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Note about e2image

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Vitaliy Filippov 2020-08-14 18:28:12 +03:00
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@ -36,7 +36,8 @@ and seems to handle fsyncs correctly.
9. Reboot. 9. Reboot.
10. Install dm-era tools (`era_invalidate`) with `apt-get install thin-provisioning-tools` on your target host. 10. Install dm-era tools (`era_invalidate`) with `apt-get install thin-provisioning-tools` on your target host.
11. Install `era_copy` and `era_apply` (`make install` from this repository) on both hosts (target host and backup host). 11. Install `era_copy` and `era_apply` (`make install` from this repository) on both hosts (target host and backup host).
12. Do an initial full partition backup with block-level copy. 12. Do an initial full partition backup with block-level copy. For example, to copy an ext4 filesystem
to another host over ssh run: `ssh root@host "e2image -f -p -ra /dev/mapper/root_era - | gzip" | gzip -d | cp --sparse=always /dev/stdin rootfs.bin`.
13. Now you can use `backup.sh` to perform incremental backups of the dm-era device 13. Now you can use `backup.sh` to perform incremental backups of the dm-era device
over ssh from the backup host. Just change variables at the top of the script so it matches over ssh from the backup host. Just change variables at the top of the script so it matches
your device configuration. your device configuration.