LVM : system boot halts with error's as follows : reached low water mark for data device , : Switching pool to out-of-data-space mode
Issue
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Sytem receiving below error during boot .
# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert LV Tags Devices pool00 boot twi-aotz-- 6.78g 100% 37.84 pool00_tdata(0) root boot Vwi-aotz-- 13.20g pool00 47.68
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Server does not booting, enters in emergency mode.
kernel: device-mapper: thin: 253:2: reached low water mark for data device: sending event. kernel: device-mapper: thin: 253:2: switching pool to out-of-data-space (queue IO) mode kernel: device-mapper: thin: 253:2: switching pool to out-of-data-space (error IO) mode kernel: XFS (dm-3): metadata I/O error in "xfs_buf_ioend+0x2af/0x620 [xfs]" at daddr 0x1ce81000 len 32 error 28 kernel: XFS (dm-3): I/O error (0x1) detected at xfs_buf_ioend+0x4f7/0x620 [xfs] (fs/xfs/xfs_buf.c:1265). Shutting down filesystem kernel: XFS (dm-3): Please unmount the filesystem and rectify the problem(s) kernel: XFS (dm-3): log mount/recovery failed: error -28 kernel: XFS (dm-3): log mount failed mount[665]: mount: /sysroot: mount(2) system call failed: No space left on device.
Environment
- Red Hat Enterprise Linux Server 6.4+
- lvm2
- Thin provision
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