey<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p></div></body></html>