From: Somnath Roy <somnath.roy@sandisk.com>
Date: Sat, 10 Sep 2016 20:28:32 +0000 (-0400)
Subject: Logging proper message during read error from disk
X-Git-Tag: v11.0.1~235^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F11042%2Fhead;p=ceph.git

Logging proper message during read error from disk

Signed-off-by: Somnath Roy <somnath.roy@sandisk.com>
---

diff --git a/src/os/bluestore/KernelDevice.cc b/src/os/bluestore/KernelDevice.cc
index 2f3811ed58f..7c6a6eac186 100644
--- a/src/os/bluestore/KernelDevice.cc
+++ b/src/os/bluestore/KernelDevice.cc
@@ -509,6 +509,8 @@ int KernelDevice::direct_read_unaligned(uint64_t off, uint64_t len, char *buf)
   r = ::pread(fd_direct, p.c_str(), aligned_len, aligned_off);
   if (r < 0) {
     r = -errno;
+    derr << __func__ << " 0x" << std::hex << off << "~" << len << std::dec 
+      << " error: " << cpp_strerror(r) << dendl;
     goto out;
   }
   assert((uint64_t)r == aligned_len);
@@ -548,6 +550,8 @@ int KernelDevice::read_random(uint64_t off, uint64_t len, char *buf,
       r = ::pread(fd_buffered, t, left, off);
       if (r < 0) {
 	r = -errno;
+        derr << __func__ << " 0x" << std::hex << off << "~" << left 
+          << std::dec << " error: " << cpp_strerror(r) << dendl;
 	goto out;
       }
       off += r;
@@ -559,6 +563,9 @@ int KernelDevice::read_random(uint64_t off, uint64_t len, char *buf,
     r = ::pread(fd_direct, buf, len, off);
     if (r < 0) {
       r = -errno;
+      derr << __func__ << " direct_aligned_read" << " 0x" << std::hex 
+        << off << "~" << left << std::dec << " error: " << cpp_strerror(r) 
+        << dendl;
       goto out;
     }
     assert((uint64_t)r == len);