Hello, I ran a yum update on a centos 5 machine. I then removed some old kernel files, 2.6.x.14 and 2.6.x.10 older kernels. The issue is i got the error "Grub can not create template". I checked /boot and it is now empty. If i reboot this box it certainly will have an issue. I'm running the latest kernel 2.6.x.15 i believe it is. Can anyone tell me how to fix this? Thanks. Dave.
On Nov 25, 2007 3:16 PM, Dave dmehler26@woh.rr.com wrote:
I ran a yum update on a centos 5 machine. [...] I checked /boot and it is now empty.
Start by checking /var/cache/yum to see if the RPMs for your most recently installed kernel are still there. If they are, use "rpm -ivh --oldpackage ..." to re-install, and that should re-populate /boot.
If they're not in the cache, you'll need to manually download them from mirrors.centos.org and then proceed with rpm -i.
I also suggest that you "yum install yum-utils" and use package-cleanup to manage your old kernel files from now on.
Hello, Forgive this if it's a repost. The issue with my kernel has been solved, but now i have an out of synchronization raid1 array. To fix the original problem i had to boot in rescue mode, i uninstalled and reinstalled the kernel, that put the files back in /boot, but it didn't put the grub.conf back together. So i got one from another centos box and added in what i needed. I rebooted, now i'm getting errors from md, the array is out of sync. Anyone have a fix for this? Thanks.
Dave.
ading raid1.ko module md: raid1 personality registered for level 1 md: Autodetecting RAID arrays. md: autorun ... md: considering hdb5 ... md: adding hdb5 ... md: hdb3 has different UUID to hdb5 md: hdb2 has different UUID to hdb5 md: hdb1 has different UUID to hdb5 md: adding hda5 ... md: hda3 has different UUID to hdb5 md: hda2 has different UUID to hdb5 md: hda1 has different UUID to hdb5 md: created md3 md: bind<hda5> md: bind<hdb5> md: running: <hdb5><hda5> raid1: raid set md3 active with 2 out of 2 mirrors md: considering hdb3 ... md: adding hdb3 ... md: hdb2 has different UUID to hdb3 md: hdb1 has different UUID to hdb3 md: adding hda3 ... md: hda2 has different UUID to hdb3 md: hda1 has different UUID to hdb3 md: created md0 md: bind<hda3> md: bind<hdb3> md: running: <hdb3><hda3> raid1: raid set md0 active with 2 out of 2 mirrors md: considering hdb2 ... md: adding hdb2 ... md: hdb1 has different UUID to hdb2 md: adding hda2 ... md: hda1 has different UUID to hdb2 md: created md2 md: bind<hda2> md: bind<hdb2> md: running: <hdb2><hda2> raid1: raid set md2 active with 2 out of 2 mirrors md: considering hdb1 ... md: adding hdb1 ... md: adding hda1 ... md: created md1 md: bind<hda1> md: bind<hdb1> md: running: <hdb1><hda1> raid1: raid set md1 active with 2 out of 2 mirrors md: ... autorun DONE. md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. Trying to resume from /dev/md0 No suspend signature on swap, not resuming. Creating root device. Mounting root filesystem. mount: could notKernel panic - not syncing: Attempted to kill init! find filesystem '/dev/root' Setting up other filesystems. Setting up new root fs setuproot: moving /dev failed: No such file or directory no fstab.sys, mounting internal defaults setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory Switching to new root and running init. unmounting old /dev unmounting old /proc unmounting old /sys switchroot: mount failed: No such file or directory
----- Original Message ----- From: "Bart Schaefer" barton.schaefer@gmail.com To: "CentOS mailing list" centos@centos.org Sent: Sunday, November 25, 2007 10:38 PM Subject: Re: [CentOS] CentOS /boot kernel files removed after rpm upgrades
On Nov 25, 2007 3:16 PM, Dave dmehler26@woh.rr.com wrote:
I ran a yum update on a centos 5 machine. [...] I checked /boot andit is now empty.
Start by checking /var/cache/yum to see if the RPMs for your most recently installed kernel are still there. If they are, use "rpm -ivh --oldpackage ..." to re-install, and that should re-populate /boot.
If they're not in the cache, you'll need to manually download them from mirrors.centos.org and then proceed with rpm -i.
I also suggest that you "yum install yum-utils" and use package-cleanup to manage your old kernel files from now on. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
on 11/28/2007 12:30 PM Dave spake the following:
Hello, Forgive this if it's a repost. The issue with my kernel has been solved, but now i have an out of synchronization raid1 array. To fix the original problem i had to boot in rescue mode, i uninstalled and reinstalled the kernel, that put the files back in /boot, but it didn't put the grub.conf back together. So i got one from another centos box and added in what i needed. I rebooted, now i'm getting errors from md, the array is out of sync. Anyone have a fix for this? Thanks.
What is the exact error? cat /proc/mdstat might give some clues.
Hello, The error is in my original posting, md the raid arrays are not synchronized. Checking /proc/mdstat output is below, doesn't look to me like trouble. Thanks. Dave.
Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] md1 : active raid1 hdb1[1] hda1[0] 102208 blocks [2/2] [UU]
md3 : active raid1 hdb5[1] hda5[0] 1036096 blocks [2/2] [UU]
md0 : active raid1 hdb3[1] hda3[0] 522048 blocks [2/2] [UU]
md2 : active raid1 hdb2[1] hda2[0] 8337664 blocks [2/2] [UU]
unused devices: <none>
----- Original Message ----- From: "Scott Silva" ssilva@sgvwater.com To: centos@centos.org Sent: Wednesday, November 28, 2007 5:13 PM Subject: [CentOS] Re: CentOS /boot kernel files removed after rpm upgrades
on 11/28/2007 12:30 PM Dave spake the following:
Hello, Forgive this if it's a repost. The issue with my kernel has been solved, but now i have an out of synchronization raid1 array. To fix the original problem i had to boot in rescue mode, i uninstalled and reinstalled the kernel, that put the files back in /boot, but it didn't put the grub.conf back together. So i got one from another centos box and added in what i needed. I rebooted, now i'm getting errors from md, the array is out of sync. Anyone have a fix for this? Thanks.
What is the exact error? cat /proc/mdstat might give some clues.
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on 11/28/2007 2:46 PM Dave spake the following:
Hello, The error is in my original posting, md the raid arrays are not synchronized. Checking /proc/mdstat output is below, doesn't look to me like trouble. Thanks. Dave.
Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] md1 : active raid1 hdb1[1] hda1[0] 102208 blocks [2/2] [UU]
md3 : active raid1 hdb5[1] hda5[0] 1036096 blocks [2/2] [UU]
md0 : active raid1 hdb3[1] hda3[0] 522048 blocks [2/2] [UU]
md2 : active raid1 hdb2[1] hda2[0] 8337664 blocks [2/2] [UU]
unused devices: <none>
That looks perfectly fine. Maybe on boot the arrays weren't sync'd, but have since caught up.
Hi, Thanks for your reply. I believe your right, it's fine, detecting everything. But in the below i'm seeing hda1 has different uuid than the other raid elements. How do i correct this as this appears to be the heart of the trouble? Thanks. Dave.
Loading raid1.ko module md: raid1 personality registered for level 1 md: Autodetecting RAID arrays. md: autorun ... md: considering hdb5 ... md: adding hdb5 ... md: hdb3 has different UUID to hdb5 md: hdb2 has different UUID to hdb5 md: hdb1 has different UUID to hdb5 md: adding hda5 ... md: hda3 has different UUID to hdb5 md: hda2 has different UUID to hdb5 md: hda1 has different UUID to hdb5 md: created md3 md: bind<hda5> md: bind<hdb5> md: running: <hdb5><hda5> raid1: raid set md3 active with 2 out of 2 mirrors md: considering hdb3 ... md: adding hdb3 ... md: hdb2 has different UUID to hdb3 md: hdb1 has different UUID to hdb3 md: adding hda3 ... md: hda2 has different UUID to hdb3 md: hda1 has different UUID to hdb3 md: created md0 md: bind<hda3> md: bind<hdb3> md: running: <hdb3><hda3> raid1: raid set md0 active with 2 out of 2 mirrors md: considering hdb2 ... md: adding hdb2 ... md: hdb1 has different UUID to hdb2 md: adding hda2 ... md: hda1 has different UUID to hdb2 md: created md2 md: bind<hda2> md: bind<hdb2> md: running: <hdb2><hda2> raid1: raid set md2 active with 2 out of 2 mirrors md: considering hdb1 ... md: adding hdb1 ... md: adding hda1 ... md: created md1 md: bind<hda1> md: bind<hdb1> md: running: <hdb1><hda1> raid1: raid set md1 active with 2 out of 2 mirrors md: ... autorun DONE. md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. Trying to resume from /dev/md0 No suspend signature on swap, not resuming. Creating root device. Mounting root filesystem. mount: could notKernel panic - not syncing: Attempted to kill init! find filesystem '/dev/root' Setting up other filesystems. Setting up new root fs setuproot: moving /dev failed: No such file or directory no fstab.sys, mounting internal defaults setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory Switching to new root and running init. unmounting old /dev unmounting old /proc unmounting old /sys switchroot: mount failed: No such file or directory
----- Original Message ----- From: "Scott Silva" ssilva@sgvwater.com To: centos@centos.org Sent: Wednesday, November 28, 2007 5:52 PM Subject: [CentOS] Re: CentOS /boot kernel files removed after rpm upgrades
on 11/28/2007 2:46 PM Dave spake the following:
Hello, The error is in my original posting, md the raid arrays are not synchronized. Checking /proc/mdstat output is below, doesn't look to me like trouble. Thanks. Dave.
Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] md1 : active raid1 hdb1[1] hda1[0] 102208 blocks [2/2] [UU]
md3 : active raid1 hdb5[1] hda5[0] 1036096 blocks [2/2] [UU]
md0 : active raid1 hdb3[1] hda3[0] 522048 blocks [2/2] [UU]
md2 : active raid1 hdb2[1] hda2[0] 8337664 blocks [2/2] [UU]
unused devices: <none>
That looks perfectly fine. Maybe on boot the arrays weren't sync'd, but have since caught up.
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Scott Silva