Portál AbcLinuxu, 14. května 2025 02:32
Zdravím,
rad bych pozadal o pomoc s pripojenim degaradovaneho LVM RAID 1 pole.
Ze ktereho potrebuji zazalohovat data.
Puvodne kdysi davno jsem mel dva HDD sda(320GB) a sdb(320GB) disky,
nainstaloval jsem podle jiz nedohledatelneho navodu Debian na LVM s RAID1 takto:
sda i sdb
1 pri 250MB raid
6 log 3,8GB swap
5 log 1GB lvm
7 log 315GB raid
md0 sda1 + sdb1 /boot
md1 sda7 + sdb7 LVM --(root 967MB, usr 4GB, var 10GB, 300GB home)
Pak jsem prikoupil jeden HDD (sdc) 1TB , a nemel jsem cas to predelavat tak jsem udelal clone HDD sda-to-sdc.
A doted jsem provozoval pouze SDC HDD,(sda a sdb hdd byly odpojeny), nez prisel pad systemu po restartu PC.
Muj zachranny plan spocival vtom ze jsem pripojil sda a sdb HDD a znich nabootoval OS.
Pripojil jsem sdc s tim ze udelam mount sdc a zkopiruji data, udelam format sdc a nainstaluji novy OS a opustim LVM s RAID.
Bohuzel se nepovedlo:
mount -t ext4 /dev/sdc6 /mnt
mount: /dev/sdc6 already mounted or /mnt busy
Pokud budete mit trpelivost se nad tim zamyslet a poradit budu rad.
Diky, v priloze vypis fdisk -l
Řešení dotazu:
V degradovanem, 1TB hdd je jen jeden.
Dekuji za reaci, a omlouvam se ze reaguji se spozdenim, byl jsem 3 dny pryc.
Pokus o zastaveni pole, odmontovani a nakonec o zkopirovani rozlozeni sda to sdc.
Nic nevedlo k posunu :(
root@aaa:/# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sdc6[0]
307587960 blocks super 1.2 [2/1] [U_]
md0 : active raid1 sdc1[0]
242676 blocks super 1.2 [2/1] [U_]
unused devices: <none>
root@aaa:/# mdadm --stop /dev/md0
mdadm: failed to stop array /dev/md0: Device or resource busy
Perhaps a running process, mounted filesystem or active volume group?
root@aaa:/# umount /dev/md1
umount: /dev/md1: not mounted
root@aaa:/# mdadm --stop /dev/md1
mdadm: failed to stop array /dev/md1: Device or resource busy
Perhaps a running process, mounted filesystem or active volume group?
root@celler:/home/zimi# fdisk -l /dev/md1
Disk /dev/md1: 315.0 GB, 314970071040 bytes
2 heads, 4 sectors/track, 76896990 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/md1 doesn't contain a valid partition table
root@aaa:/i# sfdisk -d /dev/sda | sfdisk /dev/sdc
Warning: extended partition does not start at a cylinder boundary.
DOS and Linux will interpret the contents differently.
Checking that no-one is using this disk right now ...
BLKRRPART: Device or resource busy
This disk is currently in use - repartitioning is probably a bad idea.
Umount all file systems, and swapoff all swap partitions on this disk.
Use the --no-reread flag to suppress this check.
Use the --force flag to overrule all checks.
Když tak pomocí "vgchange -a n" se dá volgroup deaktivovat.
Diky za reakci,
# vgchange -a n
Can't deactivate volume group "vg_tmp" with 1 open logical volume(s)
Can't deactivate volume group "vg_main" with 4 open logical volume(s)
# pvs
PV VG Fmt Attr PSize PFree
/dev/md1 vg_main lvm2 a- 293.34g 0
/dev/sda5 vg_tmp lvm2 a- 952.00m 0
/dev/sdb5 vg_tmp lvm2 a- 952.00m 0
# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sdc6[0]
307587960 blocks super 1.2 [2/1] [U_]
md0 : active raid1 sdc1[0]
242676 blocks super 1.2 [2/1] [U_]
Diky za tip, myslim ze problem vznikl kdyz jsem klonoval disk 320GB na 1000GB. Rozdeleni je uplne jine oproti originalu :( (viz vypis nize)
V prvnim kroku bych chtel na disku sdc zbavit RAID1, ale i kdyz hdd neni pripojen tak mi odmita zrusit pole.
mdadm -S /dev/md1
mdadm: failed to stop array /dev/md1: Device or resource busy
Perhaps a running process, mounted filesystem or active volume group?
Disk /dev/sdb: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x887c56ca
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 31 242688 fd Linux raid autodetect
Partition 1 does not end on cylinder boundary.
/dev/sdb2 31 38914 312326145 5 Extended
/dev/sdb5 499 621 975872 8e Linux LVM
/dev/sdb6 31 499 3760128 82 Linux swap / Solaris
/dev/sdb7 621 38914 307589120 fd Linux raid autodetect
Partition table entries are not in disk order
Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0001a994
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 31 242688 fd Linux raid autodetect
Partition 1 does not end on cylinder boundary.
/dev/sdc2 31 121602 976518144 f W95 Ext'd (LBA)
/dev/sdc5 31 83308 668925952 82 Linux swap / Solaris
/dev/sdc6 83309 121602 307589848 fd Linux raid autodetect
Tiskni
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