Re: autodetection
hi ya ryan usually i get the opposite problem how to stop the system from autodetecting the raid array sot hat it doesnt stop the booting... so to turn it ondo the oopposite of what i do to fix my "faulty raid" when it dies - make sure you have /etc/raidtab - make sure your kernel supports raid - make sure you have /deb/md0 or something defined in /etc/fstab than when bootingit should see your raid drive and automatically mount it for you... have fun raiding... alvin btw. i have a scsi3 sw Raid5 in a 1U server box running !!! fun and am looking for beta-testors... - please reply privately if interested Ryan Daly wrote: Again may be missing something here... How do you turn on autodetection in the kernel? -rd
Re: Trouble in RAID5 - other stuff
hi "raiders"... i recently changed my raid5 box that was running on debian-2.2 into a new atx case new linux-2.2.16...etc.e.tc... - - its in a 1U raid5 box... worlds first ?? - seems like mkraid does various different things ??? some mkraid works and other versions dont... takamura-san, try a different mkraid... ?? mkraid that came with your linux distro - mkraid from raidtools-0.90 - mkraid from raidtools-0.41.. --- my raid5 problem could be a flaky sdc drive since it keeps disappearing randomly and forces a degraded mode... ( have no spare drives either ) am doing a tests for... dd if=/Raid5/1_GB_file.txt of=/Raid5/test/1.x dd if=/Raid5/1_GB_file.txt of=/Raid5/test/2.x diff /Raid5/test/1.x /Raid5/test/2.x - if it crashes...at least i can just rebuild the 1U raid5 box have fun linux'ing and raiding alvin I've been using RAID5 system for nearly six months without problem, but recently the machine halted while the rebooting process (displayed message attached below). I tried old valid kernels and some succeeded to boot, but the md device(/dev/md0) was still invisible. According to the dmesg (attached the last of the mail), the kernel looks trying to recognize md device. I tried several old kernels which all had worked fine, but the situation didn't change. There's no /proc/mdstat, and "mkraid --upgrade /dev/md0" failed saying handling MD device /dev/md0 analyzing super-block disk 0: /dev/sda1, 48846847kB, raid superblock at 48846720kB array needs no upgrade mkraid: aborted, see the syslog and /proc/mdstat for potential clues. Is it possible to recover the content of the RAID? (there were about 200G of data..) Or do I have to "really force" mkraid? Any suggestion, information is welcome. Other information (System, raidtab, etc) is also attached below. Best regards, Takamura Seishi Takamura, Dr.Eng. NTT Cyber Space Laboratories Y517A 1-1 Hikarino-Oka, Yokosuka, Kanagawa, 239-0847 Japan Tel: +81 468 59 2371, Fax: +81 468 59 2829 E-mail: [EMAIL PROTECTED]
sw raid5 upgrade
hi ya "raiders" i just upgraded my old sw raid5 on debian-2.2 w/ linux-2.2.10 to linux-2.2.16 w/ the patches from mingo's patch dirs... works good...nice and clean...no problems... good work guys and my (abbreviated) collection of raid stuff... http://www.linux-consulting.com/Raid/Docs c ya alvin
Re: High load and raid reconstruction - pagers
hi ya michael could you send me a list of the "pager utilties" ?? or urls... here's my list of "raid monitoring" scripts ( written by others ... ) http://www.linux-consulting.com/Raid/Docs raid_monitor* and for normal monitoring tools... http://www.Linux-Consulting.com/Monitor ( didn't find a suitable one so i wrote my quickie version... ( with cron running the jobs...and html to view the results... ( and email and/or page if something goes wrong.. ( # # References - Other system/daemon monitors # == -- # http://www.Linux-Consulting.com/Monitor # http://www.kernel.org/software/mon # http://strobe.weeg.uiowa.edu/~edhill/public/spong/example/main.html # http://www.maclawran.ca/bb-dnld # http://www.manage.com/java/demo/index.htm images/eMCommerceLarge.gif # http://www.firehunter.com # http://www.byte.com/column/servinglinux/BYT19990728S0008 # http://www.slac.stanford.edu/cgi-wrap/pingtable.pl # http://puck.nether.net/sysmon # http://www.bb4.com Big Brother # thanx alvin Michael wrote: How can I tell if a disk in a raid 5 config has gone bad? I want to set up a system monitor to page me in just such an event. download this small script package to run from cron that will e-mail you when there is a problem. There are lots of pager utilities that work from e-mail if you want to be paged. ftp.bizsystems.net/pub/raid/raidcheck-1.02.tgz [EMAIL PROTECTED]
Re: FW: ATA66 Raid - hotswap trays
hi peter where did you get the "hot swap trays" for IDE drive ?? how is the connectors done...or does the tray have its IDE drive connectors... and the try has a special connector to go to the "raid" backplane ?? have you tried to pull power to the ide-based raid drive say the master drive and see what happens ??? and plug in a blank ide master and see if it resyncs ?? thanx alvin Peter Frischknecht wrote: I would just go with 3Ware. For $100 you can get a true hardware, 2 IDE 66 drive, RAID 1 or 0 configuration. With Hard drives as cheap as $260 for a 60Gig drive, you can have a redundant 60Gig RAID 1 system for under $700!!(including hot swap trays) I bought the FastTrak and it now sits on my shelf. It is a piece of crap. Don't hesitate in contacting me if you have any questions. Peter Frischknecht Empowering Solutions, Inc. http://www.empoweringsolutions.com (864)654.6544 x103 Phone (864)654.0022 Fax
Re: ide hardware raid
hi all "raiders" just was at the pc store in the duilding I'm in.. they have scsi-2 raid cards from adaptec... 1-channel($430) and 3-channel($650) raid controllers.. a dumb question... what are the channels used for ??? have fun raiding... alvin http://www.linux-consulting.com/Raid/Docs/raid_hw.txt ( change the filename for other raid docs and comments and resources ) Terry Ewing wrote: Hello, I'm an administrator in a co-location facility and recently we had a customer come in to replace a raid card. The only catch was the RAID card was IDE. This was on an NT box, but I was wondering: 1) what IDE RAID cards are out there now. What is known about them. 2) What is the status of Linux support for IDE RAID cards. Thanks! - Terry Ewing [EMAIL PROTECTED] Deepwell Internet Services
Re: Good Information on Linux/RAID
hi ya bryan http://ostenfeld.dk/~jakob/Software-RAID.HOWTO and my collection... http://www.Linux-Consulting.com/Raid chunksize...etc http://www.Linux-Consulting.com/Raid/Docs/raid_chunksize.txt chunk size and stripping comparson http://www.Linux-Consulting.com/Raid/Docs/raid_benchmark.paul.txt other misc monitoring, benchmark and test scripts have fun alvin Bryan Batchelder wrote: I managed to get a nice 14GB array up using RedHat 6.0 and piecing together information from man pages and web sitesbut now I am wondering what the preferred documentation set is for the latest RAID tools. The stuff in the LDP is pretty old looking. I would like to find out information about stride settings/performance and ultimately how to get it to properly auto start...I still have to log in after reboot and do a 'raidstart /dev/md0', 'mount -a'. Thanks, --Bryan
Re: Monitoring?
hi danilo I've collected some monitoring tools/scripts people have hacked... http://www.linux-consulting.com/Raid/docs/raid_monitor* I also reviewsed/collected some regular monitoring tools http://www.linux-consulting.com/Monitor/monitor.pl about 40 lines down is a list of various prog/scripts... have fun raiding alvin Danilo Godec wrote: Hi! Ok, found an archive, but haven't found the questions/answers I was hoping to find. I have a RAID1 setup with kernel 2.2.13 and appropriate patches for 2.2.11 (only two files didn't patch correctly, as they were already patched in 2.2.13) and raidtools-0.90. Everything works nice, even hot-swapping disks (with hot-pluggable SCSI backplane and some caution, of course) didn't cause a problem. However, are there any tools already available to monitor the md device and notify the administrator via mail, modem, pager etc.? Thanks, D.
Re: raidtools-041 - raidtools-0.90.
hi ya chris I have a RAID array created using raidtools-0.41 on a 2.0.36 kernel (RedHat 5.0 i think), which is running Linux software RAID-5 just fine. I am updating the software to RedHat v6.0 soon which uses raidtools-0.90 and a 2.2.5 kernel. Anyone see any potential problems or have war stories to trade? I did that exact upgrade about 6 months ago I had to use the old mdadd/mdrun commands from the old raidtools... Do not use the new raidtools if you value your old data in upgrading from redhat-5.x to redhat-6.0. ( lost my backup disks during my upgrade tests... not a big issue ) - note redhat-6.x also does additional reverse dns checks and needs ver=2 for talking/mounting the older sun boxes too am currently upgrading to redhat-6.1. and so far... those older superblocks still seems to be okay with the new redhat-6.1 (2.2.10) /etc/raidtab format/tools... - am using hardware raid ( three 64Gb boxes ) + raid0 for mirroring/backups w/ many 15Gb ide drives spanning a few servers ( daily, weekly, monthly )... have fun "raiding" alvin http://www.linux-consulting.com/Raid ( my collection of raid notes )
Re: redhat 6.1 RAID: what's different - installs
hi ya... This is a feature of the new graphical installer. Creating raid partitions is not available if you are using the text mode installer. Is it available if you do a kickstart installation? I'd be interested in writing an installer/duplicator... - am tired of doing it the redhat way... - also installed many suse, caldera, slackware, pht, debian... - biggest problem is kernel upgrades... to have to do it n-times... on different revs of redhat ( 5.x, 6.x ) and different distro... files are are different - I like to do something like: a. give um a bootable cdrom... ( self detect the hardwara ) ( aka rescue cdrom ) if they have MS already installed...read the registry - the installer should automatically detect the hardware installed... ( don't ask about hardware... go and look for it ) - if MS can do it...( add new hw wizzard ) ... we can do it too.. if the users want dual booting... we do that too... b. ask them if they know about partitions...etc... if not use the default /, /tmp, /var, /usr, /swap /home [ /opt /export ] ( just overwrite the disk like MS overwrites the disk ) - check for disk space availability... - guess I don't like just / and swap... too unreliable c. ask about raid setup and backup setup... - raid0/raid1, raid5... d. install the "linux distro cdrom" or dd the "master distro" disk - master distro disks already have all the patches done.. - .bashrc, .login, .alias etc all setup and fixed... e. install using tar or rpm or dpkg or ??? f. apply patches from the "distro site"... if so desired... - if we have 100 employee or 1,000 employees...we do not want to install linux the current way... we need a distribution server and an automated script to upgrade itself from the distro server... have fun alvin
Re: networked RAID-1
hi ya tom if the idea is to have a "fail safe" system when we were doing doa work for the gov't... we had to have multiple redundancyand redundancy for the redundancy... ( gov't had too much $$$ to throw at it ) but basically, how I would like to see a "HA" type linux system would have: dual-port scsi controller... read/write by two different servers - - this is the key factor...in my mind... - dual CPU is nice...but it's worthless(?)... - many other points of failures... ( mb, cpu, memory, disk, connector, cables, power supp, electricity, etc ) you really want two motherboards and/or boxes that access the same disk... if one system fails...the other system should be able to read/write that data.. - if one "system" fails... than the other "system" can step in... ( multi-host serverswww1, www2, www3 acting as "www" ( for now sun boxes does this better than linux ? ) when there is a transaction like a mc/visa/amex transaction occur... the terminal sends that request to two servers... both record the request... one of the two machines will respond with the authorization... and they both acknowledge that the task was done... - if it's not acknowledged... the task is pending still cause the other system got stuck someplace... well...guess i just wanted to say that"dual-port disk controller" is what does the job best...if not... the disk contoller dies and all hell breaks loose... or the motherboard dies and ..so on... ( my adaptec controller just died this past week...so it's an issue ) - no monthly tape archive for a while... have fun alvin Tom Kunz wrote: SW-RAID List, This is slightly off-topic. No, in fact it might be further than just "slightly". I have been exploring redundant network filesystems for Linux, off and on for the past several months. I need something that will replicate a fs across a lan, much the same way RAID-1 duplicates fs's. The purpose is for a high-availability system, where several nodes participate to keep a set of services active indefinitely. My company uses a SCO solution, called "Sentinel", which is just a single-master/single-slave arrangement that duplicates disks between two machines. When the master node goes down, the other assumes its IP, and has an identical filesystem as the dead machine. When the master comes back up, it resyncs to the master and assumes the slave position again. But we want to dump SCO and go entirely with Linux, and have the same functionality. I have already explored Coda, InterMezzo, and the Linux-HA website (http://www.henge.com/~alanr/ha). So far, the HA site only has the IP assumption source, and links to other sites I've already taken a look at, none of which contain what I think is necessary for a redundant network filesystem. Coda and InterMezzo seem more like "caching" solutions, for mobile or remote computing, not as a *redundant*, fully-duplicated filesystem. I attended a seminar at LinuxExpo in Raleigh, NC on GFS, but that looked like something still in its infancy, and relying somewhat heavily upon certain SCSI and Fiber-Channel features. I want something that anyone with 1 machine and any linux-supported disk media can use as RAID-1 data duplication. After considering the RAID-1 code that has come to (relative) maturity here, it seems like a good code base to get started on a networked RAID-1-type system. Basically, rather than sync-ing between two physically local disks, modify the code to sync between a local and a remote (or more than one remote) disk. Maybe I've missed something about Coda, GFS, or Intermezzo, or maybe there's an entirely different system that already does exactly what I want (as open-source, of course). But if not, is there anyone else on this list who is interested in venturing out into this arena? Thanks, Tom -- Tom KunzTool Developer Software Consulting Services PGP Key http://www.users.fast.net/~tkunz/pgp.html 1452 1F99 E2BB 632E 6EAE 2DF0 EF11 4DFC DB62 7EBC 3BA0 6C40 88C0 C509 DA85 91B4 D5E9 EFD3
Re: RAID 1
hi ya robin I have had success mirroring linux with Redhat 5.2. I used the same procedure (minor variations) on 6.0 and the process does not work. Is there a tried and true way to mirror? my understanding of mirroring.got carried away in my mirroring scenario... using hardware or software mirroring...like raid1... normally... - it copies data to disk1 and also copies/mirrors to disk2 - mirroring is almost instantaneous... - if disk1 dies for whatever reason...you have data on disk2 - no problem...all's wellreplace disk1 and resync other failure modes - if you get some kind of corruption due to a hacker, accidental rm -rf /, power supply surges, bad cvs, bad memory, bad e2fsck passes, etc... - all data on disk1 will be mirrored to disk2 including the *bad data*...so you lose all your data... - your data on the mirror should also be backed up elsewhere.. ( tape, other disks on other machines ) - this is what I want to protect against... - if they did rm -rf / I can still recover in minutes after rm -rf completed Using "cron" or programs to periodically mirror data... mirror.pl is freely available to mirror data from one server to another checked a few other mirror programs...but did not meet my needs - bidirectonal mirroring... ( so i wrote one ) normally... - run mirror.pl thru cron or other mechanisms... - mirror the data as often as you like to keep your data in sync for the "other failur modes" this should prevent the *good data* from being deleted due to instant mirroring... .. should also prevent bad data from corrupting the good data... - other issues - might want to keep a local mirror ( raid1 ) for protecting data before the data was mirrored/copied to another system Bidirectional mirroring...tricky stuff ??? - - mirror /home1 to /home2 - mirror /home2 to /home1 - - usually /home1 is the main/primary server... and /home2 is the mirror in my case... - - what happens when data on /home1/foo.txt is deleted... do we delete it on /home2/foo.txt ?? - what happens when data on /home2/foo.txt is deleted... do we delete it on /home1/foo.txt ?? - what happens when someone is editing /home1/foo.txt...and someone else is editing /home2/foo.txt - how often does one go delete old/obsolete files on the other mirror ? - if /home1/file.txt was deleted... do we immediately delete it on /home2/file.txt - - one mirror pass from /home1 to /home2 takes about 1 hour to complete in my case... - even hours from /home1 to /home2... - odd hours from /home2 to /home1 What is the difference between backups and mirroring ??? - - I create and keep daily_changes.tgz for backups... - I expand and copy/mirror those same daily_changes.tgz onto the mirror machine - - i wrote a mirror program that does this... - does hourly mirror, - does daily incremental backups since last full backup - does weekly incremental backup over 30 days - does full backup - - can point to different backup machines Backup.Full, Backup.Daily, Backup.Hourly ... yes... it was fun to write that bidirectional mirror program... - would like to clean it aup and release it under gpl have fun alvin
Re: updating arrays from 0.42 to 0.90
hi marc To all of you that shout for raid-0.90 into kernel 2.2.12: Would you please tell us how to upgrade old existing raid0/linear devices (smoothly, IP)? when I tried out our old raid drives with linux-2.2.10...it wouldn;t recognize it so I compiled raid-0.42 under 2.2.10 and still using the old drives as is... ( for redhat-60 distro ) - didn't want to lose /home directory on the drives ... have fun linuxing -n- raiding alvin - The HOWTO that comes with the raidtools-package and the man pages say not a word about that, - Several posts of others asking exactly the same question were left unanswered or received only incompetent answers. (looked at the last 2 months) - The proposed FAQ still seems to be missing. Marc PS: Don't flame me, _tell_ me... -- Marc Mutz [EMAIL PROTECTED]http://marc.mutz.com/ University of Bielefeld, Dep. of Mathematics / Dep. of Physics PGP-keyID's: 0xd46ce9ab (RSA), 0x7ae55b9e (DSS/DH)
Re: MegaRAID monitoring - list
hi ya andrew... I donno... but if it did...it'd make monitoring the raid drives/controller trivial to monitor it for the various status codes... have fun alvin Andrew B. Cramer wrote: Hi Alvin, A question, is there anything that returns the status of a MegaRaid controler, operating in hardware/Raid5 mode? Thanks- Andy
Re: MegaRAID monitoring
hi ya michael I've sucessfully installed Linux on a system with a MegaRAID 466 card and was wondering what sort of monitoring software might be available to notify me in the event of a drive failure. I've collected some raid monitoring software... - credit due to it's authors... some others are also using it... - see raid_monitor.* I also wrote an server monitoring program that will send emails and pages... - need to solve a few more "problems" before gpl release... have fun alvin http://www.Linux-Consulting.com/Raid/Docs/raid_monitor.* http://www.Linux-Consulting.com/Monitor - sorta like mon
Re: Adding software with RedHat installation system?
hi joel just apply the "secure server part" to your rh-6.0 machine ? Using your current know to be working rh-6.0 system... mount /mnt/rh-secure-server-cdrom rpm -ivh --test /mnt/rh-ss-cdrom/RPMS/apache* ( and its secure server dependencies ) have fun alvin Joel Fowler wrote: I have run into a moderate dilemma. I built a RedHat 6.0 system and used software raid1 on all but the /boot filesystem. Everything was wonderful! Until... I just purchased and am now trying to install an upgrade to their RedHat 6.0 Secure Server product. This upgrade installs with their installation system which unfortunately doesn't know anything about my raid1 filesystems. Is their a workable process for maintaining software from an installation system? In my case I have a third disk and I can see a labor intensive approach which should work. I'm hoping someone has a better idea? Joel
Re: Adding software with RedHat installation system?
hi ya joel... if the prupose is to install a secure server... the parts that is "secure" such as apache and some perl and possibly libraries ?? when you do rpm -ivh --test apache*.rpm... - it will tell you what other packages you need to load... - just start with apache...and it will tell you what else you need... - the rpm package managers checks all its dependencies for you to make sure you have the right versions if the "secure server" packages does NOT complain than you don't need to worry about it... if you have a spare $200its best to get another disk and install a fresh rh-6.0 secure server on it... have fun alvin Its not quite that simple. The update is a full distribution of RedHat Linux 6.0 with the secure server components mixed in. There are hundreds of RPMs all in one directory. I don't know which RPMs need to be installed. Also, there may be additinal configuration performed by the installation procedure. Joel === At 03:45 PM 7/30/99 -0700, Alvin Oga wrote: hi joel just apply the "secure server part" to your rh-6.0 machine ? Using your current know to be working rh-6.0 system... mount /mnt/rh-secure-server-cdrom rpm -ivh --test /mnt/rh-ss-cdrom/RPMS/apache* ( and its secure server dependencies ) have fun alvin
Re: Adding software with RedHat installation system?
hi ya roeland Roeland M.J. Meyer wrote: Welcome to binary-only RPM's. You get the same thing by downloading and building the latest apache, then adding OpenSSL and mod_perl. It's a LOT less work. Take the RedHat 6.0 Secure Server back for a refund or use the CD as a $75US coaster. nah... rh-5.2 secure server was around $75... the new rh-6.0 secure server runs $150 ( see the redhat site ) and their corporate tech support is only $60,000/yr as has every distro pricing of cdrom when 95%(?) of all related s/w is "free" off the net... have fun alvin -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Joel Fowler Sent: Friday, July 30, 1999 1:50 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Adding software with RedHat installation system? I have run into a moderate dilemma. I built a RedHat 6.0 system and used software raid1 on all but the /boot filesystem. Everything was wonderful! Until... I just purchased and am now trying to install an upgrade to their RedHat 6.0 Secure Server product. This upgrade installs with their installation system which unfortunately doesn't know anything about my raid1 filesystems. Is their a workable process for maintaining software from an installation system? In my case I have a third disk and I can see a labor intensive approach which should work. I'm hoping someone has a better idea? Joel
Re: Fighting RAID0...
hi ya... I was using raid0 on rh-5.x w/ mdadd/mdcreate I upgraded to rh-6.0 and all hell broke loose but is now working fine.. there were compile or autodetect or raidstart problems with other raidtool packages - similarly with different kernels... works fine w/ linux-2.2.10 w/ raidtools-41 works w/ rh-6.0 am also running linux-2.2.6 and linux-2.2.10 w/ its repective raidtools have fun alvin
Re: Sftwr Raid w/Redhat 6.0
hi jim I'm trying to setup Raid 1 in sftwr using Redhat 6.0 w/2 identical EIDE drives (13GB) as hda hdc, but can't get it to work. Is there any definitive doc somewhere that describes how to do this w/the current kernel? http://ostenfeld.dk/~jakob/Software-RAID.HOWTO I use linux-2.2.6 or 2.2.10 for raid0/1... w/ rh-6.0 have fun alvin http://www.Linux-Consulting.com/Raid/Docs - have running debian-2.2, rh-6.0, slack-4.0, suse-6.1, cald-2.2, pht, turbocluster soon
Re: backup/redundancy solutions
hi allan, steve, using NT to backup linux destroys linux permissions... using linux to backup NTs destroys NT permissions/uid/gid - as others have stated earlier using mirror'ed disks might result in the original disk being bad/corrupted and the mirror itself to be bad...( you have the time between mirrors to find any corruption or bad data etc... - I keep a tar file ( unmirrored ) so that at least one day of backup file will/should have a last known good file - problem with 1 huge backup machine is if that one machine dies... your raid5 backup is dead to ?? ( bad power surge ) - that huge disk/system sits idle 99% of the time ?? - tape backups for offsite archives only... too slow to recover files - 20Gb ide drive is $300...( fast, cheap, good for online mirror, etc ) - we have 3 - 64Gb hardware raid as /home... ( or equivalant ) and the backups of it spread across 4 the other servers - I keep a tar file of changes... - the tar file is used to create the mirror periodically - hourly backups to keep a copy of hourly changes - daily backups/mirror to mirror todays work - the tar file will have the "changes" for however long we keep the data - if a file changes dailygoing back in time, we should find a uncorrupted file...but...not to to date ? - backup can also be corrupt or incomplete - usually NFS problems - disk 100% full problems - lack of backup permission to remotely read root protected files - if the full backup or incremental backup is bad... any subsquent backups are bad too ... - my daily incremental backups start for the last full backup - my weekly backups span 30 days and a full backup ( if this week full backup is bad...30-day incremental can ( rebuild/recover from last weeks full backup - weekly full backups reside on different disks on 3 different machines - it auto-rotates to different backup machines... ( backup_1, backup_7, backup_30, backup_wk1, backup_wk2, etc.. - i wrote my own backup script to do backups and "mirror" - have search capability too - some people use cdr to back really critical data have fun alvin # # linux backing up NTs will lose some uid/gid info from the NTs # - CAUTION...some linux kernels will corrupt the NT time stamps # # take the tar file and extract to the mirror disk or leave it alone on the backups # # backup of NT or linux... uses this same method # # # change -mtime to change between hourly/daily/weekly incremental backups # change /Backup to different disks/servers to protect against power surges, disk crashes # linux# mount /Backup linux# smbmount /WinNT/C passwd -c `mount /mnt/WinNT' -U Administrator ( for NTs ) linux# cd /mnt/WinNT ; find . -mtime -1 -type f -print | tar cvf /Backup/today.tar -T - linux# umount /mnt/WinNT ; umount /Backup bad call. i NEVER backup unix via smb. go and restore from that backup and look at your unix permissions. unless you tar first, perms are destroyed by smb. i use a backup server running linux. the nt boxes can dump to it using smb, the unix boxes use nfs v3, and the backup server takes care of the rest. this good cause it gives me a running machine, a harddrive backup, and a tape backup all with the correct full unix perms. allan Steve McPherson [EMAIL PROTECTED] said: We do the same thing here. Linux is set up to talk to NT through SAMBA. The NT server is running the Backup Exec. The Linux server backs up along with everything else. Dirk Petry [EMAIL PROTECTED] 07/08/99 10:57AM Dear Tony, our system manager here just dumps all data from a large mixed LAN on a 70 GB DLT using Seagate Backup Exec running on an NT server. It seems to work pretty well. Typical data transfer speed is 3.5 MB/s. Best regards, Dirk -- -- Dirk Petryemail: [EMAIL PROTECTED] Institut de Fisica d'Altes Energies (IFAE), Edificio Cn, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain Fax: +34-93581-1938Phone: +34-93581-2833
Re: Help with Raid 1 please.
hi abed your are showing that sda5 and sdb5 is used as /local and /loca1 you cannot use those partitions in another raid partition ( /dev/md0 ) ( take sda5 and sdb5 out of your /etc/fstab file ) in /etc/raid1.conf, you need to select partitions that are NOT used anywhere else if you want to use those two partitions, sda5 and sdb5, you need to save the contents elsewhere and create your raid1 device and restore it onto the raid1 drives... you can also symlink /etc/raid1.conf to /etc/raidtab if you like have fun alvin Abed M. Hammoud wrote: Hello, I am trying to get raid level one working on my machine. I have installed raidtools-0.50beta10-2 and I have enabled the raid as a module in my kernel. The output of the df command is: /dev/hda1 54410 2529226309 49% / /dev/sda517072834 13 16183684 0% /local /dev/sdb517072834 13 16183684 0% /local1 /dev/hda77068742 836518 5865944 12% /usr /dev/hda6 303251 23454 264136 8% /var I have put /etc/raid1.conf which contains: raiddev /dev/md0 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 device /dev/sda5 raid-disk 0 device /dev/sdb5 raid-disk 1 Now I do the follwing: root /sbin/mkraid -c /etc/raid1.conf /dev/md0 handling MD device /dev/md0 analyzing super-block disk 0: /dev/sda5, 17782752kB, raid superblock at 17782656kB /dev/sda5 is mounted mkraid: aborted So why am I getting mkraid aboarted. Also do I need to have an /etc/raidtab file... I tried this /etc/raidtab (I edited a the distributed sample file): raiddev /dev/md2 raid-level1 nr-raid-disks 2 nr-spare-disks0 chunk-size128 device/dev/sda5 raid-disk 0 device/dev/sdb5 raid-disk 1 So please what am I doing wrong. I am trying to make /local and /local1 mirror each other. Thanks for any pointers. Oh, I have RH5.2 kernel 2.0.36 (on i386 machine) - I have the raid enabled as a module. I didn't add any patches for the kernel to support raid. Do I need to add some patches ? If I do, is there a way of knowing if these patches have been applied to the kernel already ? Thanks, Abed -- Abed M. Hammoud, D.Sc. [EMAIL PROTECTED] IntellX L.L.C. Office: (303) 469-7383 Colorado, USA http://www.anatomic.com/abed
Re: upgrading a system running an older version of RAID1
hi ya alvin I have a system running a vintage 1.2.124 kernel with the autorun enabled. is that really 1.2.124 or 2.1.124 ?? In short I am booting and running the whole system off of a set of raid1 partiontions. I now want to upgrade to 2.2.1. I tried the simple thing of just rebuilding a kernel but that will not work, I just get panics and all stops. Will I have to rebuild my complete system? to run 2.1.* or 2.2.* kernels...you need to upgrade your binaries and all kinds of goodies... have fun alvin http://www.Linux-Consulting.com/Linux-2.2/upgrade*
Re: Point-of-Sale RAID application
hi ya osma for larger systems/clusters: what about the linux High Availability project ? and/or the beowolf project ? No Linux project I know of can yet provide generic failsafe clustering. am thinking...( outloud ) we can get dual hosted disk controllers... we can get dual CPU motherboards... we can get redundant power supplies... we can get removable disk drives... all we need is to "put all that into a generic linux box"... :-) the above would have two sets of "mirrored raid-5 arrays" and accessed by either dual cpu system with dual host scsi cards to get to the other one.. problem is linux does NOT support "multi-homed" servers... if home1 is down...it doesn't automatically go to home2... so put a sun/sgi on top of the linux boxes to support that function ?? If you're referring to boot possibilities when the first drive goes down, it is somewhat of an unsolved issue with software RAID, since LILO knows nothing about RAID configurations, and the BIOS even less. you can use a root-raid drive to solve that ?? ( sorta ? ) if one disk goes down, you can still boot before resorting to floppy Software RAID can not solve it because the software isn't running at the time the boot sector needs to be accessed. Hardware RAID does, as long as it has a BIOS driver. am thinking...replace the "function" of what lilo does and make it look to one of several disks for the bootup sequences which would be on /dev/sda, /dev/sdb, or /dev/sdc etc... ( thinking sorta that the boot records are just pointers ( of where to go next to find more initializations sequences... have fun alvin
Re: RAID1 experiences - docs
hi ya ingo just to add one more point, i was waiting for 2.2 to stabilize before moving the RAID driver to 2.2.x. But when patches began floating around i picked up the 2.2.0 stuff...seems to work okay for me with 2.2.1 kernel... but I did not test thoroughly think like any new sw, it will work for some and might not for others under certain cases until things get stabile... and is a continuous issue of when to release new stuff...vs living with the older know states of the prev software Still waiting for someone with better documentation skills than mine to pick the maintainance of RAID-docs up :) I'd help out where I can... if you need me to contribute - guess it's a style issue too of hwo to maintain the raid docs have fun alvin http://www.linux-Consulting.com/Raid - my idea of simple http://www.linux-Consulting.com/Amd_AutoFS/autofs-HOWTO.html
Re: RAID1 experiences -docs
hi ya "raid gurus" I've collected some docs of lastest/raid docs stuff think about 2 or three people posted their versions... ( unfortunately I did not keep copies from before ) I made my version too so that I can remember what I did to get my stuff running... - yes..am willing to help document and gather things... - am currently maintaining the autofs-how to so doing another raid-howto would not be such a big deal as long as info is availble to insert into the docs have fun alvin http://www.Linux-Consulting.com/Raid http://www.Linux-Consulting.com/Amd_AutoFS/autofs-HOWTO.html
Re: RAID1 experiences - patches
hi linux-raid folks... I just finished installing the raid stuff into linux-2.2.1 w/ rh-5.2 with all the 5.2 patch files I used raid0145-19990128-2.2.0.gz and also the latest raidtools-19990128-0.90.tar.gz it works good... however, I'm sure you folks all know that there is a header problem for the definition of BLKGETSIZE which is now defined in linux/fs.h As for notifying redhatI'd suggest sending the raid announcements and stuff to someone's attention and they might redirect it to the right people etc... ??? ( so it'd be in their hands - what they do is a separate issue ) have fun alvin ( since kernel.org is usually full ) I have a copy of the raid files at: http://www.linux-consulting.com/Raid Michael Stone wrote: On Wed, Feb 10, 1999 at 09:43:12AM -0600, Chris Price wrote: Instead of pointing fingers at Redhat, I would ask if there is someone with teh Linux-raid community that actively corresponds with redhat to let them know of current status of linux-raid? Ingo etal. seem to be doing a superb job in adding funtionality and fixing bugs quickly, but that does result in a myriad of patches being issued fairly regularily - is it Redhat's responsibility to keep track of linux-raid, or is it our responsibility to inform them of stable releases? Is anyone in the "linux-raid community" being paid to do research work for redhat? If so, they should probably keep redhat informed. If not, I think it's fair to expect redhat to do their own work. Mike Stone
