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Questions tagged [thinpool]

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Shrink LVM2 Thin Volume

I would like to shrink the space required by a thin volume used as a disk for a virtual machine (Windows). Unfortunately, the underlying disk is a USB-attached SSD and therefore mounting the NTFS ...
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1answer
1k views

Ubuntu/GlusterFS: Unable to create thinly provisioned volume from previously created pool using lvcreate

I'm testing out glusterfs, and was following this guide on creating setting up volumes. I ran into an error when trying to create a thinly provisioned volume. This is the section Create a thinly ...
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LVM: How to recover LVM thin pool / volume after failed repair?

I would like some advise with recovering from broken LVM thin pool / volumes. The step that cause my broken LVM thin is as follows: My thin pool metadata was full (99.4%), so the pool freeze. I tried ...
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1answer
1k views

Doubled hyphens in LVM /dev/mapper names

I created a thinpool LV using the following command: lvcreate --type thin-pool -l 100%VG -n lv-thinpool vg-test Now /dev/mapper has the following entries: vg--test-lv--thinpool vg--test-lv--...
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0answers
314 views

How to perform fstrim on a loop device?

I have LVM with thin-provisioning enabled. I have two almost identical thin logical volumes with ext4 file systems that slightly differs. The first volume is used entirely for storing file system. On ...
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1answer
657 views

restore disk backup by writing only non-zero blocks

Assuming you have a disk backup in raw format sda.img and /dev/sda is initially filled with zeroes, how to skip zeroes while restoring the backup? An analog of dd should detect zero block in input ...
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0answers
2k views

Could not start docker with existing LVM thin pool option

I created an LVM thin pool to be used by Docker for storage. At the docker start time, I tell it to use the thin pool. Everything worked as expected by running docker info , I noted that it is using ...