From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: mdadm Oops on a small ARM system Date: Thu, 14 Jan 2016 12:52:16 +0500 Message-ID: <20160114125216.1286288f@natsu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/GNGkq.7WNKaJwaGh+_Y9Wzk"; protocol="application/pgp-signature" Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/GNGkq.7WNKaJwaGh+_Y9Wzk Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hello, I am trying to run mdadm on an ARM system with 64 MB of RAM. mdadm --assemble --scan results in the following error. mdadm --detail /dev/md4 locks up indefinitely. It is a 2-member degraded RAID1 of 1.5 TB disks, previously created on amd6= 4 PC. I remember mdadm working on this configuration before, maybe not with this = array. In fact the stock OS of the device uses mdadm to provide RAID functionality= too. Currently I am using Debian Wheezy with kernel 3.2.68 and mdadm 3.2.5. Any ideas? [Thu Jan 14 12:37:38 2016] md: md4 stopped. [Thu Jan 14 12:37:38 2016] md: bind [Thu Jan 14 12:37:38 2016] md: raid1 personality registered for level 1 [Thu Jan 14 12:37:38 2016] bio: create slab at 1 [Thu Jan 14 12:37:38 2016] md/raid1:md4: active with 1 out of 2 mirrors [Thu Jan 14 12:37:38 2016] Unable to handle kernel paging request at virtua= l address 01314289 [Thu Jan 14 12:37:38 2016] pgd =3D c2ea8000 [Thu Jan 14 12:37:38 2016] [01314289] *pgd=3D00000000 [Thu Jan 14 12:37:38 2016] Internal error: Oops: 1 [#1] [Thu Jan 14 12:37:38 2016] Modules linked in: raid1 md_mod fuse tcp_illinoi= s ipv6 evdev mv643xx_eth inet_lro lm75 g760a gpio_keys usb_storage ext4 crc= 16 mbcache jbd2 sg sd_mod crc_t10dif sata_mv libata ehci_hcd usbcore scsi_m= od usb_common [Thu Jan 14 12:37:38 2016] CPU: 0 Not tainted (3.2.0-4-orion5x #1 Debia= n 3.2.68-1+deb7u6) [Thu Jan 14 12:37:38 2016] PC is at mddev_bio_destructor+0x4/0xc [md_mod] [Thu Jan 14 12:37:38 2016] LR is at bio_put+0x44/0x48 [Thu Jan 14 12:37:38 2016] pc : [] lr : [] psr: 6= 0000013 [Thu Jan 14 12:37:38 2016] sp : c38dfd10 ip : c38e2044 fp : 00000000 [Thu Jan 14 12:37:38 2016] r10: 00000200 r9 : 00000000 r8 : 00000008 [Thu Jan 14 12:37:38 2016] r7 : 00000001 r6 : 00000010 r5 : f0000009 r4 = : c2f7c724 [Thu Jan 14 12:37:38 2016] r3 : 01314011 r2 : 00000000 r1 : 20000013 r0 = : c2f7c724 [Thu Jan 14 12:37:38 2016] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA = ARM Segment user [Thu Jan 14 12:37:38 2016] Control: a005317f Table: 02ea8000 DAC: 00000015 [Thu Jan 14 12:37:38 2016] Process mdadm (pid: 1777, stack limit =3D 0xc38d= e270) [Thu Jan 14 12:37:38 2016] Stack: (0xc38dfd10 to 0xc38e0000) [Thu Jan 14 12:37:38 2016] fd00: 200000= 13 bf239a50 60000013 00000000 [Thu Jan 14 12:37:38 2016] fd20: c38dfd20 c38dfd20 00000000 c04c1cc0 c326ba= a0 c39db810 00000001 00000000 [Thu Jan 14 12:37:38 2016] fd40: 00000001 bf24232c 00000200 c04c1cc0 000000= 00 00000001 00000008 00000000 [Thu Jan 14 12:37:38 2016] fd60: bf248298 00000000 00000000 c321e7a0 c2d6a0= e0 c39db800 bf23fd90 ad7175da [Thu Jan 14 12:37:38 2016] fd80: 00000008 bf245150 00000000 00000000 000001= 00 c39db898 becfe538 c0290f84 [Thu Jan 14 12:37:38 2016] fda0: bf25c2fc c38dfdb4 ad7175da 00000000 c321ee= 20 c39db800 00000000 c39db810 [Thu Jan 14 12:37:38 2016] fdc0: 00000000 bf25c514 bf23fd90 c39db898 becfe5= 38 bf240060 00000000 c38dfdfc [Thu Jan 14 12:37:38 2016] fde0: c3402c80 c39db810 c2f5e320 c00f35d0 c39db8= 00 c39db800 c39db810 c326baa0 [Thu Jan 14 12:37:38 2016] fe00: c3496ac0 bf2458b0 0000000f 00000000 000000= 00 00000000 00000000 00000000 [Thu Jan 14 12:37:38 2016] fe20: 00000000 00000000 00000000 c39db800 c39db8= 00 00000000 c3496ac0 400c0930 [Thu Jan 14 12:37:38 2016] fe40: c38de000 00000000 becfe538 bf2402c4 400c09= 30 c39db800 00000000 bf241878 [Thu Jan 14 12:37:38 2016] fe60: 00000002 00000008 00000003 00000000 000000= 06 c00f9330 c2e79a40 c3869508 [Thu Jan 14 12:37:38 2016] fe80: c397b428 c397b428 c2cd0f00 c2e79a40 c397b4= 28 c2cd0f00 c3869508 00000000 [Thu Jan 14 12:37:38 2016] fea0: c397b428 c00fab20 00000000 c3496ac0 c2fbf4= 00 400c0930 0000009f c38de000 [Thu Jan 14 12:37:38 2016] fec0: 00000000 c015ebc0 00000000 c015f514 000000= d0 c38dff78 bf0b8a70 c2e27800 [Thu Jan 14 12:37:38 2016] fee0: c2e27800 c3496ac0 c3402c90 bf000fbc 000000= 07 bf0c94c8 c2d1de00 00000000 [Thu Jan 14 12:37:38 2016] ff00: c3267e38 00000004 00000004 00000000 c38de0= 00 00000000 becfe538 c00d609c [Thu Jan 14 12:37:38 2016] ff20: c3402740 00000000 0000009f c2e7ac00 c34027= 50 bf0c96f8 c3402c80 c00f2e88 [Thu Jan 14 12:37:38 2016] ff40: c2f5e320 c2e8fe58 c2f5e320 c2e8fe58 200000= 13 c2f5e320 c2e8fe58 c00c8bc4 [Thu Jan 14 12:37:38 2016] ff60: 00000000 c32da1c0 00000000 400c0930 000000= 04 00000000 c38de000 00000000 [Thu Jan 14 12:37:38 2016] ff80: becfe538 c00d616c 00000004 00000000 016d19= 08 00000001 00000000 00000036 [Thu Jan 14 12:37:38 2016] ffa0: c0012388 c00121e0 016d1908 00000001 000000= 04 400c0930 00000000 00000000 [Thu Jan 14 12:37:38 2016] ffc0: 016d1908 00000001 00000000 00000036 000000= 01 0000000a 016d27c0 becfe538 [Thu Jan 14 12:37:38 2016] ffe0: 00000004 becfe0c8 0001cd44 b6f157ac 600000= 10 00000004 00000000 00000000 [Thu Jan 14 12:37:38 2016] [] (mddev_bio_destructor+0x4/0xc [md_m= od]) from [] (bio_put+0x44/0x48) [Thu Jan 14 12:37:38 2016] [] (bio_put+0x44/0x48) from [] (sync_page_io+0xc0/0xd4 [md_mod]) [Thu Jan 14 12:37:38 2016] [] (sync_page_io+0xc0/0xd4 [md_mod]) f= rom [] (read_sb_page+0xd0/0x17c [md_mod]) [Thu Jan 14 12:37:38 2016] [] (read_sb_page+0xd0/0x17c [md_mod]) = from [] (bitmap_create+0x31c/0x6d4 [md_mod]) [Thu Jan 14 12:37:38 2016] [] (bitmap_create+0x31c/0x6d4 [md_mod]= ) from [] (md_run+0x658/0x8b0 [md_mod]) [Thu Jan 14 12:37:38 2016] [] (md_run+0x658/0x8b0 [md_mod]) from = [] (do_md_run+0xc/0x74 [md_mod]) [Thu Jan 14 12:37:38 2016] [] (do_md_run+0xc/0x74 [md_mod]) from = [] (md_ioctl+0xd94/0x104c [md_mod]) [Thu Jan 14 12:37:38 2016] [] (md_ioctl+0xd94/0x104c [md_mod]) fr= om [] (__blkdev_driver_ioctl+0x1c/0x28) [Thu Jan 14 12:37:38 2016] [] (__blkdev_driver_ioctl+0x1c/0x28) f= rom [] (blkdev_ioctl+0x6ac/0x720) [Thu Jan 14 12:37:38 2016] [] (blkdev_ioctl+0x6ac/0x720) from [] (do_vfs_ioctl+0x504/0x588) [Thu Jan 14 12:37:38 2016] [] (do_vfs_ioctl+0x504/0x588) from [] (sys_ioctl+0x4c/0x6c) [Thu Jan 14 12:37:38 2016] [] (sys_ioctl+0x4c/0x6c) from [] (ret_fast_syscall+0x0/0x2c) [Thu Jan 14 12:37:38 2016] Code: e1a00004 e8bd80f8 bf239938 e5103004 (e5931= 278)=20 [Thu Jan 14 12:37:38 2016] ---[ end trace f3c05bbfe27f5503 ]--- --=20 With respect, Roman --Sig_/GNGkq.7WNKaJwaGh+_Y9Wzk Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlaXU7EACgkQTLKSvz+PZwgNuQCdE/LFKL63tG+wMSnsmu/+onSY sFEAn1ABhIkFgJkWVuCrJH2kbBZPe6/s =wZBw -----END PGP SIGNATURE----- --Sig_/GNGkq.7WNKaJwaGh+_Y9Wzk--