Enjoy Slackware 15.0!
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howtos:misc:software_raid_troubleshoot_howto [2016/11/27 11:49 (UTC)] wisedraco [My fall and sucess story] |
howtos:misc:software_raid_troubleshoot_howto [2017/06/26 15:08 (UTC)] wisedraco [Workarounds for incorrect raid devices naming] |
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| <!-- Add your text below. We strongly advise to start with a Headline (see button bar above). --> | <!-- Add your text below. We strongly advise to start with a Headline (see button bar above). --> | ||
| + | |||
| ====== Software RAID troubleshoot ====== | ====== Software RAID troubleshoot ====== | ||
| Line 5: | Line 6: | ||
| i be done with system, who,after lilo menu,\\ | i be done with system, who,after lilo menu,\\ | ||
| write " | write " | ||
| + | \\ | ||
| and then stops completely - nothing more.\\ | and then stops completely - nothing more.\\ | ||
| + | \\ | ||
| Initial configuration was:\\ | Initial configuration was:\\ | ||
| Intel DG965SS motherboard, | Intel DG965SS motherboard, | ||
| 2 x 1000 Gb Seagate SATA HDD ( as sda and sdb)\\ | 2 x 1000 Gb Seagate SATA HDD ( as sda and sdb)\\ | ||
| ST1000DM003-1CH1\\ | ST1000DM003-1CH1\\ | ||
| - | , dvd-writer on sata4 port | + | dvd-writer on sata4 port |
| both seagate discs is partitioned as FD type ( linux autodetect raid) and 4 partitions ( mbr type) - | both seagate discs is partitioned as FD type ( linux autodetect raid) and 4 partitions ( mbr type) - | ||
| - | * 100 Gb root (md1) | + | |
| - | * 2 Gb swap (md2) | + | * 2 Gb swap (md2) |
| - | * 350 Gb /home (md3) | + | * 350 Gb /home (md3) |
| - | * 550 Gb /Second (md4) | + | * 550 Gb /Second (md4) |
| + | \\ | ||
| + | \\ | ||
| cat / | cat / | ||
| Line 37: | Line 40: | ||
| unused devices: < | unused devices: < | ||
| </ | </ | ||
| + | \\ | ||
| + | \\ | ||
| mdadm -Es : | mdadm -Es : | ||
| Line 61: | Line 65: | ||
| Then i do massive system update via slackpkg update-all, including kernel update too.\\ | Then i do massive system update via slackpkg update-all, including kernel update too.\\ | ||
| check lilo.conf, restart - all looks ok. then i decide to upgrade system to 14.2 via the same slackpkg \\ | check lilo.conf, restart - all looks ok. then i decide to upgrade system to 14.2 via the same slackpkg \\ | ||
| - | ( looks like live on macos is too boring, too predictable - all work, and so on...:D ) | + | ( looks like live on macos is too boring, too predictable - all work, and so on...:D )\\ |
| always, i check lilo.conf, check the new kernel is named right, have no old kernel for backup - \\ | always, i check lilo.conf, check the new kernel is named right, have no old kernel for backup - \\ | ||
| only one entry in lilo ( who was not good thing at all! ), and do reboot. | only one entry in lilo ( who was not good thing at all! ), and do reboot. | ||
| Line 327: | Line 331: | ||
| do a | do a | ||
| + | |||
| + | < | ||
| ls / | ls / | ||
| + | </ | ||
| or better, go in that location with midnight commander, and youl see, there is a " | or better, go in that location with midnight commander, and youl see, there is a " | ||
| that was the raid array disk uuid - and symlink to /dev/mdx. | that was the raid array disk uuid - and symlink to /dev/mdx. | ||
| + | |||
| + | for automate info feed into fstab you can use this way: | ||
| + | |||
| + | < | ||
| + | |||
| + | cd / | ||
| + | |||
| + | ls -d -l $PWD/* >> /etc/fstab | ||
| + | </ | ||
| + | |||
| + | after that you must immediately edit /etc/fstab and make in a right way, otherwise you may have problems with mounting in next boot... | ||
| + | |||
| < | < | ||
| Line 346: | Line 365: | ||
| </ | </ | ||
| - | take a note! | + | <note important> |
| disk UUID by | disk UUID by | ||
| Line 352: | Line 371: | ||
| and that one, who you get via | and that one, who you get via | ||
| + | |||
| + | < | ||
| mdadm -D | mdadm -D | ||
| mdadm -Db | mdadm -Db | ||
| mdadm -Es | mdadm -Es | ||
| + | </ | ||
| - | differ! in fstab ( lilo too?) you must use UID from / | + | differ, not the same!!! |
| + | in fstab ( lilo too?) you must use UID from / | ||
| Line 363: | Line 386: | ||
| - 2. Using initramd. | - 2. Using initramd. | ||
| + | < | ||
| # | # | ||
| # mkinitrd_command_generator.sh revision 1.45 | # mkinitrd_command_generator.sh revision 1.45 | ||
| Line 376: | Line 400: | ||
| mkinitrd -c -k 3.2.29 -f ext4 -r /dev/md1 -m mbcache: | mkinitrd -c -k 3.2.29 -f ext4 -r /dev/md1 -m mbcache: | ||
| - | rightly edited mdadm.conf then must be copied in/ | + | </ |
| + | \\ | ||
| + | \\ | ||
| + | rightly edited mdadm.conf then must be copied in/ | ||
| after you run that mkinitrd, you must update lilo. | after you run that mkinitrd, you must update lilo. | ||
| Line 395: | Line 422: | ||
| ====== Useful commands in this case ====== | ====== Useful commands in this case ====== | ||
| + | show raid array info: | ||
| + | |||
| + | < | ||
| mdadm -Es | mdadm -Es | ||
| + | </ | ||
| + | |||
| + | Assemble RAID array based on mdadm.conf | ||
| + | < | ||
| mdadm -As | mdadm -As | ||
| + | </ | ||
| + | show array info: | ||
| + | < | ||
| mdadm -D /dev/md127 | mdadm -D /dev/md127 | ||
| - | mdadm -Db /dev/md127 | + | </code> |
| + | show defined array another info: | ||
| + | < | ||
| + | mdadm -Db /dev/md127 | ||
| + | </ | ||
| + | show scsi devices info: | ||
| + | < | ||
| lsscsi | lsscsi | ||
| + | </ | ||
| + | |||
| + | show assembled raid arrays status: | ||
| + | < | ||
| cat / | cat / | ||
| + | </ | ||
| + | |||
| + | show UUID info about discs ( or RAID arrays) in system: | ||
| + | < | ||
| ls / | ls / | ||
| + | </ | ||
| + | < | ||
| dmesg |grep md | dmesg |grep md | ||
| + | </ | ||
| + | re-run lilo, when booted from another source. | ||
| + | < | ||
| chroot /mnt/hd /sbin/lilo -v 3 | chroot /mnt/hd /sbin/lilo -v 3 | ||
| + | </ | ||
| + | |||
| + | stop named RAID array: | ||
| + | < | ||
| mdadm --stop /dev/md127 | mdadm --stop /dev/md127 | ||
| + | </ | ||
| kernel options: | kernel options: | ||
| + | |||
| + | < | ||
| + | $kernelname raid=noautodetect md=1, / | ||
| + | </ | ||
| + | |||
| + | turn on not to autodetect RAID arrays, and define raid array /dev/md1, from two partitions ( members? ) | ||
| Line 428: | Line 494: | ||
| ====== Sources ====== | ====== Sources ====== | ||
| - | Originally written by --- // | + | Originally written by --- // |
| - | Rewrited with used materials from " | + | Rewrited with used materials from " |
| <!-- Please do not modify anything below, except adding new tags.--> | <!-- Please do not modify anything below, except adding new tags.--> | ||
