See following sections in lustre manual : 18.2. Backing Up and Restoring an MDT or OST (ldiskfs Device Level) 18.3. Backing Up an OST or MDT (Backend File System Level)
Alex. From: lustre-discuss <[email protected]> on behalf of Lana Deere <[email protected]> Date: Monday, December 9, 2024 at 14:14 To: [email protected] <[email protected]> Subject: [lustre-discuss] migrating mgs and mdt I am managing a Lustre 2. 12. 6 system where I have just discovered that the MGS and MDTs are on single disks rather than RAIDed drives. /dev/sda5 on /mnt/lustre_mgs type lustre (ro,svname=MGS,nosvc,mgs,osd=osd-ldiskfs,. . . ) /dev/sdc1 on /mnt/lustre_mdt_abc ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization. ZjQcmQRYFpfptBannerEnd I am managing a Lustre 2.12.6 system where I have just discovered that the MGS and MDTs are on single disks rather than RAIDed drives. /dev/sda5 on /mnt/lustre_mgs type lustre (ro,svname=MGS,nosvc,mgs,osd=osd-ldiskfs,...) /dev/sdc1 on /mnt/lustre_mdt_abc type lustre (ro,svname=lstr_abc-MDT0000,mgsnode=10.58.255.254@o2ib,osd=osd-ldiskfs,...) /dev/sdb1 on /mnt/lustre_mdt_def type lustre (ro,svname=lstr_def-MDT0000,mgsnode=10.58.255.254@o2ib,osd=osd-ldiskfs,...) Is there any way to migrate those three metadata partitions to other partitions which would presumably be located on RAIDed drives? For example, would it work to set up the new RAIDed drives and use dd to clone the partitions into partitions on the RAID? .. Lana ([email protected]<mailto:[email protected]>)
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