-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thu, 03 May 2012 12:04:49 +0300 Nikolay Kichukov <hijacker@xxxxxxxxx> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi all, > I have recently included one more drive in my system and has switched from raid0 to raid10 on 3 devices/partitions. > > I have created the raid as follows: > > mdadm --create /dev/md3 --verbose --raid-devices=3 --level=raid10 --name=cryptdata --layout=o2 --chunk=2M /dev/sda3 > /dev/sdb3 /dev/sdf3 > mdadm: size set to 319434752K > mdadm: Defaulting to version 1.2 metadata > mdadm: array /dev/md3 started. > > > Information about the array: > > mdadm --detail /dev/md3 > /dev/md3: > Version : 1.2 > Creation Time : Thu May 3 11:42:57 2012 > Raid Level : raid10 > Array Size : 479152128 (456.96 GiB 490.65 GB) > Used Dev Size : 319434752 (304.64 GiB 327.10 GB) > Raid Devices : 3 > Total Devices : 3 > Persistence : Superblock is persistent > > Update Time : Thu May 3 11:42:57 2012 > State : clean, resyncing (PENDING) > Active Devices : 3 > Working Devices : 3 > Failed Devices : 0 > Spare Devices : 0 > > Layout : offset=2 > Chunk Size : 2048K > > Name : hanna64:cryptdata (local to host hanna64) > UUID : a7cc8eb7:8555b1bd:2856b686:829861be > Events : 0 > > Number Major Minor RaidDevice State > 0 8 3 0 active sync /dev/sda3 > 1 8 19 1 active sync /dev/sdb3 > 2 8 83 2 active sync /dev/sdf3 > > > And under /proc/mdstat: > > cat /proc/mdstat > Personalities : [raid0] [raid1] [raid10] > md3 : active (auto-read-only) raid10 sdf3[2] sdb3[1] sda3[0] > 479152128 blocks super 1.2 2048K chunks 2 offset-copies [3/3] [UUU] > resync=PENDING > > > The resync was not started due to the array being in auto-read-only mode. > > I googled the issue and found out that to be able to start the resync one should issue: > > mdadm --readwrite /dev/mdx > (ref.: http://wiki.xtronics.com/index.php/Raid ) > > I have done it and it started resyncing: > cat /proc/mdstat > Personalities : [raid0] [raid1] [raid10] > md3 : active raid10 sdf3[2] sdb3[1] sda3[0] > 479152128 blocks super 1.2 2048K chunks 2 offset-copies [3/3] [UUU] > [=>...................] resync = 6.2% (29748096/479152128) finish=120.3min speed=62220K/sec > > > > Is this intended feature for 1.2 metadata? This behaviour isn't a function of 1.2 metadata. It is a function of /sys/module/md_mod/parameters/start_ro which is probably being setting by Debian early in boot because that can be a very sensible thing to do. I should probably get --create to over-ride it (I thought I had, but obviously not). If you write '0' to it, you'll find that the array starts normally. Alternately, just start using the array. As soon as you "mkfs", the array will start resyncing. NeilBrown > > Kernel: 3.1.0-1-amd64 > mdadm: 3.2.3-2 > Distro: Debian testing > > Cheers, > - -Nik > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.12 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iQEcBAEBAgAGBQJPokoxAAoJEDFLYVOGGjgXb3cH/2cnkl+Q0q+vA+8z32XQwD28 > dnpohM0nlQe99in2D1fjkI0Bsnt3tYz0bjZALHxOPybEWH+U3X1WOztTx/UdfKmL > fXTv8hFLscIsdvOK/JThkRdob99EEPbkZlnzCuTrIQDPJSj1v/kY7AG/9HxLCnT+ > 8KDZpkEyd9usSQZC/sUie2B/cG5VDir74sFc/ggr3UsZCFtBGPJuILCjlWAu6XcH > SCV2FTvJt/Ahay3/IuzBvNRBys7OcOFKck/oGGgW2Ki5FUeehWGWbWVbYEiQ4pZR > TPbPwrY84v6OS2Baqm8kZIr8j6UPFzPuErxGqhxq7e+btGx8aKklzbJn3dQCQck= > =IVpx > -----END PGP SIGNATURE----- > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iQIVAwUBT6L3Wznsnt1WYoG5AQJrtxAAvpXk/Gx4Q3vRqk+zsi99qCv8txV96m74 Ace6+FWleF8Uv31f59lK4Asm43CYzSaNrtI/x6NkW/6sLpyHOP6o421r5rgyAB3h UjWkRDGhct2/ONcADuwb92eERvlhnMRRe3wBtX1zlyipghFqpn8Sm2nTZ5sSJMsj ZZPSL9v80EfY0FKeyyTZoEo2gx5CBHAy2HCqNjMaU/KC4FIp+7uG9a9IklfORSnI bHfmhp4hDZdgmX5KLHvX9nvY/etxaaKEl+GJGDRxe1Vm+/qdbJR+Y/0TdGEla+/q zxs7YBT5jrSvnQo0mnwdR3ssfEQcnlUvsW7XSjmSgNSpRxp6Rp+LfkOn5seLEO4e RLhEADnu+4u2Z2F6lOmcJpyP0f3AK40YuQvYYbWt3o/BmaaQ5Zw+N8SbBjjO0fyM k/z6xFsxeqtF/fjFGIGWPFjPQxnTlB9XpJ54TGqi8M3C7kmJr0Zmq35+uN282Oyw IDSs4qxqjB4riVyFkSQ4s2epknjXvOxPH9qirv2B7PolJtEtWSjv29phiMuoDxgM 3c59AAll2D8ulPsvt2sNS0DQ9Ola4oAqE9IjJPwwHfOU07Ji1MQLqm+a6zVAtO5g 2nq6NR+clSPV+meJp5Xb6G+KoHPTkJXPNS1h7KfHtOQyy/rxuz3lW68X55+iGWTe OhwoUZUoWjA= =e5x+ -----END PGP SIGNATURE----- ÿôèº{.nÇ+?·?®??+%?Ëÿ±éݶ¥?wÿº{.nÇ+?·¥?{±þ¶¢wø§¶?¡Ü¨}©?²Æ zÚ&j:+v?¨þø ¯ù ®w¥þ?à2?Þ?¨èÚ&¢)ß¡«a¶Úÿÿûàz¿äz¹Þ?ú+?ù???Ý¢jÿ?wèþf
