3
votes
1answer
928 views

Is it possible to change the sector size of a partition for zfs raidz pool in linux?

I've been migrating a zfs raidz pool on linux to new discs via virtual devices which were sparse files. I've used partitions on the discs as the discs are different sizes of 1.9T each. The last disc ...
2
votes
1answer
4k views

extending a partition by resize2fs

I have a 4 GB SD card. Before the image load root@ubuntu# fdisk -l Disk /dev/sdb: 3965 MB, 3965190144 bytes 49 heads, 48 sectors/track, 3292 cylinders, total 7744512 sectors Units = sectors of 1 * ...
9
votes
1answer
2k views

Defragmentation of LVM2 logical volumes

Question: Is there a tool supporting de-fragmentation of LVM2 logical volumes ? (Making their extents into consistent sequences) Preferably by defining desired order of extents (something like ...
15
votes
4answers
9k views

Clear unused space with zeros (ext3,ext4)

How to clear unused space with zeros ? (ext3,ext4) I'm looking for something smarter than cat /dev/zero > /mnt/X/big_zero ; sync; rm /mnt/X/big_zero Like FSArchiver is looking for "used space" ...
2
votes
1answer
167 views

What is the smallest LVM2 logical volume unit?

Could you ensure me that minimal LVM2 size Unit is one extent to which all sizes are rounded up ? Is 4MiB the default size of extent for LVM2 ? Can it be configurable or is it the only size ? Small ...
6
votes
2answers
892 views

How to properly unplug/plug removable LVM2 device?

How to properly unplug (remove) and later plug (insert) removable (hot-plug, usb etc) storage device with LVM2 on it ? I've found this note Remove (unplug, eject): lvchange -an ...
3
votes
1answer
2k views

How to enable (format) a disk in SunOS then add it to a DiskGroup?

SERVER # vxdisk list DEVICE TYPE DISK GROUP STATUS c1t0d0s2 auto:none - - online invalid c1t1d0s2 auto:none - - ...
22
votes
7answers
4k views

How can I use DD to migrate data from an old drive to a new drive?

I am upgrading the internal SATA hard drive on my laptop from a 40G drive to a 160G drive. I have a Linux/Ubuntu desktop which has a SATA card. I would actually like to do the same thing for a couple ...