Re: [CentOS] boot problem after disk change on raid1
The system works just fine now. I think there was a disk check or something at boot time which takes 15-20 minutes (I rarely reboot the system once or twice a year), and it made me think that the system does not boot. Thanks for your help. Bunyamin. 2011/9/8 Bünyamin İzzet > > > On Thu, Sep 8, 2011 at 8:11 AM, Devin Reade wrote: > >> Bünyamin Ýzzet wrote: >> >> > On Wed, Sep 7, 2011 at 11:38 PM, Devin Reade wrote: >> > >> [snip] >> >># grub >> >>grub> device (hd0) /dev/sdb >> >>grub> root (hd0,0) >> >>grub> setup (hd0) >> >>grub> quit >> > >> > It still does not boot. I could not see the error message, because it is >> a >> > dedicated server and I am not sitting at the monitor of the server. So I >> > type the lines in grub.conf manually to see the error (I'm not sure if >> it is >> > the right thing to see the error). >> >> If you mean that you typed the lines I gave above into grub.conf, then >> that was not what was intended (and I doubt that it would work). My >> intent was that you get the system booted and running normally (perhaps >> via the rescue disk), and after that execute 'grub' interactively >> and issue those commands. >> >> Devin >> > > As you said, I booted the system via rescue disk, and execute grub and > issue those commands. Then, I reboot the system, but it does not boot. > > Then I searched on google about logging grub errors, which I could not find > anything useful (meybe I did not look enough). So that, in rescue system, I > execute grub and type commands in grub.conf (results are below) to see which > error occurs. > > > > # grub > Probing devices to guess BIOS drives. This may take a long time. > > > GNU GRUB version 0.97 (640K lower / 3072K upper memory) > > [ Minimal BASH-like line editing is supported. For the first word, TAB > lists possible command completions. Anywhere else TAB lists the possible > completions of a device/filename.] > grub> root (hd1,0) > root (hd1,0) > Filesystem type is ext2fs, partition type 0xfd > grub> kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317 > > kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317 > [Linux-bzImage, setup=0x1e00, size=0x1fe01c] > grub> initrd /initrd-2.6.18-238.19.1.el5.img > > initrd /initrd-2.6.18-238.19.1.el5.img > > Error 28: Selected item cannot fit into memory > grub> quit > quit > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] boot problem after disk change on raid1
On Thu, Sep 8, 2011 at 8:11 AM, Devin Reade wrote: > Bünyamin Ýzzet wrote: > > > On Wed, Sep 7, 2011 at 11:38 PM, Devin Reade wrote: > > > [snip] > >># grub > >>grub> device (hd0) /dev/sdb > >>grub> root (hd0,0) > >>grub> setup (hd0) > >>grub> quit > > > > It still does not boot. I could not see the error message, because it is > a > > dedicated server and I am not sitting at the monitor of the server. So I > > type the lines in grub.conf manually to see the error (I'm not sure if it > is > > the right thing to see the error). > > If you mean that you typed the lines I gave above into grub.conf, then > that was not what was intended (and I doubt that it would work). My > intent was that you get the system booted and running normally (perhaps > via the rescue disk), and after that execute 'grub' interactively > and issue those commands. > > Devin > As you said, I booted the system via rescue disk, and execute grub and issue those commands. Then, I reboot the system, but it does not boot. Then I searched on google about logging grub errors, which I could not find anything useful (meybe I did not look enough). So that, in rescue system, I execute grub and type commands in grub.conf (results are below) to see which error occurs. # grub Probing devices to guess BIOS drives. This may take a long time. GNU GRUB version 0.97 (640K lower / 3072K upper memory) [ Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename.] grub> root (hd1,0) root (hd1,0) Filesystem type is ext2fs, partition type 0xfd grub> kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317 kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317 [Linux-bzImage, setup=0x1e00, size=0x1fe01c] grub> initrd /initrd-2.6.18-238.19.1.el5.img initrd /initrd-2.6.18-238.19.1.el5.img Error 28: Selected item cannot fit into memory grub> quit quit ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] boot problem after disk change on raid1
On Wed, Sep 7, 2011 at 11:38 PM, Devin Reade wrote: > --On Wednesday, September 07, 2011 08:22:47 PM +0300 Bünyamin İzzet > wrote: > >- made sure we have boot blocks on both disks, based on information > at http://grub.enbug.org/MirroringRAID >modified /boot/grub/device.map from: > (hd0) /dev/sda >(hd1) /dev/sdb > to: >(hd0) /dev/sda >(hd0) /dev/sdb > I have changed the device.map as you said >and then: ># grub >grub> device (hd0) /dev/sdb >grub> root (hd0,0) >grub> setup (hd0) >grub> quit > > And, it is done too. It still does not boot. I could not see the error message, because it is a dedicated server and I am not sitting at the monitor of the server. So I type the lines in grub.conf manually to see the error (I'm not sure if it is the right thing to see the error). # grub Probing devices to guess BIOS drives. This may take a long time. GNU GRUB version 0.97 (640K lower / 3072K upper memory) [ Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename.] grub> root (hd1,0) root (hd1,0) Filesystem type is ext2fs, partition type 0xfd grub> kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317 kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317 [Linux-bzImage, setup=0x1e00, size=0x1fe01c] grub> initrd /initrd-2.6.18-238.19.1.el5.img initrd /initrd-2.6.18-238.19.1.el5.img Error 28: Selected item cannot fit into memory grub> quit quit If it is not the right thing to see the error message at boot time, is there any chance to log grub errors, boot errors? Thanks, Bunyamin. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] boot problem after disk change on raid1
Hello, I have two disks sda and sdb. One of the was broken so I have changed the broken disk with a working one. I started the server in rescue mode, and created the partional table, and added all the partitions to the software raid. *I have added the partitions to the RAID, and reboot.* # mdadm /dev/md0 --add /dev/sdb1 # mdadm /dev/md1 --add /dev/sdb2 # mdadm /dev/md2 --add /dev/sdb3 # mdadm /dev/md3 --add /dev/sdb4 *After reboot, server did not boot. So I do the followings:* # mount /dev/md1 /mnt/rescue # mount /dev/md0 /mnt/rescue/boot # mount -o bind /dev /mnt/rescue/dev # mount -o bind /proc /mnt/rescue/proc # mount -o bind /dev/shm /mnt/rescue/dev/shm # mount -o bind /sys /mnt/rescue/sys # chroot /mnt/rescue *I checked the device.map* # cat /boot/grub/device.map (hd0) /dev/sda (hd1) /dev/sdb *And, install the grub.* # grub Probing devices to guess BIOS drives. This may take a long time. GNU GRUB version 0.97 (640K lower / 3072K upper memory) [ Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename.] grub> root (hd0,0) root (hd0,0) Filesystem type is ext2fs, partition type 0xfd grub> setup (hd0) setup (hd0) Checking if "/boot/grub/stage1" exists... yes Checking if "/boot/grub/stage2" exists... yes Checking if "/boot/grub/e2fs_stage1_5" exists... yes Running "embed /boot/grub/e2fs_stage1_5 (hd0)"... 15 sectors are embedded. succeeded Running "install /boot/grub/stage1 (hd0) (hd0)1+15 p (hd0,0)/boot/grub/stage2 /boot/grub/grub.conf"... succeeded Done. grub> root (hd1,0) root (hd1,0) Filesystem type is ext2fs, partition type 0xfd grub> setup (hd1) setup (hd1) Checking if "/boot/grub/stage1" exists... yes Checking if "/boot/grub/stage2" exists... yes Checking if "/boot/grub/e2fs_stage1_5" exists... yes Running "embed /boot/grub/e2fs_stage1_5 (hd1)"... 15 sectors are embedded. succeeded Running "install /boot/grub/stage1 (hd1) (hd1)1+15 p (hd1,0)/boot/grub/stage2 /boot/grub/grub.conf"... succeeded Done. grub> quit quit *But it still does not boot. What should I do at this point? What do you suggest?* *Disk informations* # fdisk -l /dev/sd[ab] Disk /dev/sda: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00090dd1 Device Boot Start End Blocks Id System /dev/sda1 * 1 131 1052226 fd Linux raid autodetect /dev/sda2 132535341945715 fd Linux raid autodetect /dev/sda35354 96733 734009850 fd Linux raid autodetect /dev/sda4 96734 182401 688128210 fd Linux raid autodetect Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xf5c3aa6a Device Boot Start End Blocks Id System /dev/sdb1 * 1 131 1052226 fd Linux raid autodetect /dev/sdb2 132535341945715 fd Linux raid autodetect /dev/sdb35354 96733 734009850 fd Linux raid autodetect /dev/sdb4 96734 182401 688128210 fd Linux raid autodetect *Raid info* # cat /proc/mdstat Personalities : [raid1] md3 : active raid1 sda4[0] sdb4[2] 688128128 blocks [2/1] [U_] resync=DELAYED md2 : active raid1 sda3[0] sdb3[2] 734009728 blocks [2/1] [U_] [>] recovery = 1.8% (13651648/734009728) finish=133.5min speed=89915K/sec md1 : active raid1 sdb2[2] sda2[0] 41945600 blocks [2/1] [U_] resync=DELAYED md0 : active raid1 sda1[0] sdb1[1] 1052160 blocks [2/2] [UU] unused devices: *Mount informations* */dev/md0 is mounted /boot /dev/md1 is mounted / **/dev/md2 and /dev/md3 is for backup and some personal data* *Here is the grub.conf* # cat /mnt/rescue/boot/grub/grub.conf timeout 5 default 0 fallback 1 title CentOS (2.6.18-238.19.1.el5) root (hd1,0) kernel /vmlinuz-2.6.18-238.19.1.el5 ro root=/dev/md1 vga=0x317 initrd /initrd-2.6.18-238.19.1.el5.img title CentOS (2.6.18-238.9.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-238.9.1.el5 ro root=/dev/md1 vga=0x317 initrd /initrd-2.6.18-238.9.1.el5.img title CentOS (2.6.18-194.26.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-194.26.1.el5 ro root=/dev/md1 vga=0x317 initrd /initrd-2.6.18-194.26.1.el5.img title CentOS (2.6.18-194.3.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-194.3.1.el5 ro root=/dev/md1 vga=0x317 initrd /initrd-2.6.18-194.3.1.el5.img title CentOS (2.6.18-164.15.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.15.1.el5 ro root=/dev/md1 vga=0x3
