https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-14167 Lustre <p>Using 'lfs mirror read' on a stale mirror may return fewer bytes than it should.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>k:lustre# rm f0 f0.mirror~2 k:lustre# dd if=/dev/urandom of=f0 bs=1M count=1 1+0 records in 1+0 records out 1048576 bytes (1.0 MB) copied, 0.0147195 s, 71.2 MB/s k:lustre# md5sum f0 f48d2d25f34b5afe5ea60b48da362b8d f0 k:lustre# lfs mirror extend -N -p ddn_ssd f0 k:lustre# echo XXX &gt; f0 k:lustre# lfs mirror read --mirror-id=1 f0 | wc 1 1 4 k:lustre# lfs mirror read --mirror-id=2 f0 | wc 0 1 4 k:lustre# lfs mirror split --mirror-id=2 f0 k:lustre# stat f0 f0.mirror~2 File: ‘f0’ Size: 4 Blocks: 8 IO Block: 4194304 regular file Device: 2c54f966h/743766374d Inode: 144115205289279535 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2020-12-01 12:45:59.000000000 -0600 Modify: 2020-12-01 12:46:23.000000000 -0600 Change: 2020-12-01 12:46:23.000000000 -0600 Birth: - File: ‘f0.mirror~2’ Size: 1048576 Blocks: 2048 IO Block: 4194304 regular file Device: 2c54f966h/743766374d Inode: 144115205289279538 Links: 1 Access: (0600/-rw-------) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2020-12-01 12:46:57.000000000 -0600 Modify: 2020-12-01 12:46:57.000000000 -0600 Change: 2020-12-01 12:46:57.000000000 -0600 Birth: - k:lustre# md5sum f0.mirror~2 f48d2d25f34b5afe5ea60b48da362b8d f0.mirror~2 </pre> </div></div> LU-14167

lfs mirror read returns wrong number of bytes

Bug Minor Open Unresolved WC Triage John Hammond Tue, 1 Dec 2020 18:49:13 +0000 Tue, 1 Dec 2020 18:49:13 +0000 0 2 Development Rank 1|i01g3z: Rank (Obsolete) 9223372036854775807 Severity