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.
--
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