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I don't see how the patch your +>bisect led you to could cause the problem, since all it does is expand +>the minor version array on the server. Your client doesn't have NFSD +>enabled, so this code shouldn't even be affecting it. +> +>A few questions: what is your /etc/exports on the server? What +>version of NFS are you using for nfsroot? +> +>Thanks! +>Anna +> +>On Wed, Sep 25, 2013 at 1:19 AM, Jongman Heo wrote: +>> +>> Hi all, +>> +>> My embedded development box fails to NFS-boot with NFS server which uses recent kernel. +>> +>> Using git bisect, I found it is caused by commit 4bdc33ed ("NFSDv4.2: Add NFS v4.2 support to the NFS server"). +>> +>> +>> 1. dmesg (NFS boot failure case) +>> +>> ... +>> [ 2.040893] ADDRCONF(NETDEV_UP): eth0: link is not ready +>> [ 2.046207] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX +>> [ 2.053570] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready +>> [ 3.055023] IP-Config: Guessing netmask 255.255.0.0 +>> [ 3.059979] IP-Config: Gateway not on directly connected network. +>> [ 3.066330] Looking up port of RPC 100003/2 on 165.213.88.249 +>> [ 3.074001] Looking up port of RPC 100005/1 on 165.213.88.249 +>> [ 3.122878] VFS: Unable to mount root fs via NFS, trying floppy. +>> [ 3.129134] VFS: Cannot open root device "nfs" or unknown-block(2,0) +>> [ 3.135478] Please append a correct "root=" boot option; here are the available partitions: +>> [ 3.143831] 1f00 3072 mtdblock0 (driver?) +>> [ 3.148798] 1f01 64 mtdblock1 (driver?) +>> [ 3.153758] 1f02 64 mtdblock2 (driver?) +>> [ 3.158719] 1f03 64 mtdblock3 (driver?) +>> [ 3.163682] 1f04 64 mtdblock4 (driver?) +>> [ 3.168644] 1f05 64 mtdblock5 (driver?) +>> [ 3.173607] 1f06 64 mtdblock6 (driver?) +>> [ 3.178568] 0800 488386584 sda driver: sd +>> [ 3.183099] 0801 506016 sda1 +>> [ 3.186927] 0802 4008217 sda2 +>> [ 3.190755] 0803 483869767 sda3 +>> [ 3.194584] b300 1880064 mmcblk0 driver: mmcblk +>> [ 3.199802] b301 4096 mmcblk0p1 +>> [ 3.204063] b302 102400 mmcblk0p2 +>> [ 3.208330] b303 4096 mmcblk0p3 +>> [ 3.212594] b304 1 mmcblk0p4 +>> [ 3.216855] b305 2048 mmcblk0p5 +>> [ 3.221116] b306 2048 mmcblk0p6 +>> [ 3.225382] b307 2048 mmcblk0p7 +>> [ 3.229644] b308 4096 mmcblk0p8 +>> [ 3.233906] b309 12288 mmcblk0p9 +>> [ 3.238176] b30a 16384 mmcblk0p10 +>> [ 3.242524] b30b 142336 mmcblk0p11 +>> [ 3.246869] b30c 1572864 mmcblk0p12 +>> [ 3.251219] b320 12288 mmcblk0gp1 (driver?) +>> [ 3.256272] b310 12288 mmcblk0gp0 (driver?) +>> [ 3.261320] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0) +>> [ 3.269566] Pid: 1, comm: swapper Not tainted 2.6.35 #1 +>> [ 3.274776] Call Trace: +>> [ 3.277232] [<80d0db5b>] ? printk+0x1e/0x20 +>> [ 3.281492] [<80d0dad1>] panic+0x65/0xd1 +>> [ 3.285495] [<80eb9ce3>] mount_block_root+0x125/0x1be +>> [ 3.290631] [<809d1f6d>] ? sys_mknod+0x2d/0x30 +>> [ 3.295156] [<80eb9f6d>] mount_root+0xd0/0xf2 +>> [ 3.299591] [<80eba0d9>] prepare_namespace+0x14a/0x184 +>> [ 3.304803] [<809c44f6>] ? sys_access+0x26/0x30 +>> [ 3.309411] [<80eb9a4e>] kernel_init+0x25e/0x26e +>> [ 3.314105] [<80eb97f0>] ? kernel_init+0x0/0x26e +>> [ 3.318800] [<80903242>] kernel_thread_helper+0x6/0x10 +>> +>> +>> 2. Client (my embedded box) configuration +>> It's kernel 2.6.35 based, and has following NFS kernel configs. +>> +>> # grep NFS .config +>> CONFIG_NFS_FS=y +>> CONFIG_NFS_V3=y +>> CONFIG_NFS_V3_ACL=y +>> CONFIG_NFS_V4=y +>> # CONFIG_NFS_V4_1 is not set +>> CONFIG_ROOT_NFS=y +>> # CONFIG_NFSD is not set +>> CONFIG_NFS_ACL_SUPPORT=y +>> CONFIG_NFS_COMMON=y +>> +>> +>> 3. Server (NFSD) configuration +>> Fedora 19 + latest linus git kernel 3.12.0-rc2+ (commit 22356f44, mm: Place preemption point in do_mlockall() loop) +>> +>> +>> 4. workaround +>> +>> Reverting the commit 4bdc33ed resolves my issue, NFS boot is working then. +>> I've done git bisect, but lost the resulting bisect log due to sudden power loss :(. +>> +>> Best regards, +>> Jongman Heo +> +> +> + +Hi, + +Please see my e-mail reply to J. Bruce Fields for the detail. + +Thanks, +Jongman Heo.ÿôèº{.nÇ+‰·Ÿ®‰†+%ŠËÿ±éݶ\x17¥Šwÿº{.nÇ+‰·¥Š{±þG«éÿŠ{ayº\x1dʇڙë,j\a¢f£¢·hšïêÿ‘êçz_è®\x03(階ŠÝ¢j"ú\x1a¶^[m§ÿÿ¾\a«þG«éÿ¢¸?™¨èÚ&£ø§~á¶iO•æ¬z·švØ^\x14\x04\x1a¶^[m§ÿÿÃ\fÿ¶ìÿ¢¸?–I¥ diff --git a/a/content_digest b/N1/content_digest index b0ea426..9341efe 100644 --- a/a/content_digest +++ b/N1/content_digest @@ -6,90 +6,128 @@ " linux-kernel@vger.kernel.org <linux-kernel@vger.kernel.org>\0" "\00:1\0" "b\0" - "Pg0KPi0tLS0tLS0gT3JpZ2luYWwgTWVzc2FnZSAtLS0tLS0tDQo+DQo+U2VuZGVyIDogQW5uYSBT\n" - "Y2h1bWFrZXI8c2NodW1ha2VyLmFubmFAZ21haWwuY29tPg0KPg0KPkRhdGUgOiAyMDEzLTA5LTI1\n" - "IDIyOjUyIChHTVQrMDk6MDApDQo+DQo+VGl0bGUgOiBSZTogUmVncmVzc2lvbiBjYXVzZWQgYnkg\n" - "Y29tbWl0IDRiZGMzM2VkICgiTkZTRHY0LjI6IEFkZCBORlMgdjQuMiBzdXBwb3J0IHRvIHRoZSBO\n" - "RlMgc2VydmVyIikNCj4NCj4NCj4NCj5IaSBKb25nbWFuLA0KPg0KPklzIHRoZSBwYW5pYyBvbiB5\n" - "b3VyIGNsaWVudCBvciBzZXJ2ZXI/ICBJIGRvbid0IHNlZSBob3cgdGhlIHBhdGNoIHlvdXINCj5i\n" - "aXNlY3QgbGVkIHlvdSB0byBjb3VsZCBjYXVzZSB0aGUgcHJvYmxlbSwgc2luY2UgYWxsIGl0IGRv\n" - 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I don't see how the patch your\n" + ">bisect led you to could cause the problem, since all it does is expand\n" + ">the minor version array on the server. Your client doesn't have NFSD\n" + ">enabled, so this code shouldn't even be affecting it.\n" + ">\n" + ">A few questions: what is your /etc/exports on the server? What\n" + ">version of NFS are you using for nfsroot?\n" + ">\n" + ">Thanks!\n" + ">Anna\n" + ">\n" + ">On Wed, Sep 25, 2013 at 1:19 AM, Jongman Heo wrote:\n" + ">>\n" + ">> Hi all,\n" + ">>\n" + ">> My embedded development box fails to NFS-boot with NFS server which uses recent kernel.\n" + ">>\n" + ">> Using git bisect, I found it is caused by commit 4bdc33ed (\"NFSDv4.2: Add NFS v4.2 support to the NFS server\").\n" + ">>\n" + ">>\n" + ">> 1. dmesg (NFS boot failure case)\n" + ">>\n" + ">> ...\n" + ">> [ 2.040893] ADDRCONF(NETDEV_UP): eth0: link is not ready\n" + ">> [ 2.046207] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX\n" + ">> [ 2.053570] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready\n" + ">> [ 3.055023] IP-Config: Guessing netmask 255.255.0.0\n" + ">> [ 3.059979] IP-Config: Gateway not on directly connected network.\n" + ">> [ 3.066330] Looking up port of RPC 100003/2 on 165.213.88.249\n" + ">> [ 3.074001] Looking up port of RPC 100005/1 on 165.213.88.249\n" + ">> [ 3.122878] VFS: Unable to mount root fs via NFS, trying floppy.\n" + ">> [ 3.129134] VFS: Cannot open root device \"nfs\" or unknown-block(2,0)\n" + ">> [ 3.135478] Please append a correct \"root=\" boot option; here are the available partitions:\n" + ">> [ 3.143831] 1f00 3072 mtdblock0 (driver?)\n" + ">> [ 3.148798] 1f01 64 mtdblock1 (driver?)\n" + ">> [ 3.153758] 1f02 64 mtdblock2 (driver?)\n" + ">> [ 3.158719] 1f03 64 mtdblock3 (driver?)\n" + ">> [ 3.163682] 1f04 64 mtdblock4 (driver?)\n" + ">> [ 3.168644] 1f05 64 mtdblock5 (driver?)\n" + ">> [ 3.173607] 1f06 64 mtdblock6 (driver?)\n" + ">> [ 3.178568] 0800 488386584 sda driver: sd\n" + ">> [ 3.183099] 0801 506016 sda1\n" + ">> [ 3.186927] 0802 4008217 sda2\n" + ">> [ 3.190755] 0803 483869767 sda3\n" + ">> [ 3.194584] b300 1880064 mmcblk0 driver: mmcblk\n" + ">> [ 3.199802] b301 4096 mmcblk0p1\n" + ">> [ 3.204063] b302 102400 mmcblk0p2\n" + ">> [ 3.208330] b303 4096 mmcblk0p3\n" + ">> [ 3.212594] b304 1 mmcblk0p4\n" + ">> [ 3.216855] b305 2048 mmcblk0p5\n" + ">> [ 3.221116] b306 2048 mmcblk0p6\n" + ">> [ 3.225382] b307 2048 mmcblk0p7\n" + ">> [ 3.229644] b308 4096 mmcblk0p8\n" + ">> [ 3.233906] b309 12288 mmcblk0p9\n" + ">> [ 3.238176] b30a 16384 mmcblk0p10\n" + ">> [ 3.242524] b30b 142336 mmcblk0p11\n" + ">> [ 3.246869] b30c 1572864 mmcblk0p12\n" + ">> [ 3.251219] b320 12288 mmcblk0gp1 (driver?)\n" + ">> [ 3.256272] b310 12288 mmcblk0gp0 (driver?)\n" + ">> [ 3.261320] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)\n" + ">> [ 3.269566] Pid: 1, comm: swapper Not tainted 2.6.35 #1\n" + ">> [ 3.274776] Call Trace:\n" + ">> [ 3.277232] [<80d0db5b>] ? printk+0x1e/0x20\n" + ">> [ 3.281492] [<80d0dad1>] panic+0x65/0xd1\n" + ">> [ 3.285495] [<80eb9ce3>] mount_block_root+0x125/0x1be\n" + ">> [ 3.290631] [<809d1f6d>] ? sys_mknod+0x2d/0x30\n" + ">> [ 3.295156] [<80eb9f6d>] mount_root+0xd0/0xf2\n" + ">> [ 3.299591] [<80eba0d9>] prepare_namespace+0x14a/0x184\n" + ">> [ 3.304803] [<809c44f6>] ? sys_access+0x26/0x30\n" + ">> [ 3.309411] [<80eb9a4e>] kernel_init+0x25e/0x26e\n" + ">> [ 3.314105] [<80eb97f0>] ? kernel_init+0x0/0x26e\n" + ">> [ 3.318800] [<80903242>] kernel_thread_helper+0x6/0x10\n" + ">>\n" + ">>\n" + ">> 2. Client (my embedded box) configuration\n" + ">> It's kernel 2.6.35 based, and has following NFS kernel configs.\n" + ">>\n" + ">> # grep NFS .config\n" + ">> CONFIG_NFS_FS=y\n" + ">> CONFIG_NFS_V3=y\n" + ">> CONFIG_NFS_V3_ACL=y\n" + ">> CONFIG_NFS_V4=y\n" + ">> # CONFIG_NFS_V4_1 is not set\n" + ">> CONFIG_ROOT_NFS=y\n" + ">> # CONFIG_NFSD is not set\n" + ">> CONFIG_NFS_ACL_SUPPORT=y\n" + ">> CONFIG_NFS_COMMON=y\n" + ">>\n" + ">>\n" + ">> 3. Server (NFSD) configuration\n" + ">> Fedora 19 + latest linus git kernel 3.12.0-rc2+ (commit 22356f44, mm: Place preemption point in do_mlockall() loop)\n" + ">>\n" + ">>\n" + ">> 4. workaround\n" + ">>\n" + ">> Reverting the commit 4bdc33ed resolves my issue, NFS boot is working then.\n" + ">> I've done git bisect, but lost the resulting bisect log due to sudden power loss :(.\n" + ">>\n" + ">> Best regards,\n" + ">> Jongman Heo\n" + ">\n" + ">\n" + ">\n" + "\n" + "Hi,\n" + "\n" + "Please see my e-mail reply to J. Bruce Fields for the detail.\n" + "\n" + "Thanks,\n" + "Jongman Heo.\303\277\303\264\303\250\302\272{.n\303\207+\302\211\302\267\302\237\302\256\302\211\302\255\302\206+%\302\212\303\213\303\277\302\261\303\251\303\235\302\266\027\302\245\302\212w\303\277\302\272{.n\303\207+\302\211\302\267\302\245\302\212{\302\261\303\276G\302\253\302\235\303\251\303\277\302\212{ay\302\272\035\303\212\302\207\303\232\302\231\303\253,j\a\302\255\302\242f\302\243\302\242\302\267h\302\232\302\217\303\257\302\201\303\252\303\277\302\221\303\252\303\247z_\303\250\302\256\003(\302\255\303\251\302\232\302\216\302\212\303\235\302\242j\"\302\235\303\272\032\302\266\033m\302\247\303\277\303\277\302\276\a\302\253\303\276G\302\253\302\235\303\251\303\277\302\242\302\270?\302\231\302\250\303\250\302\255\303\232&\302\243\303\270\302\247~\302\217\303\241\302\266iO\302\225\303\246\302\254z\302\267\302\232v\303\230^\024\004\032\302\266\033m\302\247\303\277\303\277\303\203\f\303\277\302\266\303\254\303\277\302\242\302\270?\302\226I\302\245" -3fad178d849c2f86b8553d3afae45ad71c0a46a1dc823edec7cd0780f892ad07 +c7b69673852c5acbdaa02fc4f22b7632e59bf717b046c1f5d0899912294b408c
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