Enjoy Slackware 15.0!
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howtos:misc:software_raid_troubleshoot_howto [2016/11/27 12:20 (UTC)] wisedraco [Software RAID troubleshoot] |
howtos:misc:software_raid_troubleshoot_howto [2016/11/27 12:45 (UTC)] wisedraco [Useful commands in this case] |
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| 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 331: | 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 " | ||
| Line 350: | Line 353: | ||
| </ | </ | ||
| - | take a note! | + | <note important> |
| disk UUID by | disk UUID by | ||
| Line 356: | Line 359: | ||
| 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 367: | Line 374: | ||
| - 2. Using initramd. | - 2. Using initramd. | ||
| + | < | ||
| # | # | ||
| # mkinitrd_command_generator.sh revision 1.45 | # mkinitrd_command_generator.sh revision 1.45 | ||
| Line 380: | Line 388: | ||
| 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 399: | Line 410: | ||
| ====== 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 | ||
| + | </ | ||
| + | |||
| + | show defined array another info: | ||
| + | < | ||
| mdadm -Db /dev/md127 | 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? ) | ||
