Re: [CentOS] ***Spam***Re: Recover from an fsck failure
On Fri, May 29, 2020 10:38, Simon Matter wrote: > How exactly did you create the cloned disk? > Clonezilla Live. Both systems were running clonezilla live from flash drives so there was no other disc activity on either system. > If the source disk still works and is in operation without system errors, > the cloned disk with its filesystems should really be without error as > well. > I agree. But that did not happen. And, as the cloning took place over a network, it is entirely possible that the error was introduced there. The thing takes 11 hours to complete so I am loath to redo it. But I will if needsbe. I will take the opportunity to run fsck on the system HDD while in a live dvd mode. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Recover from an fsck failure
On Thu, May 28, 2020 19:38, Robert Nichols wrote: > What output do you get from: > > file -s /dev/mapper/vg_voinet01-lv_log > lsblk -f /dev/mapper/vg_voinet01-lv_log > file -s /dev/mapper/vg_voinet01-lv_log /dev/mapper/vg_voinet01-lv_log: symbolic link TO '../DM-5' dm-f lsblk -f /dev/mapper/vg_voinet01-lv_log NAME FSTYPE LABEL UUID MOUNTPOINT vg_voinet01-lv_log (dm-5) The cloned source is a CentOS-6.6 based FreePBSX appliance using lvm. It has a single 500GB HDD. The source host is running and testing of its HDD shows no errors from the test. However, the number of recoverable read and write errors are abnormally high indicating that the HDD is approaching the end of its service life. I wish to replace it without having to rebuild the entire PBX system from scratch. All of the LVMs on the cloned HDD are ext4 file systems. The only one that failed is the log partition /var/log. If I cannot fix this then I wish to replace it with an empty fs and simply rsync the contents of /var/log from the running system to it. I need to do this anyway just prior to replacement as the PBX is running. However, it is about six years since I last had to do this and while I have my notes I would appreciate a short precis of the steps involved. This is the file system layout. /etc/fstab /dev/mapper/vg_voinet01-lv_root / ext4 defaults 1 1 UUID=302ab0fo-f985-4903-86e2-e218b1345e0/boot ext4 defaults 1 2 /dev/mapper/vg_voinet01-lv_home /home ext4 defaults 1 2 /dev/mapper/vg_voinet01-LogVol04/varext4 defaults 1 2 /dev/mapper/vg_voinet01-lv_log /var/logext4 defaults 1 2 /dev/mapper/vg_voinet01-lv_spool/var/spool ext4 defaults 1 2 /dev/mapper/vg_voinet01-lv_swap swapswap defaults 0 0 tmpfs /dev/shmtmpfs defaults,nodev,. . . parted -l Model: ATA WDC WD1002FAEX-0 (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number StartEnd Size Type File system Flags 1 1094kB 525MB524MBprimaryext4 boot 2 525MB500GB500GBprimary lvm Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-lv_spool: 68.7GB Sector size (logical/physical): 512B/512B Partition Table: loop Number StartEnd Size Type File system Flags 1 0.00B68.7GB 68.7GB primaryext4 Error: /dev/mapper/vg_voinet01-lv_log: unrecognized disk label Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-lv_home: 3355MB Sector size (logical/physical): 512B/512B Partition Table: loop Number StartEnd Size Type File system Flags 1 0.00B3355MB 3355MB primaryext4 Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-LogVol04: 336GB Sector size (logical/physical): 512B/512B Partition Table: loop Number StartEnd Size Type File system Flags 1 0.00B336GB336GBprimaryext4 Error: /dev/mapper/vg_voinet01-lv_swap: unrecognized disk label Model: Linux device-maper (linear) (dm) Disk: /dev/mapper/vg_voinet01-lv_spool: 67.1GB Sector size (logical/physical): 512B/512B Partition Table: loop Number StartEnd Size Type File system Flags 1 0.00B67.1GB 67.1GB primaryext4 I will have to do this from a live cd I presume as the shell that the failed boot process dropped me into give a "File-based locking initialisation failed." when I try to run vgdisplay or vgs. Any guidance appreciated. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] Recover from an fsck failure
This is CentOS-6x. I have cloned the HDD of a CentOS-6 system. I booted a host with that drive and received the following error: checking filesystems /dev/mapper/vg_voinet01-lv_root: clean, 128491/4096000 files, 1554114/16304000 blocks /dev/sda1: clean, 47/120016 files, 80115/512000 blocks /dev/mapper/vg_voinet01-lv_home: clean, 7429/204800 files, 90039/819200 blocks /dev/mapper/vg_voinet01-LogVol04: clean, 770219/2048 files, 34881086/8102000 blocks fsck.ext4: Bad magic number in super-block while trying to open /dev/mapper/vg_voinet01-lv_log /dev/mapper/vg_voinet01-lv_log The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsk -b 8193 /dev/mapper/vg_voinet-lv_spool: clean, 372/614400 files, 171186/2457600 blocks *** An error occurred during the file system check. *** Dropping you to a shell; the system will reboot *** when you leave the shell. Give root password for maintenance (or type Control-D to continue): I ran mke2fs to locate the backup superblocks: mke2fs -n /dev/mapper/vg_voinet01-lv_log . . . Superblock backups stored on blocks: 32768, 90304, 163840, 229376, 294912, 819200, 884736, 1605632 and ran: e2fsck -b 32768 /dev/mapper/vg_voinet01-lv_log The superblock could not be read or does not describe a correct ext2 The same thing happened for the next backup superblock addrees. And all the rest reported an invalid argument error from e2fsck. Is this recoverable? How? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS-6 cannot get kvm guest to start - network error
Need to start a virtual machine but missing nic is preventing this: I have need to recover some data from a guest on host which has been shutddown for some time. The host had one of it nic removed at some point. It is not likely to be replaced either. When I try to start the guest in question I get this: error: Failed to start domain inet09.harte-lyne.ca error: Cannot get interface MTU on 'br1': No such device I tried editing (virsh edit guest) to remove the interface: I saved the changes and tried to start the guest. but I got the same error. Then edited the guest config to say: How do I configure this guest so it will start without the missing nic? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] reconfigure centos-6.9 host to ignore missing nic
I need to work on a host which has been offline and powered down for some time. I has CentOS-6.9 installed. At some point it had two nics, one on the motherboard (still present and working) and one as an expansion card. When booted the console displays: pciehp :00:1c:0:pcie04: Failed to check link status repeatedly. How do I tell the host to ignore the missing nic or remove it from the system configuration so that the error is removed. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Are linux distros redundant?
On Wed, April 24, 2019 11:14, Simon Matter wrote: > > I'm afraid too many clouds make the wider horizon invisible :-) > At that point it is called fog. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] netmask on aliases overriden by netmask on interface
CentOS-6.10 We have a host with the following ifcfg file contents: BOOTPROTO=none BROADCAST="" DEFROUTE=yes DEVICE=eth1 . . . GATEWAY=X.Y.Z.234 IPADDR=A.B.C.2 IPV4_FAILURE_FATAL=yes NAME="LAN Link - eth1" NETMASK="255.255.255.128" NETWORK="A.B.C.0" NM_CONTROLLED=no ONBOOT=yes PREFIX=25 TYPE=Ethernet USERCTL=no And an aliased ifcfg containing this: BOOTPROTO="none" BROADCAST="192.168.8.255" DEVICE="eth1:192008001" IPADDR="192.168.8.1" IPV6INIT="no" NETMASK="255.255.255.0" NETWORK="192.168.8.0" ONPARENT="yes" However, ifconfig shows this: # ifconfig eth1:192008001 eth1:192008001 Link encap:Ethernet HWaddr 00:25:90:61:74:C1 inet addr:192.168.8.1 Bcast:192.168.8.255 Mask:255.255.255.128 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:17 Memory:feae-feb0 Which shows that the network mask is determined by the interface mask and is not overridden by the alias definition. Is this expected behaviour? Does this mean that a particular physical interface cannot belong to more than one network, or at least not to networks having differing cidr masks? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SFTP - Private/Public Authentication Keysets Beyond The First Set
On Wed, December 12, 2018 16:40, Gary Braatz wrote: > Inclusion of the -i flag and the location of the private key solved > the > problem. > You can also set up a personalised ssh config file in the ~/.ssh directory of the user employed to establish the sftp/ssh connections: #BOF # /home/myuser/.ssh/config # Host parameter is any arbitrary string. # sftp remoteuse...@first.site.com == Host site1 HostName first.site.com User remoteuserid IdentityFile /home/myuser/.ssh/id_rsa # sftp otheruse...@second.other.com == Host site2 HostName second.other.com User otheruserid IdentityFile /home/myuser/.ssh/rsa_vendor2 #EOF Then just run 'sftp site1' or 'sftp site2' to connect as required. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] Restarting Named on CentOS-6 gives SE Error
Restarting one of our named services produces this entry in the system
log file:
Oct 12 08:47:45 inet08 setroubleshoot: SELinux is preventing
/usr/sbin/named from search access on the directory . For complete
SELinux messages. run sealert -l 9eabadb9-0e03-4238-bdb8-c5204333a0bf
Checking the selinux incident reference shows this:
# sealert -l 9eabadb9-0e03-4238-bdb8-c5204333a0bf
SELinux is preventing /usr/sbin/named from search access on the
directory .
* Plugin catchall (100. confidence) suggests
***
If you believe that named should be allowed search access on the
directory by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do allow this access for now by executing:
# grep named /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp
Additional Information:
Source Contextunconfined_u:system_r:named_t:s0
Target Contextsystem_u:object_r:sysctl_vm_t:s0
Target Objects [ dir ]
Sourcenamed
Source Path /usr/sbin/named
Port
Host inet08.hamilton.harte-lyne.ca
Source RPM Packages bind-9.8.2-0.62.rc1.el6_9.5.x86_64
Target RPM Packages
Policy RPMselinux-policy-3.7.19-307el6_9.3.noarch
Selinux Enabled True
Policy Type targeted
Enforcing ModePermissive
Host Name inet08.hamilton.harte-lyne.ca
Platform Linux inet08.hamilton.harte-lyne.ca
2.6.32-696.30.1.el6.x86_64 #1 SMP Tue
May 22
03:28:18 UTC 2018 x86_64 x86_64
Alert Count 16
First SeenTue Aug 18 18:05:47 2015
Last Seen Fri Oct 12 08:47:35 2018
Local ID 9eabadb9-0e03-4238-bdb8-c5204333a0bf
Raw Audit Messages
type=AVC msg=audit(1539348455.165:43003): avc: denied { search } for
pid=31815 comm="named" scontext=unconfined_u:system_r:named_t:s0
tcontext=system_u:object_r:sysctl_vm_t:s0 tclass=dir
type=AVC msg=audit(1539348455.165:43003): avc: denied { read } for
pid=31815 comm="named" scontext=unconfined_u:system_r:named_t:s0
tcontext=system_u:object_r:sysctl_vm_t:s0 tclass=file
type=SYSCALL msg=audit(1539348455.165:43003): arch=x86_64 syscall=open
success=yes exit=ECHILD a0=7f3203a41f60 a1=8 a2=61f a3=26640
items=0 ppid=31813 pid=31815 auid=0 uid=25 gid=25 euid=25 suid=25
fsuid=25 egid=25 sgid=25 fsgid=25 tty=(none) ses=6575 comm=named
exe=/usr/sbin/named subj=unconfined_u:system_r:named_t:s0 key=(null)
Hash: named,named_t,sysctl_vm_t,dir,search
audit2allow
#= named_t ==
allow named_t sysctl_vm_t:dir search;
allow named_t sysctl_vm_t:file read;
audit2allow -R
#= named_t ==
allow named_t sysctl_vm_t:dir search;
allow named_t sysctl_vm_t:file read;
Is this a bug or an unset boolean? Or something else? It appears to
have been present for quite some time and we have no DNS resolver
issues of which we are aware.
--
*** e-Mail is NOT a SECURE channel ***
Do NOT transmit sensitive data via e-Mail
Do NOT open attachments nor follow links sent by e-Mail
James B. Byrnemailto:byrn...@harte-lyne.ca
Harte & Lyne Limited http://www.harte-lyne.ca
9 Brockley Drive vox: +1 905 561 1241
Hamilton, Ontario fax: +1 905 561 0757
Canada L8E 3C3
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Re: [CentOS] Which is better? Microsoft Exchange 2016 or Linux-based SMTP Servers?
On Thu, July 19, 2018 10:57, Valeri Galtsev wrote: > > . . . you don't need to recruit spies anymore, just roll out "free" > services, and information will trickle to you. I am old enough to know > what collection of information on everybody leads to (Hitler Germany, > Stalin Russia, ...), but I also know that the worst lesson of history > is: people do not learn lessons of history. . . > History is the practice of justifying the present by rewriting the past. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS-6.9 Bind-9.8.2 error messages
On Wed, June 20, 2018 15:37, Gordon Messmer wrote: > On 06/20/2018 11:19 AM, James B. Byrne via CentOS wrote: >> I am encountering messages similar to this in the system logfile: >> >> Jun 20 13:38:18 inet03 named[3720]: malformed transaction: >> dynamic/efa1f375d76194fa51a3556a97e641e61685f914d446979da50a551a4333ffd7.mkeys.jnl >> last serial 103538 != transaction first serial 103361 >> >> I have no idea what this means, what caused it, nor how to fix it. >> Any suggestions relevant to any of the above are most welcome. >> > > I think I've seen this before. Are you auto-signing a zone for > DNSSEC, Yes > and does that zone appear in multiple views? No I stopped and restarted the BIND daemon and this appears to have corrected whatever issue was causing the errors to be generated. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS-6.9 Bind-9.8.2 error messages
I am encountering messages similar to this in the system logfile: Jun 20 13:38:18 inet03 named[3720]: malformed transaction: dynamic/efa1f375d76194fa51a3556a97e641e61685f914d446979da50a551a4333ffd7.mkeys.jnl last serial 103538 != transaction first serial 103361 I have no idea what this means, what caused it, nor how to fix it. Any suggestions relevant to any of the above are most welcome. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrnemailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
