Discuss August 2008

discuss@lists.centos.org

271 participants
280 discussions

Problem copying files to flash drive
by MHR 19 Aug '08

19 Aug '08

I had an interesting experience this weekend backing up some flash drives to another flash drive on my CentOS 5.2 home desktop. My son had two 256MB flash drives and one 1GB flash drive that he wanted backed up onto his newer 2GB flash drive. I used rsync to copy the two smaller ones to the big one without any trouble, but when I tried to backup the 1GB files to the 2GB drive, I started getting massive "no space on disk" errors. After doing this several times, I copied to files to a directory on my hard drive and then tried to copy the files again from there to the 2GB flash drive (removing all files on the flash drive in between each iteration). Same problem. Then I did a cp -R of the directory itself from my hard drive to the flash drive, and voila! All files copied, no problems, except that now the files are in a new directory of the same name on the flash drive. The total number of files in the base directory is 171, and the total size of the files copied was a little over 500MB, so I believe that everything should have fit just fine. The commands I used that failed were 'rsync -av /media/<drive_name>/ /media/<2GB_drive_name>/' (which worked for the two smaller drives but not the bigger one), and then (after using the same command to copy the files to my hard drive), 'rsync -av ./ /media/<2GB_drive_name>/' The command that worked was 'cp -R . /media/<2GB_drive_name>/' The only thing that comes to mind is that there were a lot of files with ._xxx names on the 1GB flash drive, so I'm wondering if they just overloaded the capacity of the flash drive's FAT32 root directory name space, but I thought that limit was 512 entries, not less than 171. Any ideas? Thanks. mhr

4 6

Boot CentOS 5 to command line
by ABBAS KHAN 19 Aug '08

19 Aug '08

Hi fellows, Pretty new to CentOS. I was trying to find a way to boot CentOS into command prompt instead of GUI (or without loading any services). Tried using 'Crl+Alt+F1' at the boot process, but, that holds the screen at mounting and doing fstab and doesn't proceed further. Is there anyother way to boot CentOS into command prompt without using Rescue option from the installation CD? Thanks. Best.

7 7

Win2000 / Win2003 ADS dnsHostName and servicePrincipalName
by Rob Townley 19 Aug '08

19 Aug '08

Sharing my experience with SSO of Linux clients to Active Directory. Over the last 2 years or so, i had a great deal of trouble getting and _keeping_ authentication to our Win2000/Win2003 Active Directory system working from OpenSUSE and CentOS clients. ADS authentication would work until reboot, a few days, a month max. We'll see how long this lasts. Another problem was dealing with the fact that i setup dns in AD using aMixedCaseDomain.com name. Had to add all variants to the [realms] and [domain_realm] names to /etc/krb5.conf. snslatc.hp.com, snslatc.HP.com, SNSLATC.HP.COM ... Over the weekend i gave up on CentOS and tried Fedora because Fedora repositories have SaMBa 3.2, but CentOS only has 3.0. SaMBa 3.2 supports sasl sign and seal (hashing and encryption) and supports NTLMv2 better and using winbind with ADS. Still had problems with Fedora. Since i had to change the hostname in the middle of the process and update krb5.conf as mentioned above and i noticed that somehow dNSHostName in Active Directory was set to "HOST/localhost:localdomain" which clearly cannot be correct. So i used SysInternals LDAP Explorer (ADExplorer.exe) to change the entry in ActiveDirectory to remove any reference to localhost. Unless i changed /etc/hosts to not have rmonster in "127.0.0.1 localhost.localdomain localhost rmonster", deleted from WinAD and rejoined. dNSHostName: rmonster.snslatc.hp.com servicePrincipalName: CIFS/rmonster.snslatc.hp.com servicePrincipalName: CIFS/rmonster servicePrincipalName: HOST/rmonster.snslatc.hp.com servicePrincipalName: HOST/rmonster Is the line "servicePrincipalName: CIFS/rmonster.snslatc.hp.com" only required when you want your Linux box shares to show to other clients (Windows)? Successfully joined and authenticating using Fedora, but really want to use CentOS and have group policy support from likewise.

4 4

gftp crashing on IPv6 to vsftp
by Robert Moskowitz 19 Aug '08

19 Aug '08

I am running vsftp pretty much 'out of the box', though I turned off IPv4 and have it listening on IPv6. I have stopped ip6tables, as the simple rule to enable port 21 is not allowing gftp to connect (pasv mode, I think). gftp to the IPv6 address, it connects and gets a directory listing. I am running gftp from my normal login userid, connecting to my normal login userid on the server. But when I try to download or upload a file, gftp just crashes. Nothing in /var/log on either system. Any advice?

3 3

mirroring with LVM?
by Gordon McLellan 19 Aug '08

19 Aug '08

I'm pulling my hair out trying to setup a mirrored logical volume. lvconvert tells me I don't have enough free space, even though I have hundreds of gigabytes free on both physical volumes. Command: lvconvert -m1 /dev/vg1/iscsi_deeds_data Insufficient suitable allocatable extents for logical volume : 10240 more required Any ideas? Thanks!, Gordon Here's the output from the lvconvert with verbose and debugging turned on: # lvconvert -vvv -d -m1 /dev/vg1/iscsi_deeds_data Processing: lvconvert -vvv -d -m1 /dev/vg1/iscsi_deeds_data O_DIRECT will be used Setting global/locking_type to 1 File-based locking selected. Setting global/locking_dir to /var/lock/lvm Setting activation/mirror_region_size to 512 Getting target version for linear dm version OF [16384] dm versions OF [16384] Getting target version for striped dm versions OF [16384] Checking for existing volume group "vg1" Locking /var/lock/lvm/V_vg1 WB /dev/ramdisk: Not using O_DIRECT Opened /dev/ramdisk RW /dev/ramdisk: block size is 1024 bytes /dev/ramdisk: No label detected Closed /dev/ramdisk Opened /dev/md0 RW O_DIRECT /dev/md0: block size is 1024 bytes /dev/md0: No label detected Closed /dev/md0 Opened /dev/root RW O_DIRECT /dev/root: block size is 4096 bytes /dev/root: No label detected Closed /dev/root /dev/ram: Not using O_DIRECT Opened /dev/ram RW /dev/ram: block size is 1024 bytes /dev/ram: No label detected Closed /dev/ram Opened /dev/md1 RW O_DIRECT /dev/md1: block size is 4096 bytes /dev/md1: No label detected Closed /dev/md1 Opened /dev/dm-1 RW O_DIRECT /dev/dm-1: block size is 4096 bytes /dev/dm-1: No label detected Closed /dev/dm-1 /dev/ram2: Not using O_DIRECT Opened /dev/ram2 RW /dev/ram2: block size is 1024 bytes /dev/ram2: No label detected Closed /dev/ram2 Opened /dev/md2 RW O_DIRECT /dev/md2: block size is 4096 bytes /dev/md2: lvm2 label detected lvmcache: /dev/md2: now orphaned /dev/md2: Found metadata at 8192 size 872 for vg0 (lRcg12-Pt0L-NYUv-zJfF-GT62-UKnP-VmhtD0) lvmcache: /dev/md2: now in VG vg0 lvmcache: /dev/md2: setting vg0 VGID to lRcg12Pt0LNYUvzJfFGT62UKnPVmhtD0 lvmcache: /dev/md2: VG vg0: Set creation host to incognito.mcch.org. Closed /dev/md2 Opened /dev/dm-2 RW O_DIRECT /dev/dm-2: block size is 4096 bytes /dev/dm-2: No label detected Closed /dev/dm-2 /dev/ram3: Not using O_DIRECT Opened /dev/ram3 RW /dev/ram3: block size is 1024 bytes /dev/ram3: No label detected Closed /dev/ram3 Opened /dev/dm-3 RW O_DIRECT /dev/dm-3: block size is 4096 bytes /dev/dm-3: No label detected Closed /dev/dm-3 /dev/ram4: Not using O_DIRECT Opened /dev/ram4 RW /dev/ram4: block size is 1024 bytes /dev/ram4: No label detected Closed /dev/ram4 Opened /dev/sda4 RW O_DIRECT /dev/sda4: block size is 512 bytes /dev/sda4: lvm2 label detected lvmcache: /dev/sda4: now orphaned /dev/sda4: Found metadata at 18432 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) lvmcache: /dev/sda4: now in VG vg1 lvmcache: /dev/sda4: setting vg1 VGID to rthUcYKiTwzqwYWgg7rG54wTmZUYY6zA lvmcache: /dev/sda4: VG vg1: Set creation host to incognito.mcch.org. /dev/ram5: Not using O_DIRECT Opened /dev/ram5 RW /dev/ram5: block size is 1024 bytes /dev/ram5: No label detected Closed /dev/ram5 /dev/ram6: Not using O_DIRECT Opened /dev/ram6 RW /dev/ram6: block size is 1024 bytes /dev/ram6: No label detected Closed /dev/ram6 /dev/ram7: Not using O_DIRECT Opened /dev/ram7 RW /dev/ram7: block size is 1024 bytes /dev/ram7: No label detected Closed /dev/ram7 /dev/ram8: Not using O_DIRECT Opened /dev/ram8 RW /dev/ram8: block size is 1024 bytes /dev/ram8: No label detected Closed /dev/ram8 /dev/ram9: Not using O_DIRECT Opened /dev/ram9 RW /dev/ram9: block size is 1024 bytes /dev/ram9: No label detected Closed /dev/ram9 /dev/ram10: Not using O_DIRECT Opened /dev/ram10 RW /dev/ram10: block size is 1024 bytes /dev/ram10: No label detected Closed /dev/ram10 /dev/ram11: Not using O_DIRECT Opened /dev/ram11 RW /dev/ram11: block size is 1024 bytes /dev/ram11: No label detected Closed /dev/ram11 /dev/ram12: Not using O_DIRECT Opened /dev/ram12 RW /dev/ram12: block size is 1024 bytes /dev/ram12: No label detected Closed /dev/ram12 /dev/ram13: Not using O_DIRECT Opened /dev/ram13 RW /dev/ram13: block size is 1024 bytes /dev/ram13: No label detected Closed /dev/ram13 /dev/ram14: Not using O_DIRECT Opened /dev/ram14 RW /dev/ram14: block size is 1024 bytes /dev/ram14: No label detected Closed /dev/ram14 /dev/ram15: Not using O_DIRECT Opened /dev/ram15 RW /dev/ram15: block size is 1024 bytes /dev/ram15: No label detected Closed /dev/ram15 Opened /dev/sdb4 RW O_DIRECT /dev/sdb4: block size is 512 bytes /dev/sdb4: lvm2 label detected lvmcache: /dev/sdb4: now orphaned /dev/sdb4: Found metadata at 4608 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) lvmcache: /dev/sdb4: now in VG vg1 (rthUcYKiTwzqwYWgg7rG54wTmZUYY6zA) Opened /dev/sdc1 RW O_DIRECT /dev/sdc1: block size is 1024 bytes /dev/sdc1: No label detected Closed /dev/sdc1 /dev/sda4: lvm2 label detected /dev/sda4: Found metadata at 18432 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) /dev/sdb4: lvm2 label detected /dev/sdb4: Found metadata at 4608 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) /dev/sda4: lvm2 label detected /dev/sda4: Found metadata at 18432 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) /dev/sdb4: lvm2 label detected /dev/sdb4: Found metadata at 4608 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) Read vg1 metadata (10) from /dev/sda4 at 18432 size 1715 /dev/sda4: lvm2 label detected /dev/sda4: Found metadata at 18432 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) /dev/sdb4: lvm2 label detected /dev/sdb4: Found metadata at 4608 size 1715 for vg1 (rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA) Read vg1 metadata (10) from /dev/sdb4 at 4608 size 1715 /dev/sda4 0: 0 15360: virt(0:0) /dev/sda4 1: 15360 10240: opadata(0:0) /dev/sda4 2: 25600 10240: iscsi_deeds_data(0:0) /dev/sda4 3: 35840 23040: virt(15360:0) /dev/sda4 4: 58880 160513: NULL(0:0) /dev/sdb4 0: 0 219393: NULL(0:0) Archiving volume group "vg1" metadata (seqno 10). Expiring archive /etc/lvm/archive/vg1_00005.vg Allowing allocation on /dev/sda4 start PE 58880 length 160513 Allowing allocation on /dev/sdb4 start PE 0 length 219393 Parallel PVs at LE 0 length 10240: /dev/sda4 Insufficient suitable allocatable extents for logical volume : 10240 more required Unlocking /var/lock/lvm/V_vg1 Closed /dev/sda4 Closed /dev/sdb4 Here's more of my lvm specs: # pvdisplay -v Scanning for physical volume names --- Physical volume --- PV Name /dev/sda4 VG Name vg1 PV Size 857.01 GB / not usable 1.97 MB Allocatable yes PE Size (KByte) 4096 Total PE 219393 Free PE 160513 Allocated PE 58880 PV UUID zLqW68-3oW4-Mi8H-P2ti-ltnG-WA0C-CRJS1e --- Physical volume --- PV Name /dev/sdb4 VG Name vg1 PV Size 857.01 GB / not usable 2.16 MB Allocatable yes PE Size (KByte) 4096 Total PE 219393 Free PE 219393 Allocated PE 0 PV UUID VuPgY3-kf7s-aFyO-2Nof-G2Sw-xkqN-kwjAnz --- Physical volume --- PV Name /dev/md2 VG Name vg0 PV Size 73.28 GB / not usable 29.88 MB Allocatable yes PE Size (KByte) 32768 Total PE 2344 Free PE 1844 Allocated PE 500 PV UUID tRNWez-5Yi4-ODco-2hIN-KD11-bsND-qEUxAk # vgdisplay -v Finding all volume groups Finding volume group "vg1" --- Volume group --- VG Name vg1 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 10 VG Access read/write VG Status resizable MAX LV 0 Cur LV 3 Open LV 2 Max PV 0 Cur PV 2 Act PV 2 VG Size 1.67 TB PE Size 4.00 MB Total PE 438786 Alloc PE / Size 58880 / 230.00 GB Free PE / Size 379906 / 1.45 TB VG UUID rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA --- Logical volume --- LV Name /dev/vg1/virt VG Name vg1 LV UUID N47Gdi-hdHO-jH8a-oBgP-4zvp-q8Uf-zgAQc0 LV Write Access read/write LV Status available # open 0 LV Size 150.00 GB Current LE 38400 Segments 2 Allocation inherit Read ahead sectors 0 Block device 253:1 --- Logical volume --- LV Name /dev/vg1/opadata VG Name vg1 LV UUID NGL22V-JcPj-sLBf-CJaK-ps25-QCdz-EXfNK7 LV Write Access read/write LV Status available # open 1 LV Size 40.00 GB Current LE 10240 Segments 1 Allocation contiguous Read ahead sectors 0 Block device 253:2 --- Logical volume --- LV Name /dev/vg1/iscsi_deeds_data VG Name vg1 LV UUID WBwyFc-RJnp-z8Cl-hyjS-8AIT-psUc-nj64uS LV Write Access read/write LV Status available # open 1 LV Size 40.00 GB Current LE 10240 Segments 1 Allocation contiguous Read ahead sectors 0 Block device 253:3 --- Physical volumes --- PV Name /dev/sda4 PV UUID zLqW68-3oW4-Mi8H-P2ti-ltnG-WA0C-CRJS1e PV Status allocatable Total PE / Free PE 219393 / 160513 PV Name /dev/sdb4 PV UUID VuPgY3-kf7s-aFyO-2Nof-G2Sw-xkqN-kwjAnz PV Status allocatable Total PE / Free PE 219393 / 219393 Finding volume group "vg0" --- Volume group --- VG Name vg0 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size 73.25 GB PE Size 32.00 MB Total PE 2344 Alloc PE / Size 500 / 15.62 GB Free PE / Size 1844 / 57.62 GB VG UUID lRcg12-Pt0L-NYUv-zJfF-GT62-UKnP-VmhtD0 --- Logical volume --- LV Name /dev/vg0/root VG Name vg0 LV UUID av2DIv-p1Ns-pgPW-zN8U-fHbp-tMps-Q5b8dH LV Write Access read/write LV Status available # open 1 LV Size 15.62 GB Current LE 500 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0 --- Physical volumes --- PV Name /dev/md2 PV UUID tRNWez-5Yi4-ODco-2hIN-KD11-bsND-qEUxAk PV Status allocatable Total PE / Free PE 2344 / 1844 # lvdisplay -v Finding all logical volumes --- Logical volume --- LV Name /dev/vg1/virt VG Name vg1 LV UUID N47Gdi-hdHO-jH8a-oBgP-4zvp-q8Uf-zgAQc0 LV Write Access read/write LV Status available # open 0 LV Size 150.00 GB Current LE 38400 Segments 2 Allocation inherit Read ahead sectors 0 Block device 253:1 --- Logical volume --- LV Name /dev/vg1/opadata VG Name vg1 LV UUID NGL22V-JcPj-sLBf-CJaK-ps25-QCdz-EXfNK7 LV Write Access read/write LV Status available # open 1 LV Size 40.00 GB Current LE 10240 Segments 1 Allocation contiguous Read ahead sectors 0 Block device 253:2 --- Logical volume --- LV Name /dev/vg1/iscsi_deeds_data VG Name vg1 LV UUID WBwyFc-RJnp-z8Cl-hyjS-8AIT-psUc-nj64uS LV Write Access read/write LV Status available # open 1 LV Size 40.00 GB Current LE 10240 Segments 1 Allocation contiguous Read ahead sectors 0 Block device 253:3 --- Logical volume --- LV Name /dev/vg0/root VG Name vg0 LV UUID av2DIv-p1Ns-pgPW-zN8U-fHbp-tMps-Q5b8dH LV Write Access read/write LV Status available # open 1 LV Size 15.62 GB Current LE 500 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0

3 2

Lightweight MTA for XEN CentOS guests
by Brett Serkez 18 Aug '08

18 Aug '08

All, For a production environment, I'd like to setup CentOS XEN guests as lightweight as possible. I'd like the XEN guests to be able to send nightly email as all CentOS servers do, but there is no reason to run a mail server as the CentOS Dom0 already has an email server running that can act as an email smart host. The options that seem most appealing to me are either ssmtp or sendmail minimally configured to only run the queuing submission agent. As far as ssmtp, I have not as yet found an CentOS RPM, presumably a Fedora RPM might be suitable. The down side of ssmtp is the lack of queuing should the smart host not be available, not likely but it is possible the email daemon could crash or be down for maintenance or other reason. As far as sendmail, it is simple to switch off the sendmail daemon and only run the queuing submission agent: 1) edit /etc/sysconfig/sendmail and set "DAEMON=no" 2) edit /etc/mail/submit.mc and set FEATURE(`msp', `[IP.of.relayhost]')dnl and of course add an alias for root. Does anyone on this list have experience running a minimal MTA? What other options/software should I be looking at? Any other insights, suggestions or insights? Both the Dom0 and guests are CentOS 5.2. Thanks in advance, Brett

5 6

Re: [CentOS] Re: DRBD 8.2 crashes CentOS 5.2 on rsync from remote host
by Toshaan Bharvani 18 Aug '08

18 Aug '08

Scott Silva wrote: > on 8-14-2008 12:55 AM Chris Miller spake the following: >> nate wrote: >>> Chris Miller wrote: >>>> I've got a pair of HA servers I'm trying to get into production. >>>> Here are some specs : >>>> >>> >>> [..] >>>> [root@haws1 ~]# BUG: unable to handle kernel paging request at >>>> virtual address c >>> >>> This typically means bad RAM >> >> While I won't rule this out, my local hardware vendor does a 48 hour >> burn-in including a full gamut of tests (including memory) before >> handing over the servers. These servers are less than two weeks old... >> >> Seems like this is a common type of error in some situations. I tried >> to boot in kexec/kdump mode (CentOS 5 replacement for diskdumputils), >> but the e1000 driver isn't seeing the NICs after a reboot via the >> "capture kernel", so I can't replicate the (rsync induced) problem >> and perform kernel debugging. I'll explore this more tomorrow. >> >> Chris > When the servers are shipped to you, do you open them and make sure > all modules are seated completely, and haven't been dislodged by the > shipping? > > > > ------------------------------------------------------------------------ > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > why not try a memtest, you can download a bootable cd/usb and do a check _________________________________________________________________ News, entertainment and everything you care about at Live.com. Get it now! http://www.live.com/getstarted.aspx

2 1

finding older rpms
by Rogelio 18 Aug '08

18 Aug '08

I'm on a fairly old RHEL box, when I "cat /proc/version", I get the following: Linux version 2.4.21-4.ELsmp (bhcompile(a)daffy.perf.redhat.com) (gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-20)) At this stage, I guess I don't have 'yum', so where exactly do I get the individual RPMs? I went to DAG to find some stuff I needed, but some of the rpms at http://dag.wieers.com/rpm/packages for RHEL 3 were not available.

3 2

file manager over ssh
by Linux Man 18 Aug '08

18 Aug '08

Hello. I need to copy several file from one PC to another over Internet, both using CentOS. What file manager that works over console do you recommend me? Thanks at all Best Regards

8 11

OT NIS Question
by Clint Dilks 18 Aug '08

18 Aug '08

Hi People, I have been been using a NIS setup that I inherited for some time now and my eventual goal is to replace it with LDAP. But in the mean time I am looking at migrating some servers to new equipment and wondered if it is possible to have a single ypserv install servicing two NISDOMAINS? In this particular situation it would be a situation where for one domain the server would be a master and the other a slave. My initial research can't find anyone doing something similar. So can anyone familiar with NIS advise as to whether what I am thinking of is plausible ?

1 0

← Newer
1
...
13
14
15
16
17
18
19
...
28
Older →

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss August 2008