Re: [CentOS] CentOS Digest, Vol 69, Issue 24

-- ---- Fred Smith -- fredex@fcshome.stoneham.ma.us ----------------------------- But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. ------------------------------- Romans 5:8 (niv) ------------------------------ ------------------------------ Message: 4 Date: Sat, 23 Oct 2010 22:05:30 -0700 From: Nataraj incoming-centos@rjl.com Subject: Re: [CentOS] [SOLVED] more software raid questions To: CentOS mailing list centos@centos.org Message-ID: 4CC3BE9A.6090207@rjl.com Content-Type: text/plain; charset=us-ascii; format=flowed fred smith wrote: > On Thu, Oct 21, 2010 at 11:03:27AM -0700, Nataraj wrote: > >> fred smith wrote: >> >>> Thanks for the additional information. >>> >>> I'll try backing up everything this weekend then will take a stab at it. >>> >>> someone said earlier that the differing raid superblocks were probably >>> the cause of the misassignment in the first place. but I have no clue >>> how the superblocks could have become messed up, can any of you comment >>> on that? willl I need to hack at that issue, too, before I can succeed? >>> >>> thanks again! >>> >>> >>> >>>> Nataraj >>>> >>>> >> I would first try adding the drives back in with: >> >> mdadm /dev/mdN -a /dev/sdXn >> >> Again, this is after having stopped the bogus md arrays. >> > > Nataraj, that worked fine, didn't need to --force it. Now I'm back to > having two devices in md0 and two in md1, and they're the RIGHT two! :) > Put the box in single-user mode to do the work, then after the array > finished resyncing, rebooted and it came up with the right two md devices. > > I appreciate your tutoring me on this, you've been most helpful. > > Thanks a bunch! > > Oh, can you refer me to any good documentation on how to admin a > software raid system? One aimed for people, like me, who are > computer literate, but have never trained as a sysadmin, and who > don't know much about RAID... > > thanks again! > > Fred > Hi Fred, You might try this one, since it seems to be one of the more up to date: https://raid.wiki.kernel.org/index.php/Linux_Raid Also the mdadm man page and running "mdadm --help". Oh, and there's this, however, some of the pages just happen to be in Chinese... http://wiki.centos.org/Search?action=fullsearch&titlesearch=1&value=... http://wiki.centos.org/Search?action=fullsearch&titlesearch=1&value=raid Nataraj Nataraj ------------------------------ Message: 5 Date: Sun, 24 Oct 2010 11:39:20 +0200 From: Niki Kovacs contact@kikinovak.net Subject: [CentOS] Maybe OT : strange wildcard behaviour To: centos@centos.org Message-ID: 1287913160.8756.7.camel@babasse.presbytere.montpezat Content-Type: text/plain; charset="UTF-8" Hi, I'm currently working through some basic HOWTOS (Linux Fundamentals 1-4 by Gentoo founder Daniel Robbins) on a CentOS 5.5 server, just to keep in shape. I've just noticed a curious wildcard behaviour, which I can't really explain. Let's say I wanted to list all the files or directories in /tmp starting with any uppercase character. Normally, I would do this : $ ls -d /tmp/[A-Z]* Curiously enough, this command lists *all* the content of /tmp, consisting of a majority of files and directories starting with a *lowercase* character. I've tested this on two different machines, with the same results. I'm puzzled. Can anybody offer an explanation for this curious behaviour ? Cheers, Niki ------------------------------ Message: 6 Date: Sun, 24 Oct 2010 07:40:08 -0400 From: fred smith fredex@fcshome.stoneham.ma.us Subject: Re: [CentOS] [SOLVED] more software raid questions To: CentOS mailing list centos@centos.org Message-ID: 20101024114008.GA13293@fcshome.stoneham.ma.us Content-Type: text/plain; charset=us-ascii On Sat, Oct 23, 2010 at 10:05:30PM -0700, Nataraj wrote: > fred smith wrote: > > On Thu, Oct 21, 2010 at 11:03:27AM -0700, Nataraj wrote: > > > >> fred smith wrote: > >> > >>> Thanks for the additional information. > >>> > >>> I'll try backing up everything this weekend then will take a stab at it. > >>> > >>> someone said earlier that the differing raid superblocks were probably > >>> the cause of the misassignment in the first place. but I have no clue > >>> how the superblocks could have become messed up, can any of you comment > >>> on that? willl I need to hack at that issue, too, before I can succeed? > >>> > >>> thanks again! > >>> > >>> > >>> > >>>> Nataraj > >>>> > >>>> > >> I would first try adding the drives back in with: > >> > >> mdadm /dev/mdN -a /dev/sdXn > >> > >> Again, this is after having stopped the bogus md arrays. > >> > > > > Nataraj, that worked fine, didn't need to --force it. Now I'm back to > > having two devices in md0 and two in md1, and they're the RIGHT two! :) > > Put the box in single-user mode to do the work, then after the array > > finished resyncing, rebooted and it came up with the right two md devices. > > > > I appreciate your tutoring me on this, you've been most helpful. > > > > Thanks a bunch! > > > > Oh, can you refer me to any good documentation on how to admin a > > software raid system? One aimed for people, like me, who are > > computer literate, but have never trained as a sysadmin, and who > > don't know much about RAID... > > > > thanks again! > > > > Fred > > > Hi Fred, > > You might try this one, since it seems to be one of the more up to date: > https://raid.wiki.kernel.org/index.php/Linux_Raid > > Also the mdadm man page and running "mdadm --help". > > Oh, and there's this, however, some of the pages just happen to be in > Chinese... > http://wiki.centos.org/Search?action=fullsearch&titlesearch=1&value=... > http://wiki.centos.org/Search?action=fullsearch&titlesearch=1&value=raid Once again, thanks! the raid.wiki... one looks good. I'm afraid that a Chinese-language resource isn't going to help me much... but perhaps someone else will see this and find it helpful. -- ---- Fred Smith -- fredex@fcshome.stoneham.ma.us ----------------------------- "For the word of God is living and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart." ---------------------------- Hebrews 4:12 (niv) ------------------------------ ------------------------------ Message: 7 Date: Sun, 24 Oct 2010 13:53:48 +0200 From: Nicolas Thierry-Mieg Nicolas.Thierry-Mieg@imag.fr Subject: Re: [CentOS] Maybe OT : strange wildcard behaviour To: CentOS mailing list centos@centos.org Message-ID: 4CC41E4C.1040805@imag.fr Content-Type: text/plain; charset=ISO-8859-1; format=flowed Niki Kovacs wrote: > Hi, > > I'm currently working through some basic HOWTOS (Linux Fundamentals 1-4 > by Gentoo founder Daniel Robbins) on a CentOS 5.5 server, just to keep > in shape. > > I've just noticed a curious wildcard behaviour, which I can't really > explain. Let's say I wanted to list all the files or directories in /tmp > starting with any uppercase character. Normally, I would do this : > > $ ls -d /tmp/[A-Z]* > > Curiously enough, this command lists *all* the content of /tmp, > consisting of a majority of files and directories starting with a > *lowercase* character. I've tested this on two different machines, with > the same results. I'm puzzled. > > Can anybody offer an explanation for this curious behaviour ? probably "expected" behavior, depending on your locale. google for LC_COLLATE. LC_COLLATE='C' ; ls -d /tmp/[A-Z]* should do what you want. ------------------------------ _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos End of CentOS Digest, Vol 69, Issue 24 **************************************